SleepWatch - Top Sleep Tracker Reviews

by Gilruin

Claims to "value your privacy" and then buried about ten pages into the privacy policy, reveals "Cookies and similar technologies help us to recall things about you [...] to enable our partners to serve ads for products and services". The attempt to hide this by burying it pages and pages down did not impress me. Granted, this portion is for the website and may only be referring to using Google Analytics, but if they are so committed to privacy they should find another analytics solution that doesn't potentially give users' private medical information to Google. SleepWatch itself also says it "may" use IP address as a proxy for location even if you deny SleepWatch access to your location data, which is not something a company truly committed to privacy should be doing, ever.

And an unrelated issue for trans people, SleepWatch requires you to input your biological sex (fine in itself, it's potentially medically relevant) but then gives no option for people on HRT to indicate so despite testosterone level being more important than birth sex for heart measurements, and then continues to list the user as their biological sex on their profile. The word choice of "biological sex" on the signup screen also seems to imply the devs are fully aware transgender people exist but feel they should be referred to and medically treated as their birth sex.

by 02272019

I doesn’t keep good records of a nap. After I’m awake for two hours and I take a short nap for 45 minutes. It shows asleep disruption in my sleep pattern which is totally stupid. I will be watching it for the next couple weeks if they don’t fix it I will be switching apps. I used to use Fitbit and it worked fine with naps even after being awake for a half an hour if you lay back down and took a nap it showed a nap not a sleep disruption. You would think with the programmers they would be able to figure this out when writing software but apparently not. Fitbit must be the only one that can figure it out or maybe just this companies too lazy.
I just looked and there’s several apps in SleepWatch Store that do a better job tracking your naps and your sleep time. For the fee they charge you would think they would care more. The response I got is we will look in to it. Really look into it!!

So I will be canceling my subscription for anybody for future reference I would refer you to a different app if you do naps in the middle of the day. This one is worthless!!

by Annydarling

Update: After trying so many time to get SleepWatch to show the reports on my watch it finally worked. I had to make sure I download the UPDATED version and that it’s the one for the watch NOT the phone. (When you search in the Apple store for SleepWatch , next to it should say Apple Watch) So I reinstalled it again, it started working. Still keeping at 3 stars due to me being patient enough to keep trying to get it to work on my own.

I like SleepWatch it. I have tried a few and this seems to be the most accurate one that tracks my sleep with me wearing my watch to bed. My only issues with SleepWatch this is that I can’t see my reports on my Apple Watch (series 5), hence the only 3 stars. It still say “Setup Required. Complete setup on iPhone to continue.” I even uninstalled and reinstalled every way possible and restart my phone and watch still nothing. I even gave it two days before writing this review just so it can show up on my watch. I have tried everything that they recommended on the website for it to work but nothing. I even try clicking on the “feedback and support” in setting and it said that I don’t have an account, which is weird because I do and I’m logged into it. So I’m out of options. Please, please fix issues so I can fully get the best experience and report with SleepWatch. Thank you.

by SandeeF

Like so many businesses / products / services today, we are often asked for our feedback. Human nature is to be helpful; we obligingly fill out surveys or answer a few brief questions. To what end? I’m giving my time and opinion for their benefit. I don’t mind doing this occasionally — on my terms.
DAILY alerts to “tell us more about yourself” besides the “how rested do you feel today?” All while, I do not see a reward of my participation in these queries for the data crunchers and bean counters. Of course (I assume), if I pay for the extra features, I might gain some insight from my routine do-gooder helpful and honest responses.
Please add a setting / option to opt out of the survey pool.
On to a fresh complaint: the sleep detection is losing accuracy, reporting far less sleep than I actually get. Nearly every day for this week, I’ve needed to manually set my sleep times. What gives?
One more thing, if I fail to charge my watch or just plain forget to wear it for one night, then comparison data returns “ not enough info, please wear your watch at night” when there is clearly 783+ days of info on me with only random single night gaps” surely a trend greater than 3 days would yield a far more accurate picture off sleep health. Can you compensate for the occasional fall from grace wherein the user bares all (wrists) in the boudoir?

