Protractor Reviews
Published by Tue Nguyen Minh on 2025-11-14🏷️ About: Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians.
🏷️ About: Protractor helps you to measure angles quickly and easily. This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians.
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Genuinely disappointing. I have never seen an app go through so many measures to force you to buy the upgraded version, even apps that don’t offer a free version do less to convince you to pay them. It’s defaulted in radians and if you try to use degrees it will prompt you to buy premium. Just about every feature is a premium feature, meaning unless you’re forking over the money for premium it’s just a radian this app. Even just trying to use the radian this app will periodically prompt you every set amount of seconds spent moving the measuring slider about not owning premium and lock you out of touching anything in Protractor for 12 seconds. It’s not even an ad, it’s just telling you to buy premium. I think I’d be less annoyed by incessant ads, banners, etc than by someone’s intently programmed measures to inconvenience anyone using the free version without any intent of at least gaining money by showing ad slots or anything of the sort.
I was immediately hit with advertisements and screen changes to take me to other apps to buy. Before I could even measure anything the timer ran out and then I had to wait eight seconds or whatever it is in order to try and time it. Then when I did measure something it would only do it in radians and not degrees. So all in all it was totally useless experience. What a shame, if I had been able to see if I could actually use this to measure something accurately I probably would’ve purchased it. But the initial impression has now made me delete Protractor.
Throws up an alert every 10 seconds asking you to buy the full version, and if you don’t want to, you have to wait 10 seconds before you can dismiss the alert. Took me a couple minutes just to take a single measurement. Do not download unless you intend to buy the full version. I didn’t buy it, so I can’t say whether the full version is good or bad. Protractor needs be an up front payment instead of an in app purchase.
I downloaded the this app and stud finder. They gives a few seconds at a time to use it before it prompts you to wait a bit or upgrade to the paid version. I might actually pay for it if I could actually try it but both apps were completely useless to try. In the free version, the this app couldn’t be changed from radians to degrees. A set of 12 apps was “on sale” for only $2 but if you can’t at least make it somewhat useable in the demo, no thanks.
The very first thing Protractor did, on first launch, was ask me to rate it! Then it took me to the upgrade screen. Protractor is worse than a static picture of a this app. At least that would show degrees instead of radians and wouldn’t interrupt constantly with an upgrade prompt and a 10 second timeout. I fully support paid apps but how about showing ads in the free version instead? The camera feature (promoted in Protractor Store listing!) might make this better than a picture but I’m not going to bother at this point.
You literally can do nothing with the free app portion of Protractor. Ridiculous!! Free app measures only in radians, Not degrees. You have 10 seconds to try and measure what you can before you get a message again you’ll have to upgrade to go further. What is wrong with this company? Sure if you have no problem spending a buck I’m sure it’s great. It’s the principal of the matter of offering a free portion. Just offer the paid version and then there’s no expectation of getting anything for free. Wow, guys, get it together!!
I don’t expect a free lunch or a free this app app. But a free trial is not too much to ask. Protractor’s idea of a free trial is 7 seconds. That’s how much time you get before being prompted to upgrade. It’s not enough time to figure out how to switch to deg from rad, let alone familiarize yourself with using Protractor . Developers deserve to make money, but I doubt you’ll get much money out of this without giving the user at least a few minutes to try it out. I just deleted it. Good luck.
So I downloaded the free version- after the immediate pop-ups asking you to upgrade I tried to set the this app to degrees. Sorry that’s only available in the paid version. Then, as I was reading that I was informed that I had run out of time and had to wait ten seconds before I could use Protractor because only upgraded users can use Protractor without interruption. What a joke. The worst “utility” app I’ve ever downloaded. Just charge a dollar. Don’t try and trick people into paying for something.
As mentioned in ither reviews, it is pointless without paying the extra dollar.
While the idea is great, even when you pay the dollar, the implementation is questionable.
I took several pics to make sure I get the right details, however every time I open the pic, it’s just the this app on top of what I am taking the photo of - not how I had placed it when taking the pic.
So far this has been nearly useless.
Granted, I can get the angle before I take the pic, but then you are trying to hold still and read it at the same time.
I have never come across an app like this before! Not in a good way! I tapped one thing and it popped up with an upgrade… that I didn’t want. Then automatically selected the upgrade for me. Then only gave two options to continue with a purchase that I did NOT want with a 10 second timer countdown! I deleted Protractor from my phone as fast as I could but have no idea if it’s going to charge me or even how MUCH it will be!!! Ughh!! Don’t download this!
If you want to pay money this may be a good tool, but I could not even test it due to all the ads for their other apps. Want to see degrees instead of radians? Great, pay to upgrade or wait 13 seconds until this option disappears then make sure you don’t press it again. Not sure what this vague button does? Go ahead and press it, probably an ad. Wait you’ve already been using Protractor for 30 seconds, even though over half that was ads? Well your time is expired and now you need to wait 15 seconds before you can use Protractor again, unless of course you upgrade!
