Calculate84 Reviews

by The Hobbit Eman

so overall this is a pretty good graphing calculator emulator for your phone. I like how it vibrates when you hit buttons on it to let you know that you actually hit the button. so far the answers it gives all seem to be correct also. unfortunately, it is missing a lot of important things. It can do linear regressions, but no other types of regressions. I assume the developer is working on adding those but they should really be near the top of the list. they are part of basic pre-calc so they should be added asap. I will say that as of right now it is definitely the best one available for free because the other ones lock literally everything behind paywalls but still let you download it for free which just seems like a scummy way of boosting downloads. if you add in regressions, i’ll bring my rating up, but it wont be 5 stars until all commands are available.

by Agzhcmgjdhnsb

I got Calculate84 because I won’t have access to my calculator for a couple days, and I needed to do some standard deviation stuff for school.... turns out the functions I needed were not there :(

That being said, I played around with it, and this is an amazing calculator alternative!! The pinch-and-zoom on the graphs is very nice. I’m leaving this review in the hopes that the devs add stuff like the Distribution

by Mo Ichael

It’s just like the TI-84. It’s made quite well. However, the only complaints I have are:
-there is not back space key
-when I try to graph parabolas and quadratic related equations, I can tap the screen to find the points, but I can’t find the exact points that intersect the x and y axis. I wish something would indicate when my finger is touching the exact points on x and y axes.

by Eaurius

I am amazed, continuously, at what developers can do these days. I forgot my TI-84 at home when I had every intention of grinding through some stats homework at school (I’m in college and taking a few online classes).
Obviously, it is no substitute on the exams, but when I figured out I could do combinations and permutations and summations, I was so happy!!!
No more switching calculators between backpacks, I’ve found my solution. Keep working on the apps function and the developers will make money off of this. There is even a copy function if you click the equation (highlights pink) and you click enter, just like normal. I look forward to testing the limits of this calculator and seeing what changes can be made. Good luck!

by Math Teacher 0521

I am a mathematics educator and believe this is a great resource for my classes. However, when teaching my students about sequences and series, parametric function, polar functions, this calculator does not allow the ”mode” to switch. It says it's in the specified mode but doesn't switch.

However, this is still an excellent resource for students who need it for other concepts in mathematics.

by Liebniz3_14

I am a high school math teacher. I was always looking for a good ti84 iOS app to recommend for my students and this is definitely it. Originally it came with the caveat that they couldn’t use it when we got to regressions. But thanks to recent updates, I’m not sure there is anything I cover that my students cannot do with this. Huge thanks to the developers!

by Jkha4

I never write reviews on apps, but Calculate84 has truly surprised me. As an engineering major, a lot of my work is done with graphing and I always forget my calculator. It allows me to do just about everything my 84 plus can do, minus the programs feature, which is okay. Overall Calculate84 is a great app and one of the biggest time savers I have yet to come by.

by WTR50

I love the TI environment. I that is what you are after but on your phone instead this is a great app to have. Calculate84 itself is not yet full functional but they are constantly working to make it better. It loads quickly and operates smoothly. Great job guys. Can’t what for you to be able to program the calculator like the real thing!

by Nitapeeta

this is exactly like a graphing calculator, it is so useful for any type of math, way better than apple’s calculator, and much more convenient as well as less expensive as buying a real calculator 10/10 would definitely recommend :)

ps it’s really fun to see your teachers get mad at you for being in your phone and then showing them it’s a calculator hehe

by Will6952:77;;)),:)$(4577(4676

Calculate84 is amazing no ads, no janky controls it all just works. I am doing statistics right now in my math class which requires lots of menu navigation and it’s all so fast! I feel like a math Wizz when I use Calculate84 thank I'm amazed by the level of polish in Calculate84 I would gladly pay 2 or 3 dollars for Calculate84 without question but it’s free yet another reason as to why Calculate84 deserves 5 stars!!

by Satisfiedinsouth

I needed a scientific calculator on my phone that would follow order of operations, and had a history function. Went though several apps that either had too many ads or had a hefty price tag. Calculate84 is similar to graphing calculator and has helped me when a calculator is not near!

by Sw1ft3r

I’ve never seen a TI84 recreated and implemented as smoothly for the price point of being free (for now). It’s been an absolute joy to work with so far and works exactly like how you would expect a TI84 to function but on your phone! I’ve used other apps that have individually either been for graphing or for being a non graphing calculator, but to finally see a free app combine the two worlds is a joy to see.

by Junnii_

For my ipad Ive been looking for the best iPad calculator. After a lot of looking this has been the best one so far. Nice looking UI, very responisive, never any issue. Supports floating windows which is really convenient. No ads, excellent user experience and incredible functionality. Just like my old Ti-84 it is almost 1 to 1. Best calculator app hands down, especially for students. Loved using this for physics and calculus. Really underated, needs more recognization for what it offers.

by Nicknamenicjname13748483&3&

This puts all other graphing calculator apps (that I’ve tried, which is numerous) to shame, and this is mostly because it WORKS. There’s no inconveniences with the workflow, for instance I can actually return to the calculation view from the graph view simply by hitting clear. Many other apps require the 2nd button to be pressed, then quit. How annoying!

