# Calculator X Free - Advanced Scientific Calculator with Formula Display & Notable Tape > Advanced scientific calculator with formula display and noted tape. (iPhone/iPad app by 雪辉 吴.) - Source: https://appshunter.io/ios/app/calculator-x-free-advanced-scientific-calculator-with-formula-display-and-notable-tape/id427770598 (this page in markdown: same URL + `.md`) - Developer: [雪辉 吴](https://appshunter.io/developer/376355595) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 1.67/5 from 6 App Store ratings · 51 written reviews indexed - Age rating: 4+ - Requires: iOS 5.1.1 · 7 MB - Languages: English - Released: 2011-04-26 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/calculator-x-free-advanced-scientific-calculator-with-formula-display-and-notable-tape/id427770598/reviews.md ## What is Calculator X Free? Scientific Calculator shows your complete calculation formula, Comment for echo value in paper tape list, In-App Email formated formula paper tape. * Features: - Portrait Regular Calculator and Landscape for Adnvanced Scientific Calculator - Customizable Calculator's background from your photos album. - Beautiful Bright Abstract Glow HD Background - Displays the calculation formula with its result at the same time - Full formated calculator paper tape list - IN-APP E-Mail your noted formula paper tape - Enter a comment for each value in formated calculator paper tape - Memory recall the last result and insert it into your calculation - Accurate 16 digits and E+ for more ## Key features - Formula display with results - Customizable backgrounds - Emailable calculation tape - Commentable tape entries - Memory recall - 16-digit accuracy with E+ ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Calculator X Full Version & Remove Ads | $2.99 | one-time | | Full Version with ads | $0.99 | one-time | ## Recent user reviews (10 of 51) All indexed reviews: https://appshunter.io/ios/app/calculator-x-free-advanced-scientific-calculator-with-formula-display-and-notable-tape/id427770598/reviews.md ### 1/5 — CalculatorX *2019-11-17, version 3.4* Cool one star of greatness and cool add on image background shame you add on a Xmas tree and is turned upside down... I had to uninstall it due to no personal add on image as it is not in facing portrait mode... But is gorgeous in reliability, it helped me out. Please update to more colors, I got criticized on the brown... Thanks ### 1/5 — Doesn’t work *2019-03-13, version 3.4* Paid for advertising to be removed and it’s not. It stinks. Don’t pay for advertising removal it doesn’t work. ### 1/5 — You pay for ads *2017-08-26, version 3.4* I bought the pro version with no ads and I still have ads and no background and nobody to contact to tell them what I think of their app. ### 1/5 — C R A P *2016-12-08, version 3.4* Don't waste your money, it's completely rubbish. There's no support, just a scam. ### 1/5 — I already own it and had for a long time *2016-09-04, version 3.4* But in trying to contact them about bugs they make it so I can't ; I already purchased ad free full and it said I did but the adverts retain and even more comes up when non should , and I already own it .. Why does Apple allow this activity , like there endorsing it .. Now the change background changing doesn't work with no way to contact bug reports to have it fixed ; Apple likely still sells it and refuses to hammer down on this issue of selling apps with no support to bug fixes , it's not like they don't know how to contact the maker as well as still selling the apps .. And I own the full pro version not the free .. .. ### 1/5 — Buggy *2016-07-23* I tried to use this app, and I thought this app would be nice and friendly, but the app is too buggy. I really hate that because once I turned my phone into sideways, the app closed and kick me out. I tried to tap the app so I need to use it, but it turned black. Now, it restarts my phone and I have to wait 5 minutes for the app to start loading. Please fix that! Also, order of operations is what you need to work on! 5+3*2 does not equal to 16! The answer is 11! Oh, you think that since addition come first in the problem, then you add first? Don't you learn that from school? I guess that you weren't pay attention when the teachers taught you math. Is that true? If no, then why you din't even know order of operations. Now, I am your teacher. You use PEMDAS as your order of operation. This stand for Please Excuse My Dear Aunt Sally. Or Parentheses, Exponent, Multiplication, Division, Addition, and Subtraction. You do parenthesis first. Then exponent. You either do division or multiplication first if they appear first. You do it before addition and subtraction. No matter if addition or subtraction comes before multiplication or division, you always