# Calculator++ & Unit Converter > Advanced dual-mode scientific and basic calculator with history for iOS. (iPhone/iPad app by Devbox.) - Source: https://appshunter.io/ios/app/calculator-plus-plus-and-unit-converter/id1236110820 (this page in markdown: same URL + `.md`) - Developer: [Devbox](https://appshunter.io/developer/978950563) - Category: Education, Utilities - Price: Free - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: Arabic, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean and 7 more - Released: 2017-05-24 - Data updated: 2026-10-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculator-plus-plus-and-unit-converter/id1236110820/reviews.md ## What is Calculator++ & Unit Converter? Calculator++ is the all-in-one calculator: a beautiful everyday calculator, a full scientific mode, a unit & currency converter and 34 smart calculators, in one free app. BEAUTIFUL CALCULATOR • Large, easy-to-read display with full history • 21 themes: Charcoal, Aurora, Cobalt, Neon, Retro, Ocean, Paper and more • World Cup collection with the colours of 48 nations • Create your own theme: colours, key shapes and particles SCIENTIFIC MODE • sin, cos, tan and their inverses, in degrees or radians • Powers, roots, logarithms, factorial, π and e • Memory keys (mc, m+, m−, mr) and parentheses UNIT & CURRENCY CONVERTER • 12 categories: currency, length, weight, temperature, area, volume, speed, time, data and more • Live exchange rates for more than 50 currencies, also usable offline 34 SMART CALCULATORS • Finance: mortgage, loan, compound interest, retirement, savings, salary, budget, tip and discount • Everyday: percentage, date and age, hours, fuel, electric car, construction, GPA, Roman numerals • Math: fractions, statistics, quadratic equations, number bases, GCD/LCM, ratios, triangles, areas • Health: BMI, calories, body fat, water intake, heart rate zones, pregnancy and sleep cycles HANDY DETAILS • Tap a result in the history to reuse it • Long-press the display to copy the result • Your favourite calculators one tap away • Metric or imperial units, your currency, your settings Calculator++ is free and supported by ads. Premium themes can be unlocked for 24 hours by watching a short video. ## Key features - Basic and scientific calculation modes - Advanced scientific functions (trigonometry, logs, exponents) - Calculation history panel - Dark/Light mode support - Offline functionality - VoiceOver accessibility ## Is Calculator++ & Unit Converter safe? Not enough ratings yet to assess Calculator++ & Unit Converter. ## Is Calculator++ & Unit Converter legit? Calculator++ & Unit Converter appears to be a legitimate app. The AppsHunter Legitimacy Score for Calculator++ & Unit Converter is 90 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 18) All indexed reviews: https://appshunter.io/ios/app/calculator-plus-plus-and-unit-converter/id1236110820/reviews.md ### 1/5 — Remarks *2020-09-21* Better to add clear option Its showing wrong answer when using point ### 1/5 — App này lỗi - do not dowload *2019-10-16* Máy tính này tính cộng 1 loạt là sai hết . Đừng dow nhé , suýt mất tiền vì nó This calculator adds 1 series to the wrong. Do not dow, almost lose money for it ### 1/5 — It's a mess *2019-10-01* Just downloaded this app out of morbid curiosity. It really is as bad as people said. It has a weirdly specific problem. When multiplying a decimal as the first number by a number with one or more zeros, it treats the calculation as though there was a decimal before the first zero in the number. It also doesn't clear when you press another number after pressing equal. And it has that issue where the history buries your most recent calculations. ### 3/5 — Inaccurate *2019-06-16* When you use decimals, the calculator is mostly inaccurate. ### 1/5 — Not accurate *2019-06-11* Do not use. Calculator does not compute simple multiplication correctly. ### 1/5 — Doesn’t work *2019-05-30* I tried calculating 800*0.03 and it tells me the answer is 240. The correct answer is 24 ### 1/5 — Doesn’t work *2019-05-26* Would prefer t=a calculator that gives the correct answers to problems.. ### 2/5 — Wrong answers *2019-03-08* It doesn’t work if you use any decimals. Silly because accurate math is the only reason I need a calculator lol ### 3/5 — Comma *2019-02-19* Can you add commas to help vesibiity of numbers? ### 1/5 — If I could give less than 1 I would. *2019-02-15* Doesn’t know how to multiply when decimals are involved. So now it’s hard to trust that anything above average simple math it tries is correct. ## Frequently asked questions about Calculator++ & Unit Converter ### What mathematical functions does Calculator++® offer? Calculator++® provides both basic arithmetic operations and advanced scientific functions. These include trigonometry (sin, cos, tan), logarithms (ln, log10, log2), exponents (e^x, 10^x), roots, powers, factorials, and combinations. ### Is Calculator++® suitable for offline use? Yes, Calculator++® is designed to work offline, allowing you to perform calculations without an internet connection. This makes it a reliable tool for students and professionals on the go. ### Does Calculator++® have a history feature? Yes, Calculator++® includes a calculation history panel that saves all your computations. You can review past calculations, repeat operations, share results, and even export them. ### What devices is Calculator++® compatible with? Calculator++® is optimized for iOS and is compatible with iPhones and iPads. It is also VoiceOver accessible, making it usable for individuals with visual impairments. ### How often is Calculator++® updated? The latest version of Calculator++® is 2.1, and it was last updated on January 2, 2026. While specific update frequency isn't detailed, the app is actively maintained. ### What is the age rating for Calculator++®? Calculator++® has an age rating of 4+, indicating it is suitable for users of all ages. The app is designed with a professional and clean interface. ### Does Calculator++® offer different pricing tiers? No, Calculator++® is available for free download and use. There are no in-app purchases or subscription models mentioned for this application. ### Does Calculator++® have ads? No, Calculator++® is ad-free. The application is designed to provide a seamless and uninterrupted user experience for all its mathematical functions. ## Version history (last 4 releases) ### 3.0 — 2026-10-13 Calculator++ 3.0, completely redesigned! • 21 themes: Aurora, Cobalt, Neon, Retro, the World Cup collection and your own custom theme • Scientific mode with degrees/radians, memory and history • Unit & currency converter with live exchange rates • 34 calculators: mortgage, loan, BMI, tip, percentage, dates, GPA and more • Available in 17 languages ### 2.1 — 2026-01-02 Maintenance update for improved stability and performance. ### 2.0 — 2025-12-30 Dual Mode Calculator: Instant switching between Basic and Scientific modes Enhanced History System: Repeat calculations directly from history Improved Scientific Calculator: More functions and better organization Custom Button Layouts: Optimized for both Basic and Scientific modes ### 1.0 — 2017-05-24 This app has been updated by Apple to display the Apple Watch app icon. ## More apps by Devbox - [USSD Tunisie](https://appshunter.io/ios/app/ussd-tunisie/id978950564) - [Msefer](https://appshunter.io/ios/app/msefer/id998181210) - [Tunisia Radio](https://appshunter.io/ios/app/tunisia-radio/id1462875470) - [CamScan: PDF Document Scanner](https://appshunter.io/ios/app/camscan-pdf-document-scanner/id1546873267) - [PixArt AI: AI Image Generator](https://appshunter.io/ios/app/pixart-ai-ai-image-generator/id6749236127) All apps by Devbox: https://appshunter.io/developer/978950563 --- *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 2026-10-19.*