# CalculateRetro — Track all your calculations > A versatile calculator app for tracking and exporting calculation history. (iPhone/iPad app by Hannes Sverrisson.) - Source: https://appshunter.io/ios/app/calculateretro/id428851944 (this page in markdown: same URL + `.md`) - Developer: [Hannes Sverrisson](https://appshunter.io/developer/428851947) - Category: Business, Utilities - Price: $1.99 - Rating: 4.50/5 from 15 App Store ratings · 17 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 16 MB - Languages: American English - Released: 2011-04-07 - Data updated: 2026-09-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculateretro/id428851944/reviews.md ## What is CalculateRetro? Featured in What´s Hot on iTunes The BEST Calculator! App for iPad, iPhone, iTouch and Apple Watch. Ever lost your train of thought half way through a calculation and thought how handy it would be to have a print out or e-mail of your work? Features: - Print out the calculation history or send by PDF. - Correct with a backspace key if you enter a wrong digit without having to redo all. - Email, PDF or Print the calculation history. - PDF the Tape and access previous in the Documents Folder. - Exchange Documents in iTunes or open in iBooks, Email, etc. - Rename and share PDF documents. - Copy and Paste numbers to other Apps, by tapping on the display. - Change number display to Fixed, Scientific, etc., by tapping on the display. - Customize the background, fixed digits, fonts, colors and sizes. - Customize the Tape font, size and color. - An audible sound confirms if you have pressed a button, which can be easily disabled by touching the speaker. - Show calculations on an Apple TV or an external monitor with a cable. - Previous calculation is repeated when the equal sign is pressed. - Grand Total calculated. - Numbers in Memory may be logged to the Tape. - A visible and audible error when trying to divide by zero or take the square root of a negative number. - Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe. ## Key features - Apple Watch calculator - Today View Extension - Printable/emailable calculation history - Backspace key for corrections - Customizable display and fonts - Dark mode support - Copy/paste functionality ## Recent user reviews (10 of 17) All indexed reviews: https://appshunter.io/ios/app/calculateretro/id428851944/reviews.md ### 5/5 — Go to Calc *2021-06-04* I love this app because of the running tape. I can quickly see if I made a mistake. Id love to fig out at the end when I press = for the total to not double but Im sure its my not understanding. All the others are nice but I like to be able to double check. ### 4/5 — Just About Perfect, 5/8/21 *2021-05-08* Have been breaking this in doing the budget. I just needed a good, simple calculator with a ribbon to keep track of my calculations and keep a running tally. Very pleased and glad I purchased it. Does exactly what I need with no fuss. It also has many features I probably won’t need personally, but they will also be welcome for those who do. Good work guys! ### 1/5 — Geht nicht auf die iWatch *2016-05-01* Warum nicht??? Was prüfen den die Prüfer von Apple??? ### 1/5 — Installation auf Apple Watch nicht möglich *2016-04-17* Die App lässt sich auf der Apple Watch nicht installieren. Der Vorgang beginnt, bricht dann aber wieder gleich ab. Zum glück kostenlos erworben! ### 5/5 — Excellent! *2015-02-13* First class. My go-to calculator. ### 5/5 — I love it *2014-07-26* Great clean interface. And keeping a running tally AND the ability to print the whole thing out? Who would've thought these old school items would be so useful? Great job. ### 5/5 — Best Calculator *2014-06-06* I have looking around to get calculator for daiky usage and this one I really like. I see my mistakes and its fast ### 5/5 — Calculate retro *2014-05-31* 5 STARS.....ABSOLUTELY Well Done. ......gfb ### 5/5 — Very convenient!! *2014-04-26* Finally I can calculate very convenient. ### 5/5 — Great calculator *2012-09-26* It's good to be able to see the calculations and store them! ## Frequently asked questions about CalculateRetro ### Does CalculateRetro have ads? No, CalculateRetro is ad-free, allowing for an uninterrupted user experience. ### What devices does CalculateRetro support? CalculateRetro is available on iPhone, iPad, and Apple Watch, offering a seamless experience across your Apple ecosystem. ### How can I save my calculations with CalculateRetro? You can print your calculation history, email it, or export it as a PDF. These PDFs can be accessed in the Documents Folder or shared via iTunes. ### Can I correct mistakes in CalculateRetro? Yes, CalculateRetro features a backspace key that allows you to correct individual digits without having to restart the entire calculation. ### Is CalculateRetro suitable for business use? Yes, its ability to track, export, and share calculations makes it a useful tool for various business needs, especially for record-keeping. ### How often is CalculateRetro updated? The app was last updated on September 18, 2023, indicating ongoing support and potential for new features or improvements. ### What is the age rating for CalculateRetro? CalculateRetro has an age rating of 4+, making it suitable for a wide range of users. ### Can I customize the appearance of CalculateRetro? Yes, you can customize the background, fixed digits, fonts, colors, and sizes of the number display and the tape. ## Version history (last 5 releases) ### 5.6 — 2026-06-10 - Updated for iOS 26. ### 5.5 — 2023-09-18 - Updated for iOS 17 ### 5.4 — 2022-11-28 - Minor errors fixed. ### 5.3 — 2021-10-30 - Interface improved. ### 5.2.2 — 2020-12-14 - Improved keypad input allowing to use Enter key for adding. - Colors added to backgrounds and UI improved on iPads. - Menus added for running on Apple Silicon Macs. ## More apps by Hannes Sverrisson - [Calculate Lite](https://appshunter.io/ios/app/calculate-lite/id429275228) - [Calculator Silver](https://appshunter.io/ios/app/calculator-silver/id432572975) - [Calculator Silver Lite](https://appshunter.io/ios/app/calculator-silver-lite/id432968949) - [Scientific Calc](https://appshunter.io/ios/app/scientific-calc/id456710555) - [ScientificLite](https://appshunter.io/ios/app/scientificlite/id458730784) All apps by Hannes Sverrisson: https://appshunter.io/developer/428851947 ## Related topics [calculateretro](https://appshunter.io/ios/topics/calculateretro) --- *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 2026-09-04.*