# Calculator Smart — Scientific & Standard Calc > Powerful scientific and standard calculator for iPhone, iPad, and Apple Watch. (iPhone/iPad app by Miroslav Otsedarski.) - Source: https://appshunter.io/ios/app/calculator-smart/id698030968 (this page in markdown: same URL + `.md`) - Developer: [Miroslav Otsedarski](https://appshunter.io/developer/450091139) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 494 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 24 MB - Languages: American English - Released: 2013-11-22 - Data updated: 2026-08-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/calculator-smart/id698030968/reviews.md ## What is Calculator Smart? Calculator Smart is the most powerful and precise calculator for iPhone, iPad, and Apple Watch — built for everyday math and advanced scientific computations alike. Whether you need a quick percentage or a complex nested equation with parentheses, Calculator Smart handles it all with a clean, modern interface and lightning-fast big buttons. Scientific & Standard Modes • 30+ scientific operations including trigonometry, logarithms, and more • Degrees and Radians support • Parentheses and nested parentheses for complex equations • Output in Decimal or Scientific Notation (mantissa/exponent) Intuitive Input • Slide to delete wrong digits instantly • Double-tap or long-press to Copy & Paste results • Full External Keyboard support (Bluetooth & Smart Keyboard) • Three-digit grouping with locale-specific decimal and thousands separators Cross-Platform & Widgets • Apple Watch app with Complication shortcuts • Lock Screen Widget — calculate without unlocking your device • Messages Extension — share results directly in conversations • Multitasking: Slide Over and Split View (iPad) Personalization • Colorful skins to match your style • Custom App Icons that match your chosen skin • Button sound feedback for a satisfying tactile feel Universal Purchase — buy once, use on all your Apple devices. Download Calculator Smart for FREE today! ## Key features - 30+ scientific operations - Degrees and Radians support - Parentheses and nested equations - Intuitive input with slide-to-delete - Copy & Paste results - Apple Watch app and Lock Screen Widget - Colorful skins and custom icons ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Colorful Skins and Remove Ads | $1.99 | one-time | | Colorful Skins | $1.99 | one-time | | Colorful Skins for Mac app | $1.99 | one-time | ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/calculator-smart/id698030968/reviews.md ### 5/5 — Calculatrice *2024-04-30, version 1.7.0* Elle est trop pratique !!!!!!!! ### 5/5 — I like the caululater *2024-02-06* I rate it 5 stars because it’s fells different from a normal Apple caululater ### 1/5 — WRONG ANSWERS!!!!!!!!!!!!!! *2023-03-18* THEY GAVE ME THE WRONG ANSWER!!!! ### 1/5 — Bad Math??!!? *2022-09-20* Unfortunately, this calculator can’t do math… and as that’s the only thing I need it to do… needless to say, it didn’t work out. 617.14 minus 602.45 does not equal 14.689999999 Close, but not close enough. ### 2/5 — Works Great, But the updates! *2022-07-30* I cant tell if this app updates more than the news or what! Seems like theres always an update daily, and it's the same version every day! What gives? ### 2/5 — Enter key doent work - Not for MAC *2022-06-14* How did the app developers miss the very basic feature of enter key while working with Mac keyboard. May be designed only for mobile devices ### 3/5 — Rounding issues on M1 Mac at least *2022-04-21* I tried a simple calculation: 177 - 170.21 and the result was 6.789999999 -- the correct answer should've been 6.79. I can figure it out, but iti's more difficult than it should be. I might be better off typing my math problem into google search box which gives the right answer. ### 3/5 — It works but... *2021-07-12* It does the calculations as expected, but I was quite dissapointed to find that there is no Back button for those of us who make mistakes entering data. ### 2/5 — some expected keys do not work *2021-05-03* I would expect ^ should work as power, but it is not recognized. Just this fact alone makes it difficult for me to use this calculator. ### 3/5 — It's just okay *2021-04-29* This is just an okay calculator. It works fine, and you can use your computer keyboard to enter numbers etc... Having no preferences is negative, I mean really give the user some preferences to get full potential from this app., even the free version should have preferences. Lastly, were's the tape/history/paper strip, so the user can see the list of numbers/calculations entered and done, again, even a free version should at least have this feature. ## Frequently asked questions about Calculator Smart ### What does Calculator Smart do? Calculator Smart is a versatile calculator app for iPhone, iPad, and Apple Watch. It handles both everyday math and complex scientific computations with a clean interface and intuitive features like slide-to-delete and copy-paste. ### What are the key features of Calculator Smart? Key features include over 30 scientific operations, support for degrees and radians, handling of complex equations with parentheses, intuitive input methods, Apple Watch integration, Lock Screen widgets, and personalization options like colorful skins and custom icons. ### Is Calculator Smart free to use? The app is free to download and use, offering a free experience with the option for in-app purchases. This allows users to access all features and personalize their experience. ### What devices is Calculator Smart compatible with? Calculator Smart is designed for Apple devices, including iPhone, iPad, and Apple Watch. It supports features like Multitasking on iPad and Complication shortcuts on Apple Watch. ### How can I use Calculator Smart for complex calculations? You can input complex equations with parentheses and nested parentheses directly into the app. It supports over 30 scientific operations, including trigonometry and logarithms, and can output results in decimal or scientific notation. ## Version history (last 5 releases) ### 1.7.2 — 2026-03-16 Thanks for using Calculator Smart! • Support for the latest iPhone, iPad and Apple Watch models • Optimized for iOS 26.3, iPadOS 26.3 and watchOS 26.3 • Stability improvements and bug fixes ### 1.7.0 — 2024-03-18 Calculator Smart just got better! We update the app regularly to make it better and more reliable for you. • Optimized for iOS 17.4 and watchOS 10.4 ### 1.6.8 — 2023-05-26 Calculator Smart just got better! We update the app regularly to make it better and more reliable for you. • Bug fixes ### 1.6.7 — 2023-05-20 Calculator Smart just got better! We update the app regularly to make it better and more reliable for you. • Bug fixes ### 1.6.6 — 2023-01-25 Calculator Smart just got better! We update the app regularly to make it better and more reliable for you. • Optimized for iOS 16.3 and watchOS 9.3 • Support for latest devices - iPhone 14 Pro, iPhone 14 Pro Max, iPhone 14, iPhone 14 Plus, Apple Watch Ultra, Apple Watch Series 8 ## Apps similar to Calculator Smart | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities | | [Calculator Pro Lite](https://appshunter.io/ios/app/calculator-pro-lite/id782873366) | 4.6 (3,066) | Free | Utilities | | [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (51,312) | Free | Utilities | | [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,794) | Free | Utilities | | [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,876) | Free | Utilities | | [Basic Calculator: Classic Calc](https://appshunter.io/ios/app/basic-calculator-classic-calc/id430271248) | 4.8 (3,192) | Free | Utilities | ## More apps by Miroslav Otsedarski - [Tricky Gems](https://appshunter.io/ios/app/tricky-gems/id476333014) - [Tiny Notes](https://appshunter.io/ios/app/tiny-notes/id861213020) - [Outwalk](https://appshunter.io/ios/app/outwalk/id1006583272) - [Yamb: Five Dice](https://appshunter.io/ios/app/yamb-five-dice/id1186166073) - [MyGrocery - Shopping List](https://appshunter.io/ios/app/mygrocery-shopping-list/id1514353107) All apps by Miroslav Otsedarski: https://appshunter.io/developer/450091139 ## Related topics [a complex calc](https://appshunter.io/ios/topics/a-complex-calc) --- *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 2026-08-29.*