# Collatz Explorer — Calculates Collatz Sequences > Calculates and visualizes Collatz sequences and 3x-1 function sequences. (iPhone/iPad app by Berk Sucu.) - Source: https://appshunter.io/ios/app/collatz-explorer/id6755121221 (this page in markdown: same URL + `.md`) - Developer: [Berk Sucu](https://appshunter.io/developer/1852063488) - Category: Education - Price: Free - Rating: 4.60/5 from 7 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 18.6 · 1 MB - Languages: American English - Released: 2025-12-04 - Data updated: 2026-08-13 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews.md ## What is Collatz Explorer? A fun app that is capable of showing you any collatz sequence for a number that you input. Also capable of showing you any sequence from an alternate 3x-1 function for any number you input. ## Key features - Calculate Collatz sequences - Calculate 3x-1 function sequences - Input any number - Visualize sequences ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews.md ### 4/5 — Great concept, BUT *2026-07-07* there is an issue with the app, whenever I try to input a number in the custom sequence… it doesn’t work. Also there is no way to input negative numbers ### 5/5 — Greatest App Of All Time *2026-02-06* Genuinely, the things I would do just be able to use this app one more time. It is impeccable, the epitamy of perfection all an a square pixel on my phone screen. Every time I not think of using the app, my stomach does 6.whole mini loopty-loops. The is really just no doubt the greatest app I have ever used, am using, or will ever use. ### 5/5 — An immaculate and fully functional app *2025-12-06* A truly wondrous tool which brought my dreams into reality. Never in my life did I actually think I’d be exposed to such a beautiful algorithm presented in such a simple, and organized way. ### 5/5 — Best app to use to explore collatz *2025-12-06* Using the regular calculator for collatz is quite tedious, so this app saves a lot of time. ### 5/5 — Incredible app *2025-12-05* This app allowed me to quickly and efficiently calculate my Collatz Conjecture curiosities ### 5/5 — ABSOLUTE CINEMA *2025-12-04* Great for all my collatz sequence needs ## Frequently asked questions about Collatz Explorer ### What is the Collatz Explorer app? Collatz Explorer is an educational app that allows you to calculate and visualize Collatz sequences for any number you input. It also supports sequences from an alternative 3x-1 function. ### What numbers can I input into Collatz Explorer? You can input any number into Collatz Explorer to generate its corresponding sequence. The app is designed to handle a wide range of numerical inputs for sequence calculation. ### Does Collatz Explorer offer offline functionality? The provided data does not specify whether Collatz Explorer offers offline functionality. However, as a calculation-based app, it may function without an internet connection. ### What is the learning methodology of Collatz Explorer? Collatz Explorer employs a hands-on, exploratory learning methodology. Users actively input numbers and observe the resulting sequences, fostering understanding through direct interaction and visualization. ### How does Collatz Explorer track user progress? The app focuses on individual sequence calculations rather than long-term user progress tracking. Each input generates a new sequence for exploration, without a persistent record of past calculations. ### Is Collatz Explorer suitable for children? Collatz Explorer has an age rating of 4+, making it suitable for younger users. Its focus on mathematical exploration can be a fun way to introduce basic number concepts. ### What devices is Collatz Explorer available on? Collatz Explorer is currently supported on iPhones. The app is designed for the iOS mobile platform. ### How often is Collatz Explorer updated? The latest version of Collatz Explorer is 1.4, which was last updated on February 19, 2026. This indicates a recent update, suggesting ongoing development and support. ## Version history (last 5 releases) ### 1.5 — 2026-08-07 Fixed the bug where if you input your own function the app crashed. ### 1.4 — 2026-02-19 Now you are able to input your own custom function and see the steps for your own function ### 1.3 — 2026-01-02 Changed layout, removed history, made layout simpler and easier to read. ### 1.2 — 2025-12-06 Makes the number pad disappear when you click run. ### 1.1 — 2025-12-05 Fixed bugs with dark mode and formatting. --- *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 2026-08-13.*