Instantly measure your racquet string tension using advanced audio analysis. Track tension loss over time, calculate swingweight, and optimize your racquet performance for tennis, badminton, squash, and racquetball.





249+ iOS apps & games curated and reviewed
From beginner-friendly picks to power-user tools, our string tension calc list covers 249+ iPhone apps and games updated through October 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | Yes | Aug 2026 | ||
| 2 | $2.99 | — | No | No | Oct 2026 | ||
| 3 | Free | 1.0★ (2) | No | Yes | Sep 2026 | ||
| 4 | Free | — | No | No | May 2026 | ||
| 5 | Free | 2.7★ (21) | No | No | Sep 2026 | ||
| 6 | Free | 4.6★ (1.5K) | No | No | Oct 2026 | ||
| 7 | Free | 5.0★ (1) | No | No | Sep 2026 | ||
| 8 | Free | 4.9★ (39) | No | No | Oct 2026 |














Instantly measure your racquet string tension using advanced audio analysis. Track tension loss over time, calculate swingweight, and optimize your racquet performance for tennis, badminton, squash, and racquetball.