240+ iOS apps & games curated and reviewed
With an average user rating of 3.5★, the number systems category is one of the App Store's strongest. Browse all 240+ apps and games we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (12) | No | Yes | Oct 2026 | |
| 2 |  | Free | 1.0★ (1) | No | No | Oct 2026 | |
| 3 |  | Free | 1.8★ (5) | No | No | May 2026 | |
| 4 |  | Free | 1.0★ (3) | No | No | May 2026 | |
| 5 |  | Free | — | No | No | Oct 2026 | |
| 6 |  | Free | — | No | No | Oct 2026 | |
| 7 |  | Free | 4.0★ (2) | Yes | Yes | Nov 2026 | |
| 8 |  | Free | 3.7★ (6) | No | Yes | Oct 2026 |
Learn and master the Nashville Number System for music. This app offers interactive modules to help musicians of all levels understand chord progressions, transpose songs, and improve their ear training. It's designed for quick learning and on-the-fly musical communication.
Easily convert numbers between decimal, binary, hexadecimal, and octal systems. Supports conversion to and from any base.
A number guessing game where players deduce a secret four-digit number. Earn points by correctly identifying digits in the number and their positions. The game continues until the secret number is fully guessed.
