TennistoryFrequently asked questions
Is Tennistory free?
Free to start. The full racket library is free forever, and the free version includes one racket in your collection, 30 days of history and fixed-interval restring reminders. Tennistory Pro (monthly or yearly) unlocks unlimited rackets, full history, the tension curve, hear-the-tension, the 15-question racket finder, all five court themes and reminders predicted from your pace.
Which devices does it run on?
iPhone with iOS 15 or later. It also runs on Apple silicon Macs through the App Store. There is no Android version yet.
Which languages does it support?
The app is in English and Simplified Chinese.
What does the care percentage mean?
It is an estimate of how much life your current string job has left, based on how often and how long you play since the last restring. It is not a measured string tension.
Can it measure my string tension?
With Tennistory Pro, tap the string bed and the app estimates the tension from the sound. Audio is analysed on your device and is never recorded or uploaded. Treat the result as a guide, not a stringing-machine reading.
Where is my data stored?
Rackets, sessions, matches and photos you add are stored on your device. Tennistory does not require an account. You can export a backup at any time.
How many rackets are in the library?
166 rackets from 10 brands, including 115 current models and discontinued classics, with unstrung specs, string patterns and editorial ratings.
How often should I restring?
A widely used rule of thumb is to restring as many times a year as you play per week. Players using polyester often restring sooner. Tennistory tracks your sessions and shows when your strings are getting tired.
Keep your rackets in Tennistory
Save strings and tension, log every session, restring and grip change, and see when it is time to restring. Free to start.