# Calculator-Math Toolbox — Scientific,Currency,Fractions > Basic and scientific calculator with history and theme options. (iPhone/iPad app by 明星 王.) - Source: https://appshunter.io/ios/app/calculator-math-toolbox/id1561702545 (this page in markdown: same URL + `.md`) - Developer: [明星 王](https://appshunter.io/developer/1872854947) - Category: Utilities - Price: Free with in-app purchases - Rating: 4.70/5 from 342 App Store ratings · 85 written reviews indexed - Age rating: 4+ - Requires: iOS 13 · 94 MB - Languages: Korean, Greek, Dutch, Danish, German (Germany), Russian, Romanian, Malay, Vietnamese, Bangla and 23 more - Released: 2021-04-10 - Data updated: 2026-08-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/calculator-math-toolbox/id1561702545/reviews.md ## What is Calculator? This calculator is an all-in-one calculator app designed to make everyday math faster, clearer, and more practical. From basic calculations to real-life tools, it brings standard calculation, scientific functions, fractions, currency conversion, unit conversion, number system conversion, mortgage calculation, income tax estimation, BMI calculation, formula templates, and more into one app. Features Standard Calculator Fast and clean input for everyday calculations. Scientific Calculator Supports powers, trigonometric functions, inverse trigonometric functions, and other common math functions. Fraction Calculator Work with fractions more naturally with clearer input and results. Editable Calculation Process Made a mistake while calculating? Edit the expression directly instead of starting over. History and Favorites Review past calculations, save important records, and recalculate anytime. Currency Converter Quickly convert across multiple currencies, precious metals, and digital assets. Unit Converter and Number System Converter Useful for study, work, and daily problem-solving. Mortgage Calculator Estimate monthly payments, interest, and total repayment more easily. Income Tax Calculator Check after-tax income with support for tax-related deductions and contributions. BMI Calculator A quick way to calculate body mass index. Formula Templates Use built-in formulas or create your own custom formulas for repeated calculations. Extra Chinese-focused Tools Supports uppercase amount conversion and relationship title lookup. Light and Dark Mode Choose the theme that feels best for you. This calculator is built for people who want more than a simple calculator. Whether you are studying, working, budgeting, comparing loans, checking taxes, or handling repeated formulas, it helps you finish calculations more efficiently in one place. ## Key features - Basic and scientific calculations - Trigonometric and inverse trigonometric functions - Mathematical functions (abs, ceil, floor, round) - Real-time calculation editing - Historical records management - Bright and dark theme switching ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Calculator Pro | $12.99 | one-time | ## What do users think of Calculator? Overall sentiment: positive **Pros** - 👍 Easy to use - 🚀 Powerful features - 💡 Useful history function - 🔒 No ads - 👍 Clean interface **Cons** - 🐛 Forced 5-star review for history function - 🐛 Odd language issue with copied calculations **Commonly reported bugs** - Forced 5-star review for history function - Odd language issue with copied calculations **Most requested features** - Dark mode option - More customization options ## Recent user reviews (10 of 85) All indexed reviews: https://appshunter.io/ios/app/calculator-math-toolbox/id1561702545/reviews.md ### 5/5 — Best All-in-One Calculator App! *2026-06-04, version 2.6* I’ve tried many calculator apps, but this one stands out for its clean design, smooth performance, and wide range of useful tools. It handles everything from basic calculations to scientific functions, fractions, currency conversion, unit conversion, and even mortgage calculations—all in one place. The interface is intuitive and easy to use, and I especially like the editable calculation process and history feature, which make correcting mistakes and reviewing previous calculations effortless. The app feels fast, reliable, and thoughtfully designed for both everyday users and professionals. If you’re looking for a powerful yet simple calculator app that covers almost every calculation need, this is an excellent choice. Highly recommended! ### 5/5 — Handy *2026-05-22, version 2.6* Great app with a built-in currency converter. It helped me easily calculate and compare unit prices during my trip. ### 5/5 — Seamless and efficient *2026-05-21, version 2.6* The fraction mode is incredibly well done. It saves me so much time because I don’t have to toggle between fractions and decimals anymore. It just works seamlessly. Best calculator app by far! ### 1/5 — Wtf *2026-03-14, version 1.2.3* I’ve been using this calculator for a while now, and as crazy as it seems, I did pay for the app cause it had features my basic calculator did not have. The last few days though, the entire layout has changed, and now there’s bs ads when I’m trying to work. I can’t read anything it says cause it’s all in Mandarin or something, but I did see an additional $12.99 option… do not get this app now, it’s not that great and they will change it on you with no warning ### 5/5 — Matt *2025-08-10, version 1.1.8* Cool ### 1/5 — % erro *2024-06-10, version 1.1.8* 1000 x 2,5% = 0 ### 1/5 — Hate Ads *2023-05-09, version 1.1.8* Will delete ### 5/5 — Gratis y sin anuncios *2023-03-09, version 1.1.8* Una maravilla para el ipad. Gratis, sin anuncios, se hace calculadora cientifica girando el ipad y tiene historial de operaciones. Incluso puedes añadir operaciones a favoritos. Increible. ### 5/5 — 電卓 *2022-12-13, version 1.1.5* 操作がしやすい ### 5/5 — very large display *2022-08-08, version 1.1.5* very large display with landscape view ## Frequently asked questions about Calculator ### What kind of calculations can this app perform? This app supports both basic arithmetic operations and advanced scientific calculations. It includes trigonometric functions like sin, cos, tan, and their inverses, as well as mathematical functions such as absolute value, rounding up, rounding down, and standard rounding. ### Can I edit my previous calculations? Yes, you can easily modify previous calculations. By clicking on a past calculation, you can edit the input and see the result update in real time. This feature allows for quick corrections and adjustments without re-entering everything. ### How does the history feature work? The app keeps a record of your past calculations, which you can view, save, delete, and even recalculate. This history management system helps you keep track of your work and easily access previous results for future reference. ### Is this app free to use? The app is free to download and use, but it does offer in-app purchases and may display advertisements. This allows for a free experience with optional enhancements or an ad-free option. ### What devices is this calculator compatible with? While specific device compatibility isn't detailed, it is designed as a mobile application, suggesting it's intended for smartphones and tablets. Users can switch between bright and dark themes to suit their viewing preferences. ## Version history (last 5 releases) ### 2.6 — 2026-05-08 fix some known issues ### 2.4 — 2026-04-18 Fixed the issue of the clear key lagging. ### 2.3 — 2026-04-11 1. Added recent results function to the panel 2. Fixed known bugs ### 2.2 — 2026-04-08 fixed some known issues ### 2.1 — 2026-04-08 This is a major upgrade, adding many useful features. ## Apps similar to Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,724,107) | Free | Utilities | | [Calculator HD Pro](https://appshunter.io/ios/app/calculator-hd-pro/id565023649) | 4.8 (11,086) | $9.99 | Utilities | | [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (50,790) | Free | Utilities | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (9,595) | Free | Utilities | | [Calculator Pro Elite](https://appshunter.io/ios/app/calculator-pro-elite/id782873188) | 4.8 (2,030) | $9.99 | Utilities | | [CALC Smart Calculator ±](https://appshunter.io/ios/app/calc-smart-calculator/id576675190) | 4.8 (2,364) | Free | Utilities | ## More apps by 明星 王 - [Calendar Pro:Events & Schedule](https://appshunter.io/ios/app/calendar-proevents-and-schedule/id6758858180) All apps by 明星 王: https://appshunter.io/developer/1872854947 --- *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 2026-08-01.*