do them BEFORE addition and subtraction. Again no matter if addition and subtraction comes first, you do one of them in the order from left to right. Do you understand me? If no, then piaaaa ### 1/5 — Nothing but ads. *2016-07-21* Good luck using this "app", huge ads pop up constantly. Try and change the wallpaper and the calculator flips upside down. Useless trash. ### 2/5 — Disappointing *2016-01-04, version 3.4* I paid for the upgrade because I was fed up with the adverts but in spite of my money being taken I couldn't stop them. I deleted the app and tried downloading again all to no avail. I've given up now. Also if anyone can tell me how to contact support I should love to know - I've spent hours trying to fathom it out. ### 1/5 — Deleted app *2015-07-06* Ads pop up constantly over center of screen obscuring buttons. Screen flips upside down afterwards. ### 1/5 — Ads ads ads *2015-04-10* Don't get if you hate clicking up on polyp ads when you least expect it. Garbage app ## Frequently asked questions about Calculator X Free ### What does this calculator app do? This app functions as an advanced scientific calculator. It displays your complete calculation formula alongside the result, and provides a detailed paper tape list for all your calculations. You can also add comments to each entry on the tape and email the entire tape. ### What are the key features of this calculator? Key features include a simultaneous formula and result display, a full formatted calculator paper tape list, the ability to email your noted formula paper tape, and the option to enter comments for each value. It also offers memory recall for the last result and supports accurate 16-digit calculations with E+ notation. ### Is this calculator app free to use? The application is available for free. However, it does offer in-app purchases, which may unlock additional features or customization options beyond the core functionality. ### What devices is this calculator app compatible with? The app is designed for mobile devices. It offers a regular calculator interface in portrait mode and an advanced scientific calculator interface when the device is in landscape mode, suggesting compatibility with smartphones and tablets that support orientation changes. ### Who would benefit from using this calculator app? This app is ideal for users who require more than a basic calculator, such as students studying science or mathematics, engineers, scientists, or anyone who needs to perform complex calculations and wants a clear record of their work. The formula display and noted tape are particularly useful for tracking and reviewing calculations. ## Version history (last 5 releases) ### 3.4 — 2015-04-03 This app has been updated by Apple to display the Apple Watch app icon. - iOS 8.2 tested - Minor bug fixes ### 3.3 — 2014-10-02 - iOS 8 support - Performance improvements ### 3.2 — 2014-08-01 - iOS 7.1.2 tested - Minor bug fixes ### 3.1 — 2014-04-26 - Performance Improvements - Minor bug fixes ### 3.0 — 2014-03-28 - Speed and Performance Optimization - Minor bug fixes ## Apps similar to Calculator X Free | App | Rating | Price | Category | | --- | --- | --- | --- | | [GrusHome](https://appshunter.io/ios/app/grushome/id1455196140) | 5.0 (1) | Free | Utilities | | [创衣盒子dBOX](https://appshunter.io/ios/app/dbox/id1462858880) | — | Free | Utilities | | [TCI Bitacora](https://appshunter.io/ios/app/tci-bitacora/id1464209780) | — | Free | Utilities | | [A-note](https://appshunter.io/ios/app/a-note/id1454807560) | — | Free | Utilities | | [安泰考培宝典](https://appshunter.io/ios/app/id1455455260) | — | Free | Utilities | | [Komobi Moto](https://appshunter.io/ios/app/komobi-moto/id1456290000) | — | Free | Utilities | ## More apps by 雪辉 吴 - [Super Prober Web Browser Free - Full Screen Desktop Tabbed Fast Browser with Page Thumbnails](https://appshunter.io/ios/app/super-prober-web-browser-free-full-screen-desktop-tabbed-fast-browser-with-page-thumbnails/id415843444) - [Fast Web Browser - New automatic full screen firefox chrome like themes edition](https://appshunter.io/ios/app/fast-web-browser-new-automatic-full-screen-firefox-chrome-like-themes-edition/id439204637) - [Fast Web Browser Free - New automatic full screen firefox chrome like themes edition](https://appshunter.io/ios/app/fast-web-browser-free-new-automatic-full-screen-firefox-chrome-like-themes-edition/id440129616) - [Air Disk Free - Wireless HTTP File Sharing](https://appshunter.io/ios/app/air-disk-free-wireless-http-file-sharing/id444063740) - [High-Speed Download - File Download Manager](https://appshunter.io/ios/app/high-speed-download-file-download-manager/id445569678) All apps by 雪辉 吴: https://appshunter.io/developer/376355595 --- *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.*