# Calculate84 — user reviews > 361 indexed App Store user reviews of Calculate84 by Century Light LLC, rated 4.80/5 from 52,603 ratings. - Source: https://appshunter.io/ios/app/calculate84/id1459712793/reviews - App overview in markdown: https://appshunter.io/ios/app/calculate84/id1459712793.md - Rating breakdown: 5★ 46,369 · 4★ 3,646 · 3★ 957 · 2★ 368 · 1★ 1,263 ## What do users think of Calculate84? Overall sentiment: positive **Pros** - 👍 Identical to TI-84 calculator - 🚀 Seamless and intuitive user experience - 💰 Affordable alternative to physical calculator - 📱 Convenient to have on phone - 🔍 Comprehensive functionality matching physical calculator - 🤝 Honest and responsive developers - 🎨 Beautiful and polished user interface **Cons** - 🐛 Occasional bugs and crashes - 🔍 Missing some advanced features like regression types - 🔒 Previous purchases removed without warning - 💰 Subscription model can be expensive - 📺 Intrusive ads in free version **Commonly reported bugs** - Crashes when using 2-sample T/Z interval functions - Incorrect results for inverse trig functions - Issues with graphing parabolas and tracing points - Regression equation not displayed correctly **Most requested features** - Add TVM solver functionality - Implement more regression types - Allow disabling of ads for free users - Restore previous purchase benefits - Optimize for mobile experience instead of emulating physical calculator ## Newest reviews (17 of 361) ### 3/5 — Wrong answers for exponential equations *2026-08-25, version 3.0.3* When I entered “Ans^-10”, Ans being 1e-1000; The wrong answer this gave me “1e-10000” instead of the correct “1e10000”. I noticed this many more times before while calculating big numbers like that, before crashing. Otherwise, this is a great calculator app, and I hope to see it get better! ### 2/5 — Lagging past week *2026-08-15, version 3.0.2* I love this app so much. I have a shortcut to it on my phone home screen, have told my friends to download it regardless of if they need a calculator app, etc. I have an average 30+ mins of screen time on this app alone for every calculation I need to do... until this past week. Out of seemingly nowhere, 5ish days ago, the entire app has been extremely slow. Like, type a number in and it shows up on the screen seconds later. Nothing else on my phone has been affected. Calculate84, I am one of your biggest fans, and if this issue is resolved I would love to update this review to the 5 stars you deserve. ### 3/5 — Was convenient, now slowed *2026-08-13, version 3.0.2* The app was a great convenience when I downloaded it a couple years ago. But lately, the app feedback has been significantly when I’ve tried to type in numbers. It has become more of an inconvenience due to the delay, sometimes lack of response. ### 3/5 — Close enough *2026-08-08, version 3.0.1* Easy to use but not like the actual calculator on some parts ### 5/5 — iPhone user *2026-07-13, version 2.6.4* If you are an iPhone user and need a calculator that is simple and easier to use with Trigonometry this is it !!! ### 5/5 — Amazing *2026-06-20, version 2.6.4* Works just like the real thing! ### 5/5 — Be *2026-06-13, version 2.6.4* This is the best calculator I’ve ever used. It’s great for decimals, fractions, numbers and so much more! ### 3/5 — Weird *2026-06-11, version 2.6.4* Kinda weird layout ### 5/5 — TI-84 equivalent *2026-06-05, version 2.6.4* This calculator app replicates the TI-84 Plus CE graphing calculator. It works and functions just like a TI-84 calculator. I’ve used this calculator for mostly my math homework when I didn’t have access to a physical calculator, but this TI84 equivalent is the closest thing to a real TI84. If you need a TI-84 calculator, but don’t have access to one, I recommend this app, you can use it anytime! Download Calculate84! It’s free! ### 5/5 — Idk mannn *2026-06-03, version 2.6.4* It a calculator ig ### 5/5 — Cool *2026-06-02, version 2.6.4* Awesome ### 5/5 — Just like the