# Calc 2M — user reviews > 100 indexed App Store user reviews of Calc 2M by inkOfPixel srl, rated 4.90/5 from 27 ratings. - Source: https://appshunter.io/ios/app/calc-2m/id492563960/reviews - App overview in markdown: https://appshunter.io/ios/app/calc-2m/id492563960.md - Rating breakdown: 5★ 25 · 4★ 1 · 3★ 1 · 2★ 0 · 1★ 0 ## What do users think of Calc 2M? Overall sentiment: positive **Pros** - 👍 Clean, intuitive, and user-friendly interface - 🧮 Powerful scientific calculator with extensive functions - 📜 Accessible calculation history that persists across sessions - ✏️ Ability to edit and reuse previous expressions - 🎨 Beautiful, aesthetically pleasing design - ⚡ Fast and responsive performance - 🆓 Free with no ads - 🎯 Better than Apple's built-in calculator - 🔄 Gesture-based controls for efficient navigation - 📱 Works seamlessly on iPhone **Cons** - 🐛 App crashes on startup (older versions) - 🔤 Font size and style options are limited - 📱 iPad version is laggy and poorly optimized - ❌ Error handling requires restarting from beginning - 🎮 Swiping gestures sometimes trigger unintended functions - 🔍 Poor App Store search visibility - ⌨️ Difficult to make numbers negative - 🔧 Editing long expressions is cumbersome - 📊 Lacks some standard scientific calculator features **Commonly reported bugs** - App crashes on startup - Trigonometric functions produce incorrect results - Combination function (comb) returns wrong values - Sin and Tan functions malfunction - Swiping causes unintended function entry - Error state requires complete restart - iPad version is laggy and unresponsive - Spelling error in function names (trigonometry misspelled) - App doesn't open on some devices **Most requested features** - Automatic bracket completion - Fraction to decimal converter and vice versa - Apple Watch app support - More font options and customizable font sizes - RPN (Reverse Polish Notation) mode - Dedicated Clear/CE button in prominent location - Easier negative number input - Algebraic functions - Graph plotting capabilities - Ability to disable advanced options for basic calculator view ## Newest reviews (18 of 100) ### 4/5 — Custom font size and style *2019-09-29, version 3.2.3* The font of all themes looks not so comfortable, especially for numbers. Please provide more font options and allow to change their sizes. Good job for calc itself! ### 5/5 — good *2017-05-27, version 3.2.1* thanks ### 5/5 — Awesome!! *2016-12-23, version 3.2.1* Exactly what I was looking for! I appreciate the clean interface, freedom from ads, and being able to see my calculation history on the same screen. Thanks for the great app! ### 3/5 — Norwie *2016-12-16, version 3.2.1* Not impressed will not clear ### 5/5 — Great math app *2016-11-22, version 3.2.1* Fabulous math app been looking forward to finding one and I think I just found one that I am going to totally enjoy already like it very much it also explains how to work it if you have problems this is exactly what I've been looking for I give it five stars I would remove one but then I found the information about it if you have problems you get help right on your phone you got try it you'll love 💙it thank you for this app ### 4/5 — Great app! *2016-09-21, version 3.2* Very useful for my class, and the light theme is fantastic, especially if you want to use it in a bright room and prefer a bright colour. Although, it should automatically fill out your last bracket if you forgot to put it in and not display "syntax error" ### 4/5 — Impressive *2016-09-21, version 3.2* Perfect app with a stunningly clean and efficient UI. Bring back the blue icon! Black is dull and doesn't fit with most popular app colours ### 5/5 — 👍🏿 *2016-09-20, version 3.1.1* Love the app! It is aesthetically appealing to my eyes and it performs everything I need smoothly, good job! ### 5/5 — Great! *2016-05-07, version 3.1* This is the best free calculator on the App Store! ### 5/5 — Great App *2016-04-24, version 3.0.2* This is a nice calculator with a beautiful user interface. Congrats to the developer. ### 5/5 — Great cal *2016-04-23, version 3.0.2* Really helpful making this calculator app because there a some great functions