# Is it Prime? > Checks if a given number is prime. (iPhone/iPad app by Wismar.) - Source: https://appshunter.io/ios/app/is-it-prime/id326095651 (this page in markdown: same URL + `.md`) - Developer: [Wismar](https://appshunter.io/developer/307757950) - Category: Utilities, Education - Price: Free - Rating: 3.20/5 from 5 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 1 MB - Languages: American English - Released: 2009-08-11 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/is-it-prime/id326095651/reviews.md ## What is Is it Prime?? This application serves only one function - to satisfy your curiosity when you wonder whether a given number is prime or not. You put in the number, it says yes or no. Really, that's all it does. ## Key features - Prime number identification - Simple number input - Instant yes/no results ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/is-it-prime/id326095651/reviews.md ### 5/5 — Good *2025-03-15, version 2.0.29* This does exactly what it says on the tin! No ads,or add ons, simple and clean ### 5/5 — Love this app! *2019-05-31* I got this app years ago and I have never had a problem with it. I am surprised there aren’t more users. I teach math and have used it more than once for really large numbers. ### 1/5 — Seems broken *2018-04-15* Try putting in 3141592653 ### 4/5 — Yay! *2017-11-18* So happy to see an update to this handy little app. Helping my kids with math homework has been way easier since I downloaded it years ago. Thanks! ### 1/5 — Wha? *2014-04-16* I enter a number, it ignores it and tells me another number is prime. Useless. ### 5/5 — I Love It! *2012-12-11* I have a little obsession with prime numbers, so this app is great fun for me. Back in high school (in 1975) I was in the first computer programming class in the LAUSD. I wrote a little program to give me a list of prime numbers. The program would be run, at night, on the school districts IBM 360, and took forever (many minutes) just to calculate a number as small 103. This app handles much much larger numbers with ease, in fractions of a second. I love it! ### 5/5 — Great *2012-05-11* Great app! My only complaint is that when a number is composite, the app doesn't give you its prime factorization. For example, it'll say 12 = 2*6 instead of 12 = 2*2*3 ### 5/5 — Works good *2012-04-10* Very awesome I needed it for homework and it helped me!!! 5Stars!!! ### 3/5 — Good *2011-12-09* It would be awesome if it could tell u its factors to ### 5/5 — This app is worth it! *2010-08-31* This app shows how such a simple app can serve such an important purpose in your life. I rarely give out 5 star ratings but this app had simplicity and also acts as a math guide. Saying that I think this app is creative and worth the extra space on your iPhone/ iPod touch I also think that This app will be helpful to many people. This app is very enjoyable but sadly I would not pay $0.99 for this easy, creative, helpful application. I hope this review helps all, Senorpantz21 ## Frequently asked questions about Is it Prime? ### What is the primary function of Is it Prime? Is it Prime's sole purpose is to tell you whether a number you input is a prime number or not. It offers a simple 'yes' or 'no' answer. ### What devices does Is it Prime support? Is it Prime is available on iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users. ### How often is Is it Prime updated? The latest version of Is it Prime is 2.0.29, and it was last updated on January 14, 2022. This indicates a relatively infrequent update schedule. ### What is the age rating for Is it Prime? Is it Prime has an age rating of 4+, making it suitable for young children and general audiences. ### Does Is it Prime have ads? No, Is it Prime does not contain advertisements. It is a completely ad-free application. ### What is the user rating for Is it Prime? Is it Prime has a rating of 3.2 stars based on 5 ratings. This suggests a mixed to positive user reception. ### When was Is it Prime first released? Is it Prime was originally released on August 11, 2009. It has been available for users for a significant period. ## Version history (last 4 releases) ### 2.0.29 — 2022-01-14 Updates for modern iPhone sizes and capabilities ### 2.0.23 — 2015-10-02 This app has been updated by Apple to display the Apple Watch app icon. An update 6 years in the making! - Fix a crash with iOS 9 - Now a Universal App with iPad support - Support for all orientations - Support for iOS9 iPad multitasking, check primes while using another app! ### 1.1 — 2009-08-24 Updating name and keywords ### 1.0 — 2009-08-11 No release notes. ## Apps similar to Is it Prime? | App | Rating | Price | Category | | --- | --- | --- | --- | | [Bitmovin Player](https://appshunter.io/ios/app/bitmovin-player/id1245174386) | 4.7 (3) | Free | Utilities | | [Calculator for Complex Field](https://appshunter.io/ios/app/calculator-for-complex-field/id6502463794) | 5.0 (4) | Free | Utilities | | [isPrime?](https://appshunter.io/ios/app/isprime/id6478832061) | — | Free | Utilities | | [Roman Numbers](https://appshunter.io/ios/app/roman-numbers/id1485298435) | 5.0 (1) | Free | Utilities | | [XL Mail -](https://appshunter.io/ios/app/xl-mail/id430582117) | 5.0 (1) | Free | Utilities | | [4Base Converter](https://appshunter.io/ios/app/4base-converter/id1660091760) | — | Free | Utilities | ## Related topics [the prime number finder](https://appshunter.io/ios/topics/the-prime-number-finder) · [blk prime](https://appshunter.io/ios/topics/blk-prime) --- *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 2026-06-05.*