by ETpnnnnnnoPPwwjsnja

SleepWatch you have to pay and that’s ok , and you have to wait 7 days to see the results and I don’t get how it can know what’s wrong. I’m 11, I’ve been waking up in the middle of the night no idea why my therapist says she think it’s because of my anxietu it may be that she said but it never started and she said it could mean you have to use the bathroom and I do but I never use to wake up so I’m trying to find why and my mom doesn’t think I can go to a sleep test in person because that’s for adults and not for kids. And with covid it’s probably not open I would have to wear a mask when I sleep. So I don’t know what to do I do take sleep gummies to help me fall asleep but I don’t think that’s the case and it does make me tired becaus sometimes I can’t fall bavk asleep I was up for 3 hours. And I wake up different times it depends. So please help thanks. SleepWatch is not really helping me and I know people say it’s good but please give me a overall of SleepWatch because I don’t understand it I’m trying to find ways to help me. And it’s very hard during a pandemic but I apprieavge you making this up but I just need a understanding.

Thanks

by Hdufid

I’ll start with the fact that I love SleepWatch. It has really helped me better understand my sleep and how it affects my overall health. But SleepWatch seems to track every period of low activity as sleep. For a few months I wasn’t using it because I didn’t like wearing my watch at night. When I recently started again I found that it had inputted whole weeks worth of incorrect “sleep” data from when I wore my watch during the day that was either naps, or times when I was reading, watching movies, sitting in a car for long periods of time, or just relaxing in any way. You can’t edit data that’s more than a week old, so I can’t delete these days and all this bad info is factored into my “average” scores. Now I have to check the previous night’s data after every day to make sure it didn’t count some relaxed period as sleep and throw everything off. SleepWatch is really good in a lot of ways, but it’s not for passive use.

by ClanChest

I tried it last night for the first time. Make sure you give it full permission to access your health setting for it to work with your watch. I couldn’t figure out this morning why it didn’t work but then I realized I hadn’t done that. It seemed to work okay. I woke up when my husband went to work though and it didn’t register that at all so it makes me wonder how well it is calculating. I woke up and spoke with him and SleepWatch said I was in restful sleep at the time. That’s a bit odd. But overall it does work well. I was disappointed Apple watches didn’t track sleep like my old Fitbit for SleepWatch is good for those who had that same issue and want a sleep tracking app.
Reason for four stars is what an outrageous price for premium! Just make it a one time paid purchase but 30+ dollars a year. Mine currently says it costs 30 but says that’s a limited time year. All for a couple extra features like your watch waking you up when you’re not in a restful sleep. Waste of money, it for sure shouldn’t be subscription based. Just charge like 10 bucks once and more people would probably do it.
Overall it’s good though, going to keep trying it out. Maybe it will become more accurate with additional data.

by Sarah_mariiee_

I absolutely love SleepWatch. It’s very very efficient at what it does. I track my sleep automatically through my apple watch on the free version. This works amazing and I haven’t been disappointed yet. The only thing I wish SleepWatch had was the ability to sync with apple health. I also wish it had a smart alarm that could wake you up with a window of time based on how deep of sleep you are in. Other apps have this feature but require you to have your phone listening. This seems inaccurate to me and apple watch data would be the best way to collect this information for accuracy. There aren’t many sleep apps that use the apple watch and this alarm could be a big boost for you. I also wish it showed your REM sleep. I realize it shows your deep sleep but there is a difference between light, deep, and REM. Because REM is what matters most it is the most important thing to know but SleepWatch doesn’t show it. Overall I really like the SleepWatch but these were just my few suggestions that could make me love it.

by Frank J Policastri

I have had severe obstructive sleep apnea for over 30+ years now and always had to use a machine. It was always very difficult for me because my job required me to travel most of the time. Within the last five years I had some major dental work done including 13 implants. The doctor told me that after the implants settled in I might want to try some mouthpieces. About two years later I figured that I would try them. My Dentist did not make them and I had to be referred out. My only reluctance was to see if they really worked I would have to be referred to a sleep lab. That is when I decided to get SleepWatch.. Not only is it easy to read but I am able to get everything the sleep lab would offer in the comfort of my own home. It showed that the mouthpiece was just as effective as the machine. I am now able to measure my sleep every night and walk around with the device I am currently using in my pocket.