that I use daily. ### 5/5 — Best engineer's calculator *2016-04-23, version 3.0.2* Best calc app for somebody who really uses it ### 5/5 — Better than the system calculator *2016-04-22, version 3.0.2* Beautifully made UI, very intuitive and powerful! Will keep it. ### 5/5 — Excellent calculator *2016-04-09, version 3.0.2* Very useful calculator. Love it! ### 5/5 — Excellent! *2016-04-08, version 3.0.2* This is what I need! Fantastic calculator! ### 5/5 — Awesome *2016-04-07, version 3.0.2* Excellent calculator app and it's scientific. Really helpful. ### 5/5 — Great app! *2016-03-24, version 3.0.1* I love it!! Expecially for the possibility of editing or reusing an expression from the history! Also: great choice of math functions and I love the design! Good job! ### 4/5 — Great app but lacks an Apple Watch counterpart *2016-03-22, version 3.0.1* Really great, love it. It would be really awesome if you guys make an Apple Watch app. ## Most critical reviews (10 lowest-rated) ### 1/5 — iOS13 - calc need to be fixed *2019-09-21, version 3.2.3* Need to be fixed When get error then all need to start from beginning... Swiping cause entering functions ### 1/5 — Sucks *2016-08-03, version 3.1.1* The app doesn't even open, please fix this issue. ### 1/5 — Crash on start. *2013-04-04, version 2.0.9* Latest update crashes on start. ### 1/5 — Not good *2013-04-03, version 2.0.9* Just got this app and all it does is crash a soon as u open it. Needs to be fixed ### 1/5 — App in the starting phase of development *2013-03-11, version 2.0.1* -no "Clear" key -Will not effectively handle chain discounts -User interface and graphics very poor Keys and read out hard to read ### 1/5 — .. *2013-03-05, version 2.0.1* Don't see why developers even bother there is a perfectly good built in calculator if you haven't found that already. Definitely prefer the built in calculator. ### 1/5 — Sin, Tan function doesn't work. *2013-03-05, version 2.0.1* Sin. Tan. Functions are seems to be messed up. ### 1/5 — Boring *2013-03-04, version 2.0.1* I think It is boring ### 2/5 — I can not find the CE button *2013-03-05, version 2.0.1* Where is the Clear Entry button? ### 2/5 — Still does not outweigh a Casio scientific calculator *2013-03-05, version 2.0.1* If the developers could add all features present on the Casio standard scientific calculator, this would be a prime app. Basic functions, such as a ( ab/c ) button to convert answer to fraction. ## Most praised reviews (10 highest-rated) ### 5/5 — Solid app. *2026-01-17, version 3.2.4* It is simple and straightforward. Once you know the links to it. It’s easier to use especially when doing complex calculations. The table allows for moving answers and expressions. ### 5/5 — The best calculator app *2024-09-30, version 3.2.4* This remains the best scientific calculator app even after Apple updated their own in iOS 18. Love the interface and its ease of use. ### 5/5 — Awesome calculator *2022-09-30, version 3.2.4* The best I have found for iOS so far (and I have looked at a lot). ### 5/5 — I would call this the best calculator in App Store *2019-01-27, version 3.2.3* It’s a shame that it didn’t show up in App Store “calculator” search results. ### 5/5 — Calculator, with the user in mind. *2019-01-08, version 3.2.3* The software developers have created an excellent software app in this calculator, the basic app is a great function based calculator with an easy accessible history, and should need further add-on’s they are available ie higher financial functions etc. but the basic app should meet your day to day needs, great app, I encourage you to delete apples calculator and replace it with this one. D.B.Hughes. ### 5/5 — New update? *2018-02-13, version 3.2.1* The most practical calculator app... ### 5/5 — Love it! *2017-09-30, version 3.2.1* There will be history of calculations. Plus you can refer to the previous calculation even it's from yesterday! ### 5/5 — 5stars *2017-08-13, version 3.2.1* Interface is wonderful ### 5/5 — best *2017-08-08, version 3.2.1* no ads great ### 5/5 — Best free calculator. *2017-08-05, version 3.2.1* Great. --- *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 2026-06-11.*