# Calculator T — Scientific Calculator > Scientific calculator with unit conversion, history, and memory functions. (iPhone/iPad app by Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd.) - Source: https://appshunter.io/ios/app/calculator-t/id6473983653 (this page in markdown: same URL + `.md`) - Developer: [Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd](https://appshunter.io/developer/1524258136) - Category: Utilities - Price: Free - Age rating: 4+ - Requires: iOS 11.0 · 16 MB - Languages: English - Released: 2023-12-11 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculator-t/id6473983653/reviews.md ## What is Calculator T? ● Functional Features: 1. Supports standard and scientific function modes. 2. Supports many unit conversion. 3. Displays both the equation & the result. 4. History Tape View - the most recent 100 historical records are automatically saved on your device, you can get them when you open the APP next time. 5. Supports 5 memory buttons and multiple memory records: MS (M Save), M+, M-, MR (M Recall) and MC (Clear Memory), If you often use Windows calculators, then you should be familiar with them. ^_^ 6. Supports copying for both current input and historical records by tap & hold on it - you can copy the equation/expression or the result to the clipboard. 7. Supports pasting equation/expression into input box with robust expression parsing capabilities from the clipboard. 8. Supports long equation/expression input - maximum 1500 characters. 9. Supports insert the equation or result of the historical record into the input box by tap & hold on it. 10. Optimized the layout for iPad, designed with elegant, easy and intuitive interface. 11. Turn on the F-E button to force convert the result to E-notation (scientific notation). 12. When you press the equals button, the APP will automatically fill in any unclosed parentheses in the equation. 13. Supports Equals Repeat function - the APP will automatically repeat it if the last calculation is simple arithmetic operations (+, -, ×, ÷). 14. No ads. ● Math & ALGEBRA Features: 1. Supports 32-bit input precision & calculation precision, this means you can enter 32-bit integer or 32 decimal places. 2. Supports input of maximum scientific notation exponent "9999", eg. 999999E9999. 3. Supports big integer & rational number: For the factorial calculation of positive integer, up to 10000! (about 2.846E+35659). For the calculation result, maximum support 9.999E+99999999. 4. Support constants π, e. 5. Supports switching three angle units (RAD, DEG, GRAD), instead of applying it to the entire equation, we identify the unit of angle for each trigonometric function, so you get a clearer understanding of what the equation means. 6. Supports advanced calculations, including n!, ^, mod, √, log, ln, cube, square, cube root, y root, abs, ceil, random, floor and exponential functions etc. 7. Supports trigonometric functions (sin, cos, tan, asin, acos, atan) and hyperbolic functions (sinh, cosh, tanh, asinh, acosh, atanh). ● Unit Converter Features: 1. Supports multiple weight and measurement unit conversions - Volume, Length, Weight & Mass, Time, Energy, Area, Speed, Temperature, Power, Data, Pressure and Angle. 2. Supports currency exchange rate conversion (over 160 different currency units, and exchange rate data are hourly updated). 3. Supports 300+ Units. 4. Supports favorites function for quick conversions - allows setting 4 frequently used units for each conversion category. 5. We take the accuracy of conversion very seriously, and therefore, We had carefully verified the conversion values of each unit. Such as: when it comes to the electron-volt, many converters use different values, such as 1 eV = 1.60217656535E-19 J, 1 eV = 1.602176473E-19 J, and so on. However, we found that the CODATA 2018 recommended value (latest version) is 1 eV = 1.602176634E-19 J, so we use this latest recommended value. ● Multiple Languages: 1. English 2. Japanese 3. Chinese If you’re using an iPad or iPhone, you can enjoy the Calculator T application, hope it can assist you with your studies and work. If you find it useful, please consider supporting us by leaving a positive review and sharing your suggestions. Thanks :) ## Key features - Standard and scientific function modes - Extensive unit conversion (over 300 units) - History tape for last 100 records - Memory buttons (MS, M+, M-, MR, MC) - Copy/paste functionality for equations and results - Support for large number calculations and scientific notation - Currency exchange rate conversion ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/calculator-t/id6473983653/reviews.md ### 5/5 — Ads free and more *2023-12-13* Finally, I found some useful tool and it’s ads free. Please keep building new functions into it. 👍 ## Frequently asked questions about Calculator T ### Does Calculator T have ads? No, Calculator T is ad-free, providing an uninterrupted user experience for all its calculation and conversion features. ### What calculation precision does Calculator T support? Calculator T supports 32-bit input and calculation precision, allowing for integers or decimal places up to 32 digits. It also handles large number calculations and scientific notation up to 9.999E+99999999. ### How many historical records does Calculator T save? Calculator T automatically saves the most recent 100 historical records on your device, which are accessible the next time you open the app. ### What types of unit conversions are available in Calculator T? Calculator T supports over 300 units for conversion across categories like Volume, Length, Weight & Mass, Time, Energy, Area, Speed, Temperature, Power, Data, Pressure, and Angle. It also includes currency exchange rates for over 160 currencies. ### Can I customize Calculator T for frequent use? Yes, Calculator T allows you to set up to 4 frequently used units for each conversion category in the favorites function for quick access. ### What advanced math functions does Calculator T offer? Calculator T supports advanced calculations including factorials (up to 10000!), n!, mod, square roots, logarithms, trigonometric functions (sin, cos, tan), and hyperbolic functions. ### Is Calculator T available on devices other than iPhone? Calculator T is available for iPhone, iPad, and iPod devices, offering an optimized interface for iPad users. ### How often is Calculator T updated? Calculator T was last updated on December 13, 2023, with version 1.5.9. The developer frequently releases updates to enhance functionality and reliability. ## Version history (last 2 releases) ### 1.5.9 — 2023-12-13 Improved user experience and trigonometric function calculation accuracy. ### 1.5.8 — 2023-12-11 No release notes. ## Apps similar to Calculator T | App | Rating | Price | Category | | --- | --- | --- | --- | | [RPNu](https://appshunter.io/ios/app/rpnu/id1195709318) | — | Free | Utilities | | [The Calculo](https://appshunter.io/ios/app/the-calculo/id1449266399) | — | Free | Utilities | | [SoloEcho](https://appshunter.io/ios/app/soloecho/id6760158629) | — | Free | Utilities | | [Halcyon Calc](https://appshunter.io/ios/app/halcyon-calc/id327064659) | 4.9 (17) | $4.99 | Utilities | | [Scientific Calculator DES-38D](https://appshunter.io/ios/app/scientific-calculator-des-38d/id1379779839) | 4.3 (3) | $5.99 | Utilities | | [Unzip Mix](https://appshunter.io/ios/app/unzip-mix/id6747385570) | — | Free | Utilities | ## More apps by Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd - [小猴掌上伤寒论](https://appshunter.io/ios/app/id1524421742) All apps by Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd: https://appshunter.io/developer/1524258136 --- *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 2026-06-01.*