I might’ve paid for it if the demo worked ok, but I deleted it in under a minute because the free version is useless without any features and the way the developers push you to buy features constantly makes me doubt if the features actually work.
Please don’t get Protractor. It has a time limit so you can only use it for like 10 seconds at a time. Then you have to wait 6 seconds to use it again. It asks you to pay for an upgrade in order to not have this time limit. You also have to upgrade for the camera feature, so it’s not included. It’s rather disappointing with the free version, but if you’re willing to pay I guess it wouldn’t be that bad. I’m willing to guess that, when you do pay, the camera will be really inaccurate and hard to work.
Apparently an image of a this app with a straight line you can rotate is too complicated to actually be free (from this “developer”.) After I downloaded Protractor I realized the camera feature was premium, but I thought, “oh well, I can make it work.” But every 10 seconds or so it also tells you that you’ve exceeded the allowed time and it makes you wait out a timer or upgrade to proceed. Plus, you can only use radians; measuring degrees is apparently also a premium feature. Too much trouble for something that should really be very basic and easy.
This is just a this app, you must upgrade for other features. BUT even the this app “times out” after a few seconds then you must wait 10 seconds before it resets and you can use it again. It is basically forcing you to upgrade to make it usable. I was going to buy the full version until I played with the this app and saw they designed Protractor to force in-app purchases, thus rendering the free tool useless. It’s a shady gimmick in my opinion and I’m uninstalling now. They just lost a customer since I was willing to buy the upgrade for the other cool tools they supposedly offer.
I quickly needed a this app to measure an angle, so I retreated to Protractor Store for a useful measuring tool. What I was not expecting upon downloading Protractor was a simple picture of a this app, annoyingly and constantly interrupted by beckons to purchase the upgraded version of Protractor , and a pop-up every 10 seconds that my time was up for using Protractor , and I’d have to wait another 20 seconds to use the picture of the this app. Do not waste your time downloading Protractor, and instead pull up a picture of a this app from Google. It will be better quality, and you wont be constantly interrupted.
Each time you try to use it you get 10 seconds of use (not even enough time to set the thin down) then your asked to upgrade and you can’t use it for 10 seconds and then after the time elapses you can press continue and try again and you get 10 seconds then the upgrade request over and over. The free version is useless unless you have super spreed in setting to down and measuring quickly. You can just hold it in place either because it forever you to upgrade or basically decline in order to proceed. The free version is just a commercial nothing more.
I have never written a review, but I just had to tell people to avoid Protractor. It is completely unusable unless you pay for the upgrade. Popup blocks the this app every ~10 seconds just to make you purchase the upgraded version. On top of that you aren’t even able to switch to degree mode without the purchase. I understand making the camera portion of this only accessible with purchase. But the free version is unusable. every 10 seconds I have to wait on a 10 second timer to even use the this app. Absolutely awful and shows the greed from the makers to force you into buying their product. If I could give a zero star rating I would. Do not download Protractor!!
All I wanted was to be able to measure angles on my phone. When I first opened Protractor it showed a bunch of neat products, but I really just wanted to be able to measure a few angles real quick. It finally let me skip past the upgrade option and took me where I wanted to be. Then when I finally got to the measuring device, everything was in radians and it would not let me switch to degrees without paying. So am I to believe I have to pay a dollar to unlock every single option in Protractor? Seems ridiculous. And while I was messing with it while Protractor was measuring in radians, nothing ever moved anyways. So I couldn’t tell that it was working at all. I spent a total of about 1 minute on here, so I could have missed something. But overall was disappointed enough to spend five minutes writing this review.
I recently downloaded Protractor because I didn’t have a spare this app on me. However, this isn’t really useful unless you purchase the camera feature for $0.99. I have it, and it works good, but it would definitely get a higher review if this feature was for free, as this seems like it could definitely be more useful for people who don’t want to spend money on an app when they don’t have a this app handy. Overall it’s fine, but if it was all for free Protractor would get a five star.
This is a ver useful app. But the fact that it must be downloaded every time before it can be used suggests it is no longer supported. Is this tge case.
Protractor+ does not appear safe based on available data.
JustUseApp Safety Score for Protractor is 0/100.
This assessment is based on our NLP analysis of 10,368 user reviews.
Combined with the app store average rating of 4.1/5.
Protractor+ does not appear legitimate based on our analysis.
Our NLP models processed user feedback to estimate legitimacy. JustUseApp Legitimacy Score for Protractor is 0/100 .
This conclusion is based on analysis of 10,368 user reviews.
Protractor collected the following data from you:
**Pricing data is based on average subscription prices reported by Justuseapp.com users..
| Pricing Plans | Amount (USD) |
|---|---|
| Pro Features | $0.99 |
This app turn your iPhone into a handy pocket protractor that can measure angles in both degrees and radians.
Protractor helps you to measure angles quickly and easily.