# Calculation! > Scientific calculator with copyable expression history and advanced functions. (iPhone/iPad app by Paul Koomey.) - Source: https://appshunter.io/ios/app/calculation/id1574468544 (this page in markdown: same URL + `.md`) - Developer: [Paul Koomey](https://appshunter.io/developer/1574468546) - Category: Utilities, Education - Price: Free - Rating: 5.00/5 from 88 App Store ratings · 37 written reviews indexed - Age rating: 4+ - Requires: iOS 14.3 · 0 MB - Languages: English - Released: 2021-07-25 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculation/id1574468544/reviews.md ## What is Calculation!? Calculation is an easy to use, scientific calculator with a copyable expression history. Key features: - Double tap to copy expressions and results - Expression history - Ans button - Trig and inverse trig functions - EE, π, and e - Degree and Radian modes - Share with friends button ## Key features - Copyable expression history - Double tap to copy - Ans button - Trigonometric functions - Degree and Radian modes - Share functionality ## Recent user reviews (10 of 37) All indexed reviews: https://appshunter.io/ios/app/calculation/id1574468544/reviews.md ### 5/5 — This is the calculator app I have been needing! *2023-10-02, version 1.1.3* 10/10. Very powerful and user friendly. Apple should buy this and make it the default calculator! ### 5/5 — The Best Calculator App *2023-09-22, version 1.1.3* This calculator is so simple to use! The best thing, is that I can see everything I’m doing, with Apples calculator I can’t do that. This app also has a very clean design and I have used it for 2+ years and have not had any problems with it. Keep up the great work! ### 5/5 — Love the developer, wish I could hug them *2022-09-04, version 1.1.3* This is legit the best calc app for basic operations, better than the default apple calculator. I saw the developer’s post on Reddit a while back asking to check the app out. I honestly thought it was gonna be crap, but I was completely wrong. To the developer, keep working on this calc project and adding more operations to the point where this app has as many operations as the default apple calc. ### 5/5 — better than calculator! *2022-09-04, version 1.1.3* amazing app! ### 5/5 — I use it daily for work. *2022-08-09, version 1.1.3* Easier to open this up the. Grab my calculator for my engineering work. Requesting a copy paste option. Would be helpful to be able to snag large numbers and paste them. Just to clarify, I mean from outside the app. There is currently no ability to copy from outside the app and paste the number in. ### 5/5 — The only normal calculator app on mobile *2021-12-31, version 1.1.2* No profit motive, no designs/features drawing you in, just a calculator app made by a college student for a project. No strings attached. Will forever be my mobile calculator. ### 5/5 — Does what it says it does *2021-10-11* Clean simple interface. Ad free. Will be great to see the iPad version Good stuff. ### 5/5 — Where have you been all my life! *2021-10-11, version 1.1.2* Tried many calculators and none met my standards. This is just what I need!! Thank you! ### 5/5 — No Ads. Clean UI *2021-10-11, version 1.1.2* Simple and easy to use. ### 5/5 — Yes! *2021-10-10, version 1.1.2* It’s a calculator. It loads quickly and works perfectly. What else is there to say? ## Frequently asked questions about Calculation! ### What does Calculation! do? Calculation! is a user-friendly scientific calculator that allows you to perform complex mathematical operations. It features a history of your expressions and results, making it easy to track and reuse calculations. ### What are the key features of Calculation!? Key features include a copyable expression history, an 'Ans' button for quick reuse of the last result, trigonometric and inverse trigonometric functions, support for constants like π and e, and both degree and radian modes. You can also easily share your calculations. ### Is Calculation! free to use? Yes, Calculation! is a free application. There are no costs associated with downloading or using its features, and it does not contain in-app purchases or advertisements. ### Who is Calculation! for? This app is designed for anyone who needs a reliable scientific calculator, including students, engineers, scientists, and professionals who frequently perform mathematical calculations. Its intuitive interface and advanced functions cater to a wide range of users. ### How do I copy past calculations? To copy expressions and results from the history, simply double-tap on the desired entry. This feature allows for quick and efficient reuse of previous calculations without needing to re-enter them manually. ## Version history (last 5 releases) ### 1.1.3 — 2022-03-04 Updated app preview ### 1.1.2 — 2021-08-18 New Feature: - EE button when 2nd is pressed ### 1.1.1 — 2021-08-03 General fixes: - Buttons now look better on iPhones with smaller screens - Bluetooth keyboard functionality ### 1.1.0 — 2021-07-28 New share button in the menu!! ### 1.0.0 — 2021-07-26 No release notes. ## Apps similar to Calculation! | App | Rating | Price | Category | | --- | --- | --- | --- | | [小灵龙App](https://appshunter.io/ios/app/app/id1221738240) | 1.0 (12) | Free | Utilities | | [Omega Calculator](https://appshunter.io/ios/app/omega-calculator/id1528068503) | 4.7 (42) | Free | Utilities | | [Rule of Three Calculator](https://appshunter.io/ios/app/rule-of-three-calculator/id1185318300) | 2.3 (4) | Free | Utilities | | [レコーダー - スピークバディ パーソナルコーチング](https://appshunter.io/ios/app/id1469874020) | — | Free | Utilities | | [TLF Events Tamil](https://appshunter.io/ios/app/tlf-events-tamil/id1481109080) | — | Free | Utilities | | [Calculi: Scientific Calculator](https://appshunter.io/ios/app/calculi-scientific-calculator/id452182503) | 4.4 (374) | Free | Utilities | --- *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 2026-06-10.*