# Significant Figures Calculator Pro > Calculator for performing and learning significant figures calculations with explanations. (iPhone/iPad app by Ajay Penmatcha.) - Source: https://appshunter.io/ios/app/significant-figures-calculator-pro/id918167029 (this page in markdown: same URL + `.md`) - Developer: [Ajay Penmatcha](https://appshunter.io/developer/823193715) - Category: Education, Productivity - Price: Free - Rating: 4.70/5 from 35 App Store ratings · 20 written reviews indexed - Age rating: 4+ - Requires: iOS 7.0 · 1 MB - Languages: English - Released: 2014-10-15 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/significant-figures-calculator-pro/id918167029/reviews.md ## What is Significant Figures Calculator Pro? =========FREE FOR A LIMITED TIME============ ============DOWNLOAD NOW=============== If you are in a science class, you probably have learned about significant digits. You also probably know that those pesky digits are hard to keep track of. Mistakes are easy to make, so use this Significant Digits Calculator to do the work for you. The calculator also features a rules sheet and custom explanations for problems you do, an extremely valuable reference for any science student. Uses - DO CALCULATIONS with significant digits - CHECK YOU WORK with the calculator - LEARN significant digits with built in rules and custom explanations for every problem you do Features - NO Advertisements to hinder your PRODUCTIVITY - GREAT, FRIENDLY user interface - Fully functioning SIGNIFICANT FIGURES INTELLIGENT calculator - Add, subtract, multiply, and divide - Calculates number of significant figures - Includes significant figures rules - EXPLANATIONS for every problem you do - Ability to enter significant zero's ## Key features - Perform calculations with significant digits - Check your work - Learn significant digits with built-in rules - Custom explanations for every problem - No advertisements - User-friendly interface ## Recent user reviews (10 of 20) All indexed reviews: https://appshunter.io/ios/app/significant-figures-calculator-pro/id918167029/reviews.md ### 1/5 — Does not work in all situations *2019-10-23* Can give incorrect answers - I would not trust. ### 5/5 — Very Good App *2017-08-04, version 1.0* I use this app for a variety of ways. Works like a charm. ### 5/5 — Great app *2016-05-25, version 1.0* I LOVE this app because not only does it give the answer but actually teaches you why it came to that conclusion. ### 1/5 — No infinite sigfigs *2016-04-22, version 1.0* This app has no ability to mark an occasional input to "be infinite sigfigs." Without this functionality many chemistry calculations come out all wrong. It's very common to to have to divide by a number (say 1/3 or 1/2) with 100% precision, like stoichometry conversions, and the app screws up by narrowing the answers sigfig to 1! Just add an infinite sigfig button and your app will rock! ### 5/5 — It works very well! *2015-01-15, version 1.0* This is a useful calculator that will even explain its calculations. ### 5/5 — Thank uuu! *2014-12-15, version 1.0* Good app and really helped me study for my tests and complete worksheets faster ### 5/5 — Best SiFig Tool Ever *2014-11-10, version 1.0* I have a sig fig quiz tomorrow and our teacher either stinks or I stink as a student (highly unlikely but still possible) and this app is amazing for it. It teaches you and tells u why the answer is the answer!!! Thanks a ton to the developer!!! Not a single flaw. ### 4/5 — Good idea, useful app *2014-11-04, version 1.0* This is a good idea for a calculator app. I teach university chemistry and see how useful this might be for students learning about sig. figs. A few caveats, however. Sig. Figs. is an simplistic approach to propagation of errors. If you’re serious about sig. figs., then this calculator may give you wrong answers. That is because it does not — and I see no easy solution in a simple calculator app— include the covariance between numbers. Ignoring covariance will give you less significant figures than you actually have. As a chemistry professor, what I would like is a calculator that understand units and dimensional analysis. That would be a great app! ### 5/5 — 0 love *2014-10-23, version 1.0* I, as a number 0 enthusiast, have always felt that 0 never got it's due. Other calculator apps would not let me put importance on the 0. But this app. This app has renewed my faith in numerals. The 0 has once more become significant! It shall no longer be overlooked in calculations! Hail the mighty writer of this app because He... Is... My HERO. ### 5/5 — Awesome! Science salvation! *2014-10-22, version 1.0* This app is great! Not only does it do the sigdig calculation, it also helps you learn it by explaining the rules! Great interface, easy to use. This app is light years ahead of its competition! Hurry and download it while it's free! ## Frequently asked questions about Significant Figures Calculator Pro ### How does Significant Figures Calculator Pro help with learning? Significant Figures Calculator Pro provides built-in rules for significant digits and offers custom explanations for every calculation performed. This dual approach allows users to not only get the correct answer but also understand the reasoning behind it. ### What types of calculations can Significant Figures Calculator Pro perform? Significant Figures Calculator Pro can perform basic arithmetic operations including addition, subtraction, multiplication, and division, all while correctly handling significant figures. ### Is Significant Figures Calculator Pro suitable for beginners? Yes, the app is designed to be user-friendly and includes a rules sheet and custom explanations, making it an excellent tool for students just learning about significant digits. ### Does Significant Figures Calculator Pro have ads? No, the app is advertised as having no advertisements to hinder user productivity, providing a clean and focused experience. ### What devices is Significant Figures Calculator Pro available on? Significant Figures Calculator Pro is available for iPhone and iPod devices. ### How often is Significant Figures Calculator Pro updated? The application's latest version is 1.0, and it was last updated on October 15, 2014. There have been no updates since its initial release. ### What is the age rating for Significant Figures Calculator Pro? Significant Figures Calculator Pro has an age rating of 4+, making it suitable for a wide range of young learners and students. ### Can I check my own work with Significant Figures Calculator Pro? Absolutely. You can use the calculator to perform calculations and then compare the results with your own work, helping you identify any mistakes in your understanding or application of significant figures rules. ## Version history (last 1 release) ### 1.0 — 2014-10-15 This app has been updated by Apple to display the Apple Watch app icon. ## Apps similar to Significant Figures Calculator Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Physics Toolkit](https://appshunter.io/ios/app/physics-toolkit/id1353781994) | 4.6 (49) | Free | Education | | [Sig Fig Tutor](https://appshunter.io/ios/app/sig-fig-tutor/id1460598554) | 4.8 (31) | Free | Education | | [Chemical Balancer & Elements](https://appshunter.io/ios/app/chemical-balancer-and-elements/id1567581573) | 4.2 (15) | Free | Education | | [CMM \| Molar Mass Calculator](https://appshunter.io/ios/app/cmm-molar-mass-calculator/id401529325) | 4.8 (202) | Free | Education | | [Significant Figures Solver](https://appshunter.io/ios/app/significant-figures-solver/id1620904373) | — | Free | Education | | [Aktiv Learning](https://appshunter.io/ios/app/aktiv-learning/id1128486439) | 3.2 (183) | Free | Education | ## More apps by Ajay Penmatcha - [My School Planner](https://appshunter.io/ios/app/my-school-planner/id823193712) All apps by Ajay Penmatcha: https://appshunter.io/developer/823193715 --- *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.*