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.






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Looking for free racket tension apps and games? 19 of our 242+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (3) | No | Yes | Oct 2026 | ||
| 2 | $2.99 | 4.6★ (482) | No | No | Oct 2026 | ||
| 3 | Free | — | No | Yes | Sep 2026 | ||
| 4 | Free | 3.8★ (4) | No | Yes | Oct 2026 | ||
| 5 | Free | 3.5★ (2) | No | No | May 2026 | ||
| 6 | Free | 2.0★ (2) | No | Yes | Oct 2026 | ||
| 7 | Free | 1.0★ (2) | No | Yes | Oct 2026 | ||
| 8 | Free | 5.0★ (7) | No | No | Oct 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 uses sound to accurately measure racquet string tension and analyze racquet performance. It offers tools to customize racquets, simulate different configurations, and track stringing consistency for various racket sports.