by Terminator XIV

At first I was like “this won’t work” but after using it for a few months I found SleepWatch very useful as well as helpful. SleepWatch will basically gather your sleep information, over time, and set up a plan based on your sleep patterns. I am pleased with how accurate SleepWatch is at taking information and setting a plan you can follow to help you improve sleep. An example, for me, is that if I burn 350 active calories a day my heart rate dip is greater. So my daily goal is to reach that 350 mark because it does drop my heart rate. Also, SleepWatch continually updates so it just keeps getting better and better! My suggestion is simply to download SleepWatch if you want a great study of your individual sleep pattern and want a better nights rest! You will look forward every morning to see how well you slept. You have nothing to lose, SleepWatch is free, and a good nights sleep to gain!

by New To True Crime In Virginia

The reveals are fun for a month. Then one starts feeling evaluated. You begin to feel tested, scrutinized, judged. And finally, chastised for partaking in happy hours with neighbors, glad you escaped another week not catching what could be a fatal virus—chastised for celebrating a victory with wine with your meal in good company. But mostly chastised for not living like the regimented monk lifestyle that retires at 9 pm and awakes 6 am every day who rigorously exercises. One has to be okay feeling these psychological pressures. It's like being tested while sleeping while wearing a relentless non-compassionate machine that allows no leeway for life's unexpected calls of nature because you drink the appropriate amount of water a day. You awaken and worry you're not drifting off fast enough, so what will this do to your score!? And, people behind the scenes know it all. In that case, this is SleepWatch for you. Because it never fails to deliver judgment all the time.

by IPhone/iPad Integrator

I’ve been using SleepWatch for years. I like to occasionally look at my tearfulness patterns and HR drip patterns. Most of all, I like how it works to get the information it needs without you haven’t to remember to do anything. Auto start/stop sleep cycles (with easy corrections if you were crazy in the middle of the night), a couple prompts during the day to see if you are STILL feeling rested. They will even ask questions (multiple choice) as to why one day might have been bad and give you reminders to not do something. But garbage in/garbage out as with anything. Watch app is super easy to use and quickly start a sleep cycle (if you want to get a more accurate time of how quickly you fall asleep) and the “wake me up in this range of time” is nice because I guess I’m woken when I’m at my stirring point and not after I’ve mentally committed to being a SLOTH ;)
Enjoy!

by Thereal_jsamuel

When I originally used SleepWatch it would work properly between my Apple Watch and iPhone. It would track my sleep accurately when I wore my Apple Watch to sleep, the data would display in my iPhone app. Lately though I have been finding that when I wear my watch to sleep it appears to track my sleep. But when I go to check the data on my iPhone app it is not always displayed. So it has often now said no data tracked. But how when I have been wearing my Apple Watch to sleep daily? I am not impressed and will be looking to use another sleep tracking app. This is disappointing because I have been using thissleep tracking for a while and thought of it to be accurate and reliable. I hope that some attention will be made into making sure SleepWatch works properly at transferring data from Apple Watch.

by ClayPress

I wouldn’t say I did an exhaustive trial of all the available sleep trackers out there when I decided this app was for me but I certainly tried a few and none came close to matching the elegant simplicity of the data and insights that SleepWatch offers. I don’t feel any need to look for or try any other sleep trackers because this app does everything I need better than I hoped for.

Thanks to the insights this app has provided about my sleeping habits and how rested I report feeling over time, I am consistently sleeping much better and feeling more rested than ever before. The only problem I have is remembering to take my watch off early enough in the evenings and in the mornings to charge it enough to last me all day and night, but that’s a user/hardware issue, not any fault of this app.

I love SleepWatch so much that I tell everyone I know with an Apple Watch to download it and can honestly say most of the people I’ve shown it to have been impressed enough to download and start using it themselves!

by Me1yssa

I love the accuracy of SleepWatch. It’s very simple to read all the information that it takes during my sleep. I’m a stay at home mom and I’m always the last one in bed and the first one up. I bought SleepWatch because I knew I wasn’t sleeping enough and it was affecting my health. My doctor recommended I track my sleep so I gave this a try. I like that it showed when I went to bed and how much sleep I actually got while in bed. The longer I used SleepWatch the more it learned my patterns. I also like that it knows when I’ve had a really bad night of sleep and I receive the questionnaire asking why I did so bad sleeping. For example last week my son was extremely sick running a fever of 103.7 all night so I was up all night checking on him and changing out ice packs to help keep him comfortable until I could get him to the doctor the next morning. My app detected a total of 1 and half hours of sleep. I was able to tell SleepWatch I was “disrupted by a sick child”. Thanks for creating SleepWatch and continuing to make it that much better! 😊

