# Calculator 3.0 — Calculations Simplified > Simplified calculator with themes for Apple Watch, iPhone, and iPad. (iPhone/iPad app by Spencer Brown.) - Source: https://appshunter.io/ios/app/calculator-30/id382376539 (this page in markdown: same URL + `.md`) - Developer: [Spencer Brown](https://appshunter.io/developer/307337672) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.70/5 from 3,540 App Store ratings · 187 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 26 MB - Languages: American English - Released: 2010-08-03 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculator-30/id382376539/reviews.md ## What is Calculator 3.0? Welcome to Calculator 3.0 for Apple Watch, iPhone, iPad, and iMessage! Frustrated with the ugly and complicated Calculators for iPad, Apple Watch, and Apple TV — Calculator 3.0 was created to provide a better simpler choice....all for Free. The "Original Calculator with Themes for iPad and Apple Watch" is back — Rewritten and redesigned for Apple Watch, iPhone, iPad, and iMessage with Bolder Fonts, iPad Multitasking, Native Watch Support with Complications, and Snappier Performance. Apple Watch The Apple Watch Calculator with Colored Watch Band Themes! Designed for the mobile mathematician with a Scientific Calculator, Tip Calculator, Unit Converter, a Tally Counter, Twenty-Six personalized colored themes for your watch band or style, and... • Force Press (firmly press) on the Calculator to changes themes • Big and bold fonts for readability • Haptic feedback upon button presses • Watch Face Complication support for quick access • Tip Calculator with Digital Crown support • Conversion Calculator with Length, Weight, Volume, Area, and Time units • Counter, Tap to increase or use the Digital Crown for faster input, force press for options • Settings, with option to enable Counter number modular face complication support • Autorotation to Share, when enabled the app rotates when rotating your wrist to show a calculation, tip percentage, unit conversion, or tally number to another person iPhone and iPad • Simple bubble dark interface with Scientific Calculator • iPad Multitasking Support (Landscape and Portrait) • Haptic feedback upon button presses (iPhone 7 and greater) • Gesture Controls, Swipe Up for "Light Mode", Swipe Down for "Dark Mode", Swipe Left to clear the displayed number • 3D Touch Icon — Copy Last Number (iPhone 6s and greater) • Bolder fonts • Tap number to copy • "Drag and Drop" support for iPad, perfect for iPad Multitasking - Tap and hold on the displayed number to select for dragging as text into another app - Drag and Drop text numbers from other apps (Mail, Safari, Notes, etc) over the displayed number area to include the number in the current input iMessage app • Simple Calculator • Tap number to paste into message thread ## Key features - Customizable themes - Scientific calculator - Unit converter - Tip calculator - Tally counter - iPad multitasking support - Apple Watch complications ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | a Nice Tip | $0.99 | one-time | | a Generous Tip | $2.99 | one-time | | an Amazing Tip! | $4.99 | one-time | ## What do users think of Calculator 3.0? Overall sentiment: positive **Pros** - 👍 Easy to use - 🚀 Smooth performance - 💡 Useful features (tip calculator, unit converter, tally counter) - 🎨 Customizable colors/themes - 🔍 Clear and legible display **Cons** - 🐛 Memory function issues - 🔊 Loud button click sounds - 🔍 Cropped display on iPad - 🔍 Blurry graphics **Commonly reported bugs** - Incorrect calculation results - Landscape mode issues - Crashes after updates **Most requested features** - Add memory function indicator - Allow disabling of button click sounds - Optimize layout for iPad - Improve graphics quality ## Recent user reviews (10 of 187) All indexed reviews: https://appshunter.io/ios/app/calculator-30/id382376539/reviews.md ### 2/5 — FUGGLER *2026-06-11, version 3.32* Get ### 5/5 — Good *2026-05-21, version 3.32* It was pretty good just needs more features ### 5/5 — Ease of use *2026-04-07, version 3.32* This app I use daily. It has ease of use and very versatile. ### 4/5 — Ansh *2025-11-26, version 3.32* Rajpu ### 3/5 — ok but not with apple keyboards *2025-11-16, version 3.32* apple keyboard does not link. to calculator???? ### 5/5 — Great calculator *2025-05-31, version 3.32* Thus is a great calculator for my phone. It is very easy to use. ### 4/5 — Calculator *2025-05-21, version 3.32* Remembering the calculator was funny if in school in the back of the book 2+2=4 in blu lingo yellow I think 2+2=5 for beauty deals in my life listening to music I watched Avril Lavigne in one music video run/walk angrily after someone and thought she reached a higher existence or location as I thought it was the 2+2=5 model deal I still could be mistaken as a model is still a guardian of clothes or other valuable items at the mall if a human is to evolve I wonder if it would be more angelic or something else ### 5/5 — Best calculator I've ever used *2025-05-04, version 3.22* 5 stars ### 5/5 — Real good! *2025-03-12, version 3.32* Easy to read with dark background. ### 5/5 — What a relief *2025-02-11, version 3.32* After Apple’s most recent software update, I uninstalled their horrendous calculator and installed this one instead. So much better! It actually has a clear button… ## Frequently asked questions about Calculator 3.0 ### What does Calculator 3.0 do? Calculator 3.0 is a free application designed to provide a simpler and more intuitive calculation experience across Apple Watch, iPhone, and iPad. It offers a range of features including a scientific calculator, tip calculator, unit converter, and a tally