Oof I just realized it only has linear regressions, though. That’s almost a deal breaker. Well a diff app can be used for that...

by Phoneworm

I was learning about graphing the line of best fit in school and the teacher give it for homework, but I don’t have a graphing calculator. The teacher says that we could come tomorrow at ILT (free work time) but I can’t because I has to go to Digi Tool and finish my photoshop assignment. That when I came up with an idea to go online and search for a graphing calculator. I try many many app but non of them let me do the “4:LinReg(ax+b),” I need to pay for it. You don’t know how happy and reliefs I feel when your app allow that. You save my grade, thank you!

by Pkpkpkok

I absolutely love Calculate84. Works perfectly, can handle all graphing duties, better functionality than the actual physical calc with the ability to highlight/select previous answers and equations quickly/scroll/graph in different colors/auto max min intercept when tracing. All settings and modes work correctly. I’m almost at the end of my semester with chem/physics/trig and Calculate84 has been right there too without fail. It’s to the point I hate exams mostly because I’m forced to use my annoying TI calc.

by **insert Nickname***

I know how to use a ti-84, they’re expensive and I can’t take one home but I’ve got one on my computer that does the same thing. I needed to punch in a bunch of derivatives of inverse functions which is a pain to do on the computer. I resorted to using Photomath to try and get it to solve but that doesn’t work so on a whim I downloaded Calculate84 and omg.
It does exactly that you’d expect, all the shortcuts are the same, it’s got the capability to do all the calculus I need, whoever reads this from development go pat the creators on the back because I am so thankful

by Adsylrod

Super smooth and works almost exactly like a Ti-84 from my very limited testing. The Ui is well designed and there are no ever present intrusive ads. It was actually recommended by one of my teachers when I was in algebra 2 as a possible replacement for a calculator. Still, of course you can’t use something like this on a test, and as far as I can tell it only has linear regressions, which makes its use cases limited as years go by. Still, it is definitely worth downloading for younger students who don’t want to spend the equivalent of 60 popeye’s chicken legs for a calculator.

by Дима_и_Вероника

I am an engineering student, and I am always in need of a calculator handy. There’s quite a few great apps out there that can be used as a graphing calculator, but getting used to different user interfaces is always a pain when switching between calculators. I’m used to the TI-84 Plus CE, and this calculator is exactly identical to a TI-84 Plus. Not all the functions of the calculator are available yet (the apps button currently does not do anything) but most of the functions that are necessary to my work are available (like matrices and trig particularly). Overall, this is a great app and I never usually leave reviews, but had to give my opinion for amazing app.

by AertoneFX

Calculate84 has a beautiful interface that makes you feel just as if you are holding a Ti-84 in your hands. With Calculate84, you seriously can not lose your Ti-84 again! All of the functions seem to be working well, the haptic feedback is just right, and the overall look and feel of Calculate84 is just amazing. Absolutely stellar, a definite recommendation for anyone that wants to make sure they always have their Ti-84 on them.

by 082604

There are some major things that I am not able to use like ZoomStat which is huge when using this kind of calculator for Algebra II in high school. I think that once some of these basic things are added for me I think this would be humbled up to at lease a 4.5 star app.

by Aputnam70

I was in search of a calculator where I could use Poly Root Finder & Simultaneous Equation solver (applications) as we do not have a classroom set of calculators with this feature.... the apps button doesn’t work on this, so it must not be a feature or it’s still in process.... overall, the calculator itself does a lot compared to others.

by Mr.Corncob

This is truly a great app and as they update it more it’ll only get better I also appreciate how quickly they are updating it to make it a fully functional TI-84 alternative

by Scsvajgl

I mean ig it’s a good calculator I like the way it looks. But it needs to be completed. So many things are unfinished and many operations I’m trying to do and unavailable. For example, matrix operations aren’t available

by MathTeach196

Has been great to explore and seems to be a great alternative to a handheld. Hope landscape view will be added in the future for easier use when using other apps simultaneously.

by MangoSunrise245

useful for my algebra I class, but i wish there was a linear regression feature. i tend to have trouble with linear regression and a ti-84 lets me solve for it. other than that, EXTREMELY useful! :D

by Fluffycat Butt

Calculate84 was great since i have hw after school and cant take my calculator home but it it missing a few things. Although i have only missed one, i really need to know how to find the line of best fit on this. Thanks

by Gummy8ears2298

I love Calculate84!!! I downloaded it to use it for geometry because the original calculator on the phone doesn't have all the features I need. Since I’m too lazy to get my calculator from my bag, and my phone is right next to me, I love this graphing calculator!!!

by Xxctro

I love Calculate84 , allows you to use the calculator in case you don't have one. Still missing some features but they are currently working on it.

by BigGrannyFan!

Calculate84 is amazing! It saves time and money! It is so useful especially since I’m not gonna be carrying a special math calculator everywhere so this is super awesome! I recommend it fully.

P.S- Good job creators!!!!

by Mosuah

I have used TI-84s in a lot of my classes and have muscle memory from using them a lot. Other similar calculator apps are passable but many times I would have to re-enter my calculations because I’m not used that app. Calculate84 is perfect it takes what I am already accustomed to and adds to it. My favorite thing is being able to touch edit the window.

by Bcuhcdub

This is by far the best calculator app. It’s exactly like the really calculator but your able to touch the scream and zoom in and out on the graph with your fingers. Pretty cool. 10/10

by Antomic

Really great calculator. I am used to TI-84 calculators and so this one is perfect. It is missing some functionality like multi variable statistics but I know the developer is working on it :)

by Cabecool10

Obviously, Calculate84 is still a WIP, but for what it has, it’s amazing. I would like to notify the developers that if you graph lines and zoom in too much, they just disappear, but it isn’t too big of an issue. Thanks for an amazing app!