by Arizona Cactus Cowboy

It’s a nice app when SleepWatch ’s servers are not down. When the servers are down, like today again, it tells you that “you don’t seem to have an internet connection” and you can keep trying for a long time, if you want to waste time doing nothing. But there is a “plan B” backup for when that all too frequently happens: look at the paper notebook you keep by the bed for the purpose of jotting down each time you enter or leave bed during the night and tally up the total times you slept during each time in bed. SleepWatch requires you to confirm sleep times each day for the sake of accuracy so I’ve found that such a sleep log notebook is far better than trying to rely on my memory for which times I was actually in bed, sleeping and which times I was sitting in a chair reading, with my Apple Watch wearing left arm motionless for long stretches of time. At first, I rated SleepWatch 5 stars. But now, because of its frequent “you don’t seem to have an internet connection” silly statements I’ve reduced it to 3 stars.

by DevoBillado

I’ve loyally used SleepWatch for several years now and these guys are awesome. I know what developers have to deal with when Apple updates things and I am certain that the recent bugs from Apple’s update are a real challenge to circumvent.

I might need to temporarily delete SleepWatch and check back later, but this does not warrant a “one star” review — these guys have been consistently too good for that. I guess I’ll check back later, you don’t have to give them low ratings to hold them accountable. Trust me, they’ll get it fixed, and it’s not their fault — Apple tends to really throw developers under the bus when they redesign iOS and also want to push their own app of the same function.

Their stats are way better and far more thorough than the sleep app Apple just introduced, and Apple doesn’t allow you to compare your stats to other users. SleepWatch is just too good to fail. I wish the developers great luck with overcoming this problem, and I’ll definitely check in later.

by WhyBeNormal64

It is rare for me to give a 5 star rating as there is almost always room for improvement. Having said that, I’m so impressed with the accuracy and data SleepWatch provides that I also bought an annual membership. I couldn’t care less where/how I rate with other users, but do care that people who have done a good job at something get rewarded.

I use SleepWatch a bit off script in that I’m not using it to learn how to improve my sleep, but to learn about how my sleep patterns affect my chronic pain. For example, just in the last month I’ve proved a theory that I’m much more rested, awake in less pain, and maintain deep sleep longer when I don’t sleep more than 2-3 hours at a time. When the pain would awaken me I’d stay in bed and try to sleep more. Now I know I’m much better off if I get up for a couple few hours and go back to bed for more deep sleep.

Support folk have been very patient with me in my attempts to get SleepWatch to work for my abnormal needs (although I think I may have made them a bit defensive) so kudos to them! My fingers are crossed that they may implement an enhancement request I recently made. Regardless, I’ll continue to use SleepWatch and tell my friends.

by DeanH.

I really like the sleep app, and it’s really help me improve my sleeping patterns by building awareness. I have no issues with would it does or how it works, but I do have one suggestion: it seems that it takes a while to generate the report, and one additional thing I would like is an instant reference in the morning, right on my watch, as to how many hours of sleep I got, rather than having to wait a while to get the report generated after I get up. The reason I want that is that I have a relatively dynamic lifestyle, and I work with clients in different parts of the country in different time zones, so sometimes, I have the option to sleep in a little longer and just want to know right then and there “how many hours of sleep did I get.“ when I scroll over to the sleep app on myApple Watch, it can’t give me that instantly, but instant access to how many hours I’ve slept would let me know whether it would be a good idea to sleep an extra hour on the days that I can. But by the time I go through the effort that it takes to generate the report, I’m wide awake. Usually SleepWatch presents the information at around noon.

by 초보둥둥이

I’ve had sleep challenges for awhile at my age and have experimented with several apps and devices to try to figure out to maximize the sleep my body will allow. I am really thankful for SleepWatch. The subscription is not cheap, but I think it is worth it. Between the apps I’ve tried, this is by far the best one, easiest to use, and the metrics it gives has really helped me learn things and prove the things that help me sleep better. Things like: how to tweak my exercise cycle (morning HIIT every 2-3 days + walking in the evenings) and eating (Intermittent Fasting 2x/week) and (Few carbs early in the day, but more carbs at dinner). Etc. The results are all numerical and I see them when I check SleepWatch each morning.

