RacquetTuner vs String Master

RacquetTuner uses advanced audio analysis to measure your racquet string tension instantly. Simply tap your strings and get accurate readings in seconds. Perfect for tennis, badminton, squash, and racquetball players who want to maintain peak racquet performance and know exactly when to restring. ACCURATE STRING TENSION MEASUREMENT RacquetTuner analyzes the sound frequency produced when you tap your strings to calculate tension with precision. The app detects changes as small as 0.1 kg (0.2 lb), giving you reliable data you can trust. The measurement is based on proven physics: string vibration frequency is directly related to tension. Higher tension produces higher frequency sounds, and our algorithm converts this into accurate tension values. HOW IT WORKS 1. Select your racquet and sport type 2. Tap the center of your string bed 3. View instant tension reading with accuracy indicator 4. Save measurements to track tension loss over time FEATURES String Tension Measurement - Instant readings from audio analysis - Accuracy indicator shows measurement quality - Real-time waveform visualization - Support for metric (kg) