# CalcQX ~ the calculator > A general-purpose calculator for standard and scientific calculations. (iPhone/iPad app by CodeQX.) - Source: https://appshunter.io/ios/app/calcqx-the-calculator/id406295517 (this page in markdown: same URL + `.md`) - Developer: [CodeQX](https://appshunter.io/developer/406295520) - Category: Utilities, Productivity - Price: $0.99 - Rating: 4.50/5 from 2 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 5 MB - Languages: English - Released: 2010-12-11 - Data updated: 2026-08-11 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/calcqx-the-calculator/id406295517/reviews.md ## What is CalcQX ~ the calculator? Using CalcQX, no longer double checking the answer by doing the calculation again! Standard Mode: Works like the way billions of real standard calculators in the world do. Engineering Mode: Capable of doing complex scientific calculation, but remains easy-to-use as a standard calculator. Large buttons and easy-to-use. CalcQX gives you seamless calculation experience like a real calculator you used in daily life. CalcQX is a general purpose calculator designed to meet daily calculation requirement with easy-to-use, fully reversible, convenient memory slots, and beautifull, info-rich screen. CalcQX features: * iPad/iPhone/iPod Retina display ready for vivid and elegant image * Up to 50 memory slots for historical calculations/expressions * Swipe-right to undo, swipe-left to redo at any step during calculation * Jump into any step of calculation to modify operator or operand * Info-rich display * Scientific function support. * Percent button will behave like real calculator * 4 additional memory slots (M1 ~ M4) for calculation (Tap-and-hold or M+/M- to memory the number currently shown on the screen and tap again to recall) * Reusable expressions/results * Clipboard/email support. * More great features, but even easier to use than build-in calculator. You will love it! Follow us on Facebook: http://www.facebook.com/pages/CalcQX/171355629551053 ## Key features - Standard and Engineering calculation modes - Undo and redo functionality - Up to 50 memory slots - Reusable expressions and results - Info-rich display - Scientific function support ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/calcqx-the-calculator/id406295517/reviews.md ### 4/5 — Pretty good: but could use a couple improvements *2013-12-15* I really like that this calculator has 4 additional memory slots and that all stored memory values persist across sessions and are always visible. That means I can store constant values in one or more of them for easy selection and recall at any time. VERY GOOD! There does not seem to be a way to contact the developer or support though and the last update was over a year ago. Here are my suggestions for improvement. 1. Display negative values in red. 2. The fonts used to pack in all the displayed information are very small which makes it a problem for folks like me to read them. This is WAY MORE a problem for an iPhone than an iPad. So, see #3. 3. The "active" memory slot appears to be indicated by dark-graying that slot's entire display field. The memory values are always displayed in black so it's black on dark gray making it very hard to read the selected slot's value. NOT GOOD IN GENERAL. What I think would be much better is if just the name of the selected slot (MR, M1, etc) were in bold or green or whatever leaving the value portion of the memory fields a constant color (the current is OK) with positive values shown in black and negative in red. ### 5/5 — Excellent!! *2013-06-18* This is the best calculator I've used & believe me I've tried a lot. Definitely worth the price. Thanks!! ### 1/5 — HUGE PROBLEM WITH PERCENT CALCULATION *2013-06-05, version 2.0* CalcQX was my favorite calc apps. But I stop using it when I found many bad percent calculation results. ### 5/5 — CalcQX *2012-12-17, version 2.0* Excellente calculatrice, très complète pour la majorité des besoins courants. Je la recommande. ### 5/5 — lowrisk *2012-09-16* Finally found a calculator that works like a hand held. Great job. ### 5/5 — The best so far! *2012-09-15* Use it everyday and problems. ### 5/5 — I liked very much. Very very gret!!!!!!!! *2012-09-14* It Is very eficient ### 5/5 — great！！！！！ *2012-09-10* love it ### 4/5 — Calculatrice la plus utile au quotidien! *2012-09-09, version 1.9* Parfaite pour tous les genres de calculs! ### 5/5 — Mike Bvr *2012-09-09* The best calculator app I've ever used. Very user friendly and large keyboard with all the right functions. Best of all it was free. ## Frequently asked questions about CalcQX ~ the calculator ### What is CalcQX? CalcQX is a paid calculator app designed for both standard and complex scientific calculations. It offers features like undo/redo, extensive memory slots, and a clear display, aiming to provide a seamless user experience. ### How much does CalcQX cost? CalcQX is a paid application, priced at $0.99. This one-time purchase grants you access to all its features without any additional costs or subscriptions. ### What devices does CalcQX support? CalcQX is compatible with iPhone, iPad, and iPod devices. It is optimized for Retina displays, ensuring a vivid and elegant visual experience across supported Apple devices. ### How often is CalcQX updated? The latest version of CalcQX, 2.3, was released on June 27, 2023. The developer, CodeQX, typically provides updates to maintain functionality and potentially add new features. ### Does CalcQX have ads? No, CalcQX is an ad-free application. Users can enjoy a distraction-free calculation experience without any advertisements interrupting their workflow. ### What are the memory features in CalcQX? CalcQX offers up to 50 memory slots for historical calculations and expressions. It also includes 4 additional memory slots (M1-M4) for quick storage and recall of numbers. ### Can I edit past calculations in CalcQX? Yes, CalcQX allows you to jump into any step of a calculation to modify operators or operands. You can also swipe right to undo and swipe left to redo actions at any point. ### What is the age rating for CalcQX? CalcQX has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions. ## Version history (last 5 releases) ### 2.4 — 2026-08-10 1. compatibility update 2. bug fix ### 2.3 — 2023-06-27 1. compatibility update ### 2.2 — 2020-05-27 Release to comply with new App Requirements and Guidelines. ### 2.1 — 2017-08-08 1. fix iOS compatibility issue ### 2.0 — 2012-09-21 1. add 4-inch Retina display support 2. bug fix ## Apps similar to CalcQX ~ the calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Khadas Audio](https://appshunter.io/ios/app/khadas-audio/id6474470701) | 1.9 (14) | Free | Utilities | | [Fast Reply: Saved Replies](https://appshunter.io/ios/app/fast-reply-saved-replies/id6448081847) | 4.7 (33) | Free | Utilities | | [Ebbetts Pass Gas Service](https://appshunter.io/ios/app/ebbetts-pass-gas-service/id1521548147) | — | Free | Utilities | | [BigCalc](https://appshunter.io/ios/app/bigcalc/id373059494) | 4.0 (2) | $0.99 | Utilities | | [OSS Document Scanner](https://appshunter.io/ios/app/oss-document-scanner/id6472918564) | 4.5 (8) | Free | Utilities | | [Knot Guide](https://appshunter.io/ios/app/knot-guide/id293111210) | 4.6 (448) | $2.99 | Utilities | ## More apps by CodeQX - [CalcQX LITE - the calculator](https://appshunter.io/ios/app/calcqx-lite-the-calculator/id411279884) - [Mahjong Unlimited HD](https://appshunter.io/ios/app/mahjong-unlimited-hd/id434781441) All apps by CodeQX: https://appshunter.io/developer/406295520 ## Related topics [qx calculato](https://appshunter.io/ios/topics/qx-calculato) --- *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 2026-08-11.*