apps / 365729342
RacquetTune - String Tension
Racquet optimization tools
Sten Kaiser · Sports · $2.99 · US storefront
- rating
- 4.6 ★
- ratings
- 474
- updated
- Apr 2, 2026
- released
- Apr 7, 2010
v7.7
visible word pool · 6 words
title 28/30 chars · subtitle 26/30 chars
App Store search indexes the title and subtitle together with the hidden 100-character keyword field as one combined pool: any phrase assembled from those words can rank. These are the words of RacquetTune - String Tension's pool that are public — the keyword field is not exposed by any API.
from the listing
Listen to your racquet and perfect your game! RacquetTune ensures that your racquet is ideally suited to your style of play. Simple and straightforward to use, the app uses the sound generated by tapping the strings to calculate the tension with high accuracy. In addition, the interactive swingweight calculator aids in customizing your racquet to fit your own stroke pattern, while the stiffness calculator allows you to simulate different racquet configurations. RacquetTune…
latest US reviews
★★★★★
great tool
been using it for years. great that it has note functions. I can know: when tension drops, How well I strung the racket and I can rate the setup for the future. Especially good for a nerd like me that tries a lot of different setups
— Andyonehander
★★★★★
No reading
I’ve followed the instructions in their YouTube video and can never get a reading for tension. Wasted money!
— Bbartel78
★★★★★
Stopped picking sound after iOS 26.4 update
Hey Sten, would you please update the app? The app was still picking up my tapping before the 26.4 update. It's completely dead now.
— Longtime RacquetTune owner
Newest first, from Apple's public reviews feed. Agents can pull hundreds per storefront with the reviews tool.
Where does it rank? Chart position is one signal — most installs come from keyword search. Check where RacquetTune - String Tension ranks for any keyword, free, with the rank checker.
this page is one tool call
{ "tool": "app", "arguments": { "appId": 365729342, "countries": [ "US" ], "subtitle": true } }
The app tool returns this listing as stable JSON for any storefront — one of thirteen ASO tools your agent gets over MCP. Get a free key.