# 3Calc — Triple Efficiency > Three independent calculators with separate histories for efficient multi-tasking. (iPhone/iPad app by Tongze Mao.) - Source: https://appshunter.io/ios/app/3calc/id6743180803 (this page in markdown: same URL + `.md`) - Developer: [Tongze Mao](https://appshunter.io/developer/1801828453) - Category: Utilities, Productivity - Price: $0.99 - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 0 MB - Languages: American English, Chinese (Simplified, China) - Released: 2025-03-13 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/3calc/id6743180803/reviews.md ## What is 3Calc? Whether you’re handling personal finance, restaurant tips, or just everyday math, ThreeCalc’s three independent calculators and dedicated histories let you manage multiple calculations without losing track of any results. Simply swipe left or right to switch calculators, tap any history entry to reuse its result, or long-press for quick copy/delete actions. - User Stories - “I often need to juggle multiple calculations at once.” With ThreeCalc’s triple setup, each calculator retains its own separate history, so you can keep personal, work, and random calculations neatly apart—no more mixed-up results. “I hate retyping numbers I already calculated.” In ThreeCalc, just tap a past result in the history to insert it into your new expression. It’s a huge time-saver, and you can always long-press to copy or delete if needed. - Key Features - Three Independent Calculators: Seamlessly swipe among them—each with its own history log. Scrollable & Separated History: Quickly review previous calculations; no cross-contamination. One-Tap Reuse: Tap any old result to add it into your current calculation. Long-Press Actions: Copy an entire expression to the clipboard or delete entries with ease. Persistent Data: All histories and settings are automatically saved, so you’ll never lose your work. - I Value Your Feedback! - I’m a solo developer who built ThreeCalc from scratch, fueled by my passion for creating truly useful apps. I’ll be updating this app regularly and would love to know what you think! Please consider leaving a rating or review—your support means the world to me. Thank you so much! :) ## Key features - Three independent calculators - Separate history logs - One-tap result reuse - Long-press copy/delete - Persistent data saving ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/3calc/id6743180803/reviews.md ### 5/5 — Calculator with great history management *2025-03-28* There are 3 separate calculators with their own separate history. You can add your previous output to your current calculation with a single click. Definitely one of the better calculator apps I have seen. ### 5/5 — Better Calculator *2025-03-20* simple and reliable, it helps a lot when i was working on group trip expenses. definitely recommend ## Frequently asked questions about 3Calc ### What is 3Calc? 3Calc is a utility app that provides three independent calculators, each with its own dedicated history. This allows users to manage multiple calculations simultaneously without mixing up results. ### How does 3Calc help with complex calculations? You can easily switch between the three calculators by swiping left or right. Each calculator maintains a separate history, and you can tap any past result to insert it into your current expression, saving you time from retyping numbers. ### Is 3Calc free to use? No, 3Calc is a paid application. It costs $0.99 and does not contain advertisements or in-app purchases. ### Does 3Calc have ads? No, 3Calc is ad-free. As a paid application, it provides an uninterrupted user experience without advertisements. ### What devices does 3Calc support? 3Calc is available for iPhone, iPad, and iPod touch devices. It is designed to work across Apple's mobile ecosystem. ### How often is 3Calc updated? The app was last updated on April 1, 2025, indicating regular updates from the solo developer who is passionate about improving the app based on user feedback. ### What is the age rating for 3Calc? 3Calc has an age rating of 4+, making it suitable for a wide range of users, including children and adults, for basic to intermediate calculation needs. ### Can I copy or delete previous calculations in 3Calc? Yes, 3Calc allows you to long-press on any history entry to easily copy the entire expression to your clipboard or delete it if it's no longer needed. ## Version history (last 5 releases) ### 1.0.4 — 2025-04-01 - Major under-the-hood improvements! - Completely revamped the core algorithm to make everything faster and more responsive. - Significantly optimized the backspace functionality — it's now smoother, smarter, and more reliable. As a solo developer, I pour my heart into every update. Thank you for supporting this journey — your feedback truly drives progress! ### 1.0.3 — 2025-03-28 - Enhanced visuals for iPad users, ensuring a smoother browsing experience. I'm always working to provide you with the best experience possible. Thanks for your continued support! ### 1.0.2 — 2025-03-26 - Improved app visuals and presentation for a better user experience. I continuously strive to enhance your experience. Thank you for your support and feedback! ### 1.0.1 — 2025-03-17 - In this update, I've enhanced the responsiveness of button interactions, making the app feel more fluid and natural. ### 1.0.0 — 2025-03-13 No release notes. ## More apps by Tongze Mao - [Flipperly](https://appshunter.io/ios/app/flipperly/id6743181103) - [WayLater](https://appshunter.io/ios/app/waylater/id6743181268) - [DoneTodo Task](https://appshunter.io/ios/app/donetodo-task/id6743181289) - [SparkDays](https://appshunter.io/ios/app/sparkdays/id6743457838) - [FontMate](https://appshunter.io/ios/app/fontmate/id6743818835) All apps by Tongze Mao: https://appshunter.io/developer/1801828453 --- *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 2026-06-10.*