You might be different for what you need to do for your season in life and for your body, but I think everybody will feel tremendously better getting enough quality rest and sleep at night. Wishing everyone the best in their journey too….

by Aspen Tree

I am super bummed about my rating and SleepWatch. I bought SleepWatch after reading the reviews. While I understand that nothing will be full proof and 100% accurate with recording my sleep by just wearing a watch. However, I’d be more accurate knowing my sleep if I just looked at a clock before I went to bed and when I woke up. I could manually calculate my actual sleep. Here is the background. I have a newborn, so I wanted to see how much sleep I was actually getting. Figured the reviews were good enough, SleepWatch wasn’t expensive...it is worth a shot. Well, it was recording 7+ hours of sleep a night. Anyone that has ever had a baby knows you don’t get 7 hours of sleep in the first few weeks. So, I realized it was wrong. Twice in the last two weeks I haven’t even worn my watch at night and the next morning it told me I got 7 hours of sleep one night and 3.5 hours another. When I opened SleepWatch , it showed time of restful sleeping and not. I am guessing my watching charger got a good nights rest one night and not another. Clearly, SleepWatch doesn’t work correctly. Save your money folks.

by Beachlove1

I never write or submit reviews, but SleepWatch doesn’t work. I got SleepWatch to give me an idea of actual deep rem sleep, and restlessness, but it gives me inaccurate readings. I know for a fact the time I go to bed and when I start falling asleep as I have a bi-pap machine and put on the mask. That gives accurate sleep time and breathing issues, until I take the mask off when I awake. SleepWatch keeps telling me I’m still sleeping when I’m not...example; when I actually might have slept 3 hours, it says I slept 7 hours. I don’t know if it’s counting the time I may be sitting down drinking coffee or reading a book in the morning. One day I wasn’t feeling well, and was not as active as normal, watch tv, read, was on the computer, and when I checked SleepWatch , it said I had slept 14 hours. Not good! No help in calculating or deciphering if you are resting or sleeping. I gave it a two, because it provides the heart beat, rhythm, etc. I just hope that’s correct.

by PapaGasket

I love using SleepWatch to track my sleep. It has given me some very useful insights to help me sleep better.

What I don’t love is the notifications it sends me. For example:

Every morning when I wake up, I open SleepWatch , log how well rested I feel, and then review its metrics for the night (sleeping heart rate dip, etc.). That’s the only interaction with SleepWatch I need. But five or ten minutes later, it pings me with my daily sleep report. But I already know what it’s going to say, because I just looked at it!

Then there’s the recommendations SleepWatch sends me for improving my sleep. They were very useful at first: I sleep better on days when I exercise. I’d feel more rested if I got 8 hours and 15 minutes of sleep every night. Great. But it just keeps giving me those same recommendations over and over again. I don’t need to see them anymore.

And then there are the ongoing inquiries as to why I slept particularly well or poorly the night before. My answers are usually always the same: I exercised the day before. Or I didn’t exercise. SleepWatch has already identified this connection between sleep and exercise for me. And it reads my workout data, so it knows how much I exercise. So there’s really no need to keep asking!

I know. I can turn off notifications. And I probably will. But SleepWatch would be much better (IMO) if these issues were addressed.

by Douglas Meyer

I have been using Sleep Watch for several months now and have been able to find tune my sleep. What I like best about fine-tuning or tweaking my sleep is that I can get more of a deeper and relaxed sleep in a shorter amount of time. This is important in today’s society, given that we do not devote 8 to 9 hours as required. On weekends when I work, I am only afforded the opportunity to be in bed for approximately six hours, so getting the greatest quality of sleep in that amount of time is vital. By measuring my quality of sleep using an Apple Watch, and SleepWatch, I have been able to make small adjustments based on scientific recommendations that have improved my restful sleep greatly. As A health and wellness clinician/counselor, I recommend SleepWatch to my clients in order to help them make sleep adjustments.

by EkoExplosion51213

Honestly, I nearly had a panic attack when SleepWatch couldn’t open a few months ago. I had to venture through SleepWatch Store and find a replacement. I tried to find something that gave me the satisfaction of SleepWatch, but they all came short. When Sleep Watch finally fixed the bug, I was so happy! I love how I can check my sleep with just my Apple Watch as long as it’s connected to the Internet. Other tracking apps wouldn’t allow that. I also like the insights, graphics and overall detail of each report. No sleep tracking app has all that and if they do it’s unappealing. I look forward to sleeping well just to get a report now! I highly recommend this to anyone wondering about their sleep cycle.

by Moonbot

Sleep watch has improved to the place I want it to be. I get all the information I wanted that I got from other non Apple apps in here. The one feature lacking that they fixed was estimation of actual time slept. A while back, about 6 months ago, their app couldn't accurately track my sleep time. If I woke up at 6:00 am then went to bed at 6:30 to 8:00 again, SleepWatch missed it. TODAY it captures that to give a very accurate assessment of ALL my sleep. Yeaaa!

