How did it play? Rate every stringing, turn favorites into templates — and always know when it's time to restring.
Dead strings cost you power, spin, and control — but most players have no idea when it's time to restring. StringSense tells you exactly when your strings are due, so you always play with confidence.
What Makes StringSense Different
Unlike simple timers or tone-based tools, StringSense uses a science-informed string health model. It factors in your string type, playing time, court surface, temperature, intensity, player level, and your racquet's specs to calculate a real-time health score for every racquet you own.
True Hybrid Support
Play with a hybrid setup? StringSense tracks your mains and crosses string types separately. The algorithm calculates wear based on the actual materials — so a poly/gut hybrid gets a different health score than a poly/multi hybrid. No more averaged guesswork.
Your Racquet Counts
String pattern and head size change how fast your strings wear. A dense 18×20 on a small head spares them (up to 15% more string life); an open 16×19 on a big head punishes them (up to 13% less). Log string pattern, head size, and weight per racquet, all optional — or pick your model from the built-in catalog (Babolat, Wilson, Head, Yonex, and more) and the specs fill in automatically.
How It Works
1. Add your racquet and log your string job with string type and tension.
2. Record your play sessions — duration, surface, intensity, and conditions.
3. Watch your string health score update automatically after every session.
4. Get a clear signal when it's time for fresh strings.
Smart Check
After each session, StringSense asks how your strings felt: crisp, normal, or mushy. Over time it learns the health level at which your strings feel dead to YOU and tunes your restring recommendation to match — the more you check in, the sharper it gets.
Reminders
You don't have to keep checking. StringSense tells you when your strings reach your personal restring threshold — the one it learned from your Smart Checks. One wear reminder per stringing, scheduled for the morning and never at night — your device decides the exact moment. Free, switched on once after your first string job, and off again in the Workshop whenever you like.
Until you've logged sessions it stays quiet — with no play time there is nothing to estimate.
Rating & favorites
How did the last stringing play? StringSense asks once when it comes off the racquet: stars, five traits, a private note. Setups you want again become favorites — on your next string job, strings, types, gauges and tensions are pre-filled.
Knowledge Base & Glossary
Five string type guides explain character and warning signs. Plus a glossary from string pattern to settling — free, right in the Workshop.
Your Dashboard at a Glance
See all your racquets in one place with live health indicators. Track your total play hours, average string health, and tension history with detailed graphs. Swipe through your racquets, tap for details, and stay on top of your equipment.
Works Offline
No Wi-Fi at the club? No problem. StringSense stores everything locally and syncs automatically when you're back online. Your data is always available, on or off the court.
StringSense Pro
The free version gives you core string tracking for one racquet — no time limit. When you're ready for more:
• Unlimited racquets
• Detailed tension graphs
• Data export (CSV & JSON)
• Time reminder after 3, 6, 9 or 12 months, with a head start
• Per-racquet reminder control
• Support ongoing development
Privacy First
Your data belongs to you. StringSense shows no ads and never sells your data — your racquet and session data is stored securely in your personal account and never shared.
Whether you're a club player who strings every few months, a tournament competitor who restrings weekly, or a weekend warrior who just wants to know when it's time — StringSense keeps your equipment in peak condition.
Download StringSense and never play on dead strings again.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
StringSense 3.10 — an under-the-hood release
A new technical foundation for what comes next. What you will notice:
• Foldables and tablets: forms, racquet detail and the Workshop sit in a readable, centred column; the camera cut-out and system bars no longer cover controls — in landscape and Split View too. Folding or unfolding mid-form keeps what you typed.
• Workshop and Court open right away after a longer break.
• Signing out now affects this device only; your other devices stay signed in. If changes haven't synced yet, the app asks first.
• Fixes: removing a rating keeps a favorite you just set; the stars follow the keyboard as expected; the catalog hint uses your decimal separator; the privacy notice names ratings and notes.
Version 3.10.0
The developer, Stefan Große, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Contact Info
Identifiers
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Size
15.6 MB
Category
Sports
Compatibility
Requires iOS 16.6 or later.
iPhone Requires iOS 16.6 or later.
iPad Requires iPadOS 16.6 or later.
Mac Requires macOS 13.5 or later and a Mac with Apple M1 chip or later.