Collatz Explorer vs Set Theory Basics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Collatz Explorer
Explore mathematical sequences with this app. It calculates the standard Collatz sequence for any number you enter and can also display sequences from an alternative 3x-1 function.
- Calculate Collatz sequences
- Calculate 3x-1 function sequences
- Input any number
- Visualize sequences
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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.
Set Theory Basics
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Set Theory Basics is an independent practice app for building confidence with core set theory ideas, notation, operations, relations, functions, proofs, and common reasoning traps. It is designed for students, self-learners, interview preparation, and anyone who wants focused review without account setup. Study across 160 questions organized by Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Every question includes an explanation so you can learn from mistakes, not just count scores. - FSRS spaced-repetition intervals for smarter review - Weak-point heatmap to spot topics that need work - Daily challenge for consistent practice - Mock exams for timed review sessions - Offline practice with no login required - Clear explanations for every question Practice offline, no login required. Independent study app for Set Theory Basics practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.
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Verdict
The clearest difference is device support: Set Theory Basics at 3 against Collatz Explorer's 1. Set Theory Basics also leads on iOS requirement (15.1 vs 18.6). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Collatz Explorer | Set Theory Basics |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Berk Sucu | Tsuyoshi Sezaki |
In-app purchases
Collatz Explorer
No in-app purchases
Set Theory Basics
No in-app purchases
