StringTension vs Tennistory

StringTension is a professional racket string tension measurement tool. It analyzes the sound frequency produced by tapping the string bed to estimate string tension. Supports both badminton and tennis, helping you track tension changes and find the optimal time to restring. CORE FEATURES - Tension Measurement — Tap the strings, get tension data in seconds - Tension Tracking — Record every measurement, observe tension decay over time - String Status — Visual indicators show string condition (Good / Monitor / Restring) - Restring Reminder — Smart reminders based on your detection history STRINGER TOOLBOX (Member Exclusive) - Stringing Verification — Compare "machine setting vs actual tension" right after stringing - Report Cards — Generate stringing reports to share with your clients - Client Management — Keep local records of client stringing history RACKET DATABASE - 100+ popular racket models (YONEX, Li-Ning, Victor, Wilson, HEAD, Babolat, etc.) - 50+ popular string models - Continuously updated SMART RECOMMENDATIONS - Personalized tension recommendations based on sport, play style, and racket specs - Tension guide for beginners to find their ideal string tension MULTILINGUAL Chinese, English, Japanese, Korean, German, French NOTE Measurement results are algorithmic estimates for reference only and cannot replace professional stringing machine readings. Use in a quiet environment for best results. Terms of Use: https://hk.hkhdtp.com/legal/stringtension-terms.html Privacy Policy: https://hk.hkhdtp.com/legal/stringtension-privacy.html

Every racket has a story. Tennistory brings your rackets, string setups and time on court together, with a 166-racket library and a clear sense of when to restring. RACKET LIBRARY • 166 rackets from Wilson, Head, Babolat, Yonex, Tecnifibre, Prince and more, from current models to classics • Unstrung specs, string patterns, and power, control, spin, sweet spot and comfort ratings • Search, compare, and a racket finder quiz • Missing a racket, or a spec or picture looks wrong? Submit it. Accepted contributions earn points you can redeem for PRO STRINGS AND CARE • Save the string, tension and setup for every racket • Log court time, restrings and grip changes • String-life gauge and restring reminders • Hear the tension: tap the string bed and Tennistory estimates the tension from the sound, analysed on your device (Pro) ON COURT • Keep score and save your matches • Check the weather and a play score before you head out • Court themes, and a personality for every racket • A racket log card to save or share • Back up everything to iCloud Drive or Files FREE AND PRO Free: the full racket library, one racket in your collection, 30 days of history and fixed-interval reminders. Tennistory Pro (monthly or yearly): unlimited rackets, full history, tension curve, hear the tension, the 15-question racket finder, all five court themes, every string-life display, unlimited racket photos, reminders predicted from your pace, and the full racket dialogue. Care percentages and tension readings are estimates, not stringing-machine measurements. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account settings. Support: tennistory.story@gmail.com Privacy: https://tennistoryapp.pages.dev/privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/