TI-84! *2026-05-26, version 2.6.4* I love this app, I’m a math teacher and encourage my students to get it every year. ### 5/5 — 5 Years With This App *2026-05-21, version 2.6.3* It is incredible. So many capabilities. Highly recommend! ### 5/5 — Helps *2026-05-20, version 2.6.3* Great to have on hand ### 3/5 — How do you use : ? *2026-05-18, version 2.6.3* I just bought the thing, and : doesn’t appear to work. ### 5/5 — Worth it *2026-05-17, version 2.6.3* It works exactly like a physical TI-84, and the ads aren’t even bad at all, they barely bother me so i can actually get my study guide done ### 3/5 — Solid *2026-05-15, version 2.6.2* Where is SinReg? ## Most critical reviews (10 lowest-rated) ### 1/5 — Why? *2026-08-25, version 3.0.3* Everything is locked behind a paywall, Why even pretend it’s free? ### 1/5 — Y’all took away ad free for early adopters. *2026-08-22, version 3.0.3* Restore purchase doesn’t work either. What a shame. That deserves a 1 star. ### 1/5 — Pro *2026-05-18, version 2.6.3* Why are you locking features behind a subscription paywall? It’s a calculator, not a game. ### 1/5 — Desmos *2026-05-11, version 2.6.2* Desmos is free dog why we charging money for limitless bounding ### 1/5 — Hggdfok *2026-03-24, version 2.6.2* Kya go in ### 1/5 — Horrible ads *2026-03-04, version 2.6.1* This app is showing pornographic ads at the top. Horrible for an app that is targeted to children ### 1/5 — What kind of A-hole puts adds on a calculator? *2026-01-30, version 2.6.1* 2 hrs into calc Hw and an add plays makes me lose my spot in the hardest problem assigned ### 1/5 — Does not have tanh *2026-01-30, version 2.6.1* This app does not mimic all functions of the TI-84. This is missing all the hyperbolic functions. ### 1/5 — The ads are terrible *2026-01-18, version 2.6.0* I loved using this app, however, over time the adds have become pornographic and I have had to delete it because I am sick of seeing these things. It’s sad that they let those kind of ads be apart of their app. ### 1/5 — Pornographic Advertising *2026-01-05, version 2.6.0* The calculator is great and has wonderful functionality, however, recently pornographic advertising has started to appear inside the app. ## Most praised reviews (10 highest-rated) ### 5/5 — Amazing app! *2026-08-27, version 3.0.3* I’m an educator and the good this app has done for some of my students who can’t afford a calculator is inestimable ### 5/5 — Yeee *2026-08-27, version 3.0.3* It’s tuff ### 5/5 — 72.4 times cos(58) is not 8.62 it’s 38.36 *2026-08-25, version 3.0.3* 72.4 times cos(58) is not 8.62 it’s 38.36. I checked google and apple calculator ### 5/5 — has saved my life *2026-08-16, version 3.0.2* got me through AP Calc and IB math. i love it!!! ### 5/5 — literally can calc big numbers *2026-08-15, version 3.0.2* great job ### 5/5 — Really Useful *2026-08-10, version 3.0.1* This calculator app is very useful for homework ### 5/5 — Best calculator app *2026-08-10, version 3.0.1* All functions of TI-84 for free. A lifesaver for broke high school and college students ### 5/5 — Exactly what you pay for *2026-07-21, version 2.6.4* It works exactly like how you expect it to. It’s literally a full fledged TI-84 calculator that’s on your phone. You have to pay the 30 dollars to actually use all of the features but that’s way cheaper than ones you can get at the store. This is a must have for anybody in school ### 5/5 — Awesome! *2026-07-17, version 2.6.4* This calculator is great I love how much it resembles the hand held version but I also really appreciate the little updates that allow you to edit your equations more easily than the hand held TI84 (or at least the one I have). This App is great I would highly recommend it. ### 5/5 — 5 Years in and Still my Go-to Calculator app *2026-07-14, version 2.6.4* Way past school age at this point but I still use this for all my calculating needs. A definite must-have for any smartphone user --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*