41+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our quartet 2 list covers 41+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (27) | No | No | Oct 2026 | |
| 2 |  | $0.99 | — | No | No | Sep 2026 | |
| 3 |  | Free | — | No | No | May 2026 | |
| 4 |  | $0.99 | — | No | No | Aug 2026 | |
| 5 |  | Free | — | No | No | May 2026 | |
| 6 |  | Free | 1.0★ (1) | No | No | May 2026 | |
| 7 |  | Free | — | No | No | Aug 2026 | |
| 8 |  | Free | — | — | No | Sep 2026 |
Practice and perform jazz standards with live studio recordings. Mute your instrument to play along, change key, adjust tempo, and loop sections. Features animated chord diagrams and royalty-free multitrack exports for creative remixing.
Practice Japanese vocabulary and kanji from the "QUARTET 2 Intermediate Japanese" textbook. Features include flashcards, quizzes, and stroke order animations for efficient learning anytime, anywhere.
