This app uses your iPhone's microphone to measure the tension of your racquet strings. It tracks tension decay over time, offers personalized restring recommendations, and provides a comprehensive string toolkit for serious players.






250+ iOS apps curated and reviewed
Every iPhone needs a few good string tension ai apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (2) | No | Yes | Sep 2026 | ||
| 2 | Free | 1.0★ (1) | No | Yes | Jul 2026 | ||
| 3 | Free | — | Yes | Yes | Aug 2026 | ||
| 4 | Free | 1.0★ (2) | No | Yes | Sep 2026 | ||
| 5 | Free | — | No | Yes | Sep 2026 | ||
| 6 | Free | 3.8★ (4) | No | Yes | Sep 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | — | No | No | May 2026 |






This app uses your iPhone's microphone to measure the tension of your racquet strings. It tracks tension decay over time, offers personalized restring recommendations, and provides a comprehensive string toolkit for serious players.




This app helps tennis players manage their racquet strings. It educates users on the importance of string tension for performance and preventing arm soreness. Understand when your strings are 'dead' and impacting your game.