counter, all with a redesigned interface and customizable themes. ### What are the key features of Calculator 3.0? Key features include a scientific calculator, tip calculator with digital crown support on Apple Watch, a comprehensive unit converter for various measurements, a tally counter, and twenty-six personalized themes for Apple Watch. The app also boasts bold fonts, haptic feedback, iPad multitasking support, and gesture controls for easy navigation. ### Is Calculator 3.0 free to use? Yes, Calculator 3.0 is completely free to use. The description explicitly states that it was created to provide a better, simpler choice and is available 'all for Free'. ### What Apple devices is Calculator 3.0 compatible with? Calculator 3.0 is designed for a range of Apple devices, including Apple Watch, iPhone, iPad, and iMessage. It offers native support and optimized features for each platform, including complications for Apple Watch and multitasking for iPad. ### How can I use Calculator 3.0 for everyday tasks? You can use Calculator 3.0 for everyday tasks such as quickly calculating tips, converting units for recipes or travel, keeping track of scores with the tally counter, or performing complex scientific calculations. Its intuitive design and quick access features make it suitable for a variety of needs on the go. ## Version history (last 5 releases) ### 3.32 — 2018-11-08 Updated interface for iPad Pro 11 inch ### 3.31 — 2018-10-04 Series 4 Apple Watch Updates! • Supports the new Infograph and Infograph Modular clock faces • See the current calculator number on the Infograph corner or center bezel complications • See the current calculator number or counter number on the Infograph Modular watch face • Larger buttons and inputs for an even easier use iPhone XS Max • Updates the UI for the larger device ### 3.30 — 2018-10-03 Series 4 Apple Watch Updates! • Supports the new Infograph and Infograph Modular clock faces • See the current calculator number on the Infograph corner or center bezel complications • See the current calculator number or counter number on the Infograph Modular watch face • Larger buttons and inputs for an even easier use iPhone XS Max • Updates the UI for the larger device ### 3.22 — 2017-12-19 • Minor UI Tweaks • Updated App Store screenshots for iPhone X Happy Holidays and Calculating :) ### 3.21 — 2017-11-01 - Tweaked Interface for the wonderful amazing spectacular iPhone X !! - On Apple Watch the "Tip Calc" can now be enabled as the default view from settings in the Watch app (swipe right on the main calculator view) ## Apps similar to Calculator 3.0 | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (51,312) | Free | Utilities | | [Calculator - Pad Edition](https://appshunter.io/ios/app/calculator-pad-edition/id685860762) | 4.7 (353,158) | Free | Utilities | | [Calculator⁼](https://appshunter.io/ios/app/calculator/id487127942) | 4.6 (358,262) | Free | Utilities | | [Calculator·](https://appshunter.io/ios/app/calculator/id554836784) | 4.9 (34,361) | Free | Utilities | | [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,876) | Free | Utilities | | [Calc Pro HD – iPad Calculator](https://appshunter.io/ios/app/calc-pro-hd-ipad-calculator/id457004119) | 4.7 (1,445) | Free | Utilities | ## More apps by Spencer Brown - [Power Nap with Health Sync](https://appshunter.io/ios/app/power-nap-with-health-sync/id982370930) - [Sleep Tracker - Sleep Pulse 3](https://appshunter.io/ios/app/sleep-tracker-sleep-pulse-3/id1005468883) - [Sleep Talk - Sound Recorder](https://appshunter.io/ios/app/sleep-talk-sound-recorder/id1269275755) - [Up High - Barometric Altimeter](https://appshunter.io/ios/app/up-high-barometric-altimeter/id1269281011) - [Sleep Tracker for Watch](https://appshunter.io/ios/app/sleep-tracker-for-watch/id1344359757) All apps by Spencer Brown: https://appshunter.io/developer/307337672 ## Related topics [apple watch calculator time](https://appshunter.io/ios/topics/apple-watch-calculator-time) · [calculator frog stickers](https://appshunter.io/ios/topics/calculator-frog-stickers) · [simple calculator for apple watch](https://appshunter.io/ios/topics/simple-calculator-for-apple-watch) · [apple watch calculator math](https://appshunter.io/ios/topics/apple-watch-calculator-math) · [billard aiming calculator pro](https://appshunter.io/ios/topics/billard-aiming-calculator-pro) · [the shelly company calculator](https://appshunter.io/ios/topics/the-shelly-company-calculator) · [caculator for apple watch](https://appshunter.io/ios/topics/caculator-for-apple-watch) · [harcourts pinnacle calculator](https://appshunter.io/ios/topics/harcourts-pinnacle-calculator) · [book thickness calculator](https://appshunter.io/ios/topics/book-thickness-calculator) · [calculator for apple watch](https://appshunter.io/ios/topics/calculator-for-apple-watch) · [camel value calculator](https://appshunter.io/ios/topics/camel-value-calculator) · [bfm calculator](https://appshunter.io/ios/topics/bfm-calculator) · [pth calculator](https://appshunter.io/ios/topics/pth-calculator) · [ipocket calculator](https://appshunter.io/ios/topics/ipocket-calculator) · [mcdantim easyblend calculator](https://appshunter.io/ios/topics/mcdantim-easyblend-calculator) · [sts risk calculator](https://appshunter.io/ios/topics/sts-risk-calculator) · [product calculator](https://appshunter.io/ios/topics/product-calculator) · [drphos science calculator](https://appshunter.io/ios/topics/drphos-science-calculator) · [time calculator driving](https://appshunter.io/ios/topics/time-calculator-driving) · [cmm stair rail calculator](https://appshunter.io/ios/topics/cmm-stair-rail-calculator) --- *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.*