Also they are updating and adding more features that I didn't have in the non Apple apps.

Hats off to Sleep Watch! Today it is a great app and I recommend it if you want to improve your sleep habits or just find out how really crappy your sleep really is.

by DerickL

I’ve probably tested 5 of the top sleep tracking apps available. This is by far my favorite for a few reasons. I find it to be the easiest to use, while also offering the most features. All I need to do is wear my Apple Watch to bed. SleepWatch automatically senses when I’m in bed and starts tracking sleep and heart rate. I don’t know how it calculates and figures everything out, but it is always shockingly accurate. Highly recommended free and paid versions.

I tried other sleep apps and was unimpressed with the limited, pseudo-sciencey data tracking abilities, such as SleepWatch that claims to gauge your sleep quality using only your phone’s internal microphone located 2-3 away on the nightstand. This is silly and obviously inaccurate.

SleepWatch analyzes data from Apple Watch to record body movement, heart rate, physical movement (ie. walking around vs relaxing in on the couch vs lying in bed) to determine what time the user starts trying to fall asleep, when they lose consciousness, and how deep their sleep is every night.

I don’t bother with so-called “smart alarms” that claim to wake you up at the most optimal time within a 30-60 minute time window. I want to sleep as long as possible each morning. There’s no way I’m getting out of bed 40 minutes earlier just because some app *claims* I’ll be at optimal in my routine

by B330uch

I downloaded SleepWatch originally, not expecting much out of it but , I actually was surprised about how much it tells you and helps you sleep. All you do is wear your watch when you sleep. At first I thought this would be a problem due to battery but my series 3 battery will usually last 2 days and 1 night without a charge but I found out that if you just put your watch on the charger when you’re getting ready it usually brings it up to a full charge in the 30 min it takes to get ready. But SleepWatch tells you best things light when you were in a light sleep and when you were in a deeper sleep. Also let’s you know around what time you should be going to bed to get a deeper sleep based on your body’s sleep history.

by DaleDe

Before I got my apple watch I owned a pebble watch that had a night mode that I liked. I am happy to report this one is even better. It provides all sorts of useful information. It does need an Internet connection to work. My biggest problem is insuring my battery will last. Before using SleepWatch I just charged over night but now I can't do that. My solution is to keep the charger near my chair when watching TV and top off the watch while I don't need it. The watch needs 2 hours to charge completely but I notice the state of the charge and can usually top it off with no problem and still keep the exercise data ok.

You do need to verify the times each day and sometimes I have to edit them a bit but overall it works ok.

by Qwerty846294

SleepWatch works well, never fails, never crashes. It asks follow up questions in a non-obtrusive way if there are extremes in sleep (poor sleep quality, broken nights of sleep, etc). It is accurate in detecting when I go to sleep and wake up. I believe the stats are spot on - for example if I have a couple of glasses of wine before bed, it accurately captures this in my average sleeping bpm - which, if you don’t know, is always lower (and healthier) if you don’t drink right before bed. It categories sleeping bpm into ranges based on the dip - not ideal, normal, ideal. Sleeping rate bpm is correlated to cardiovascular health. I had a cardiac ablation last year from tachycardia so I carefully monitor my bpm both awake and sleeping.

This is one of the single most useful apps I have installed in my phone and watch - and I have a LOT of apps!

by JaredR94

SleepWatch is very well done. The data is laid out in an easy to navigate way and the visualizations are perfect. It used the restedness questionnaire to recommend I get an extra 30 minutes of sleep a night which was really helpful.

My one qualm is that I can’t delete old data. When I got SleepWatch , it used data from the previous one or two weeks, but I didn’t wear my watch to bed during that time so the data it used is extremely inaccurate. By the time I tried to delete the data, it wouldn’t let me, and customer support confirmed that there’s currently no way to delete data over two weeks old.

Great app, but delete the old, bad data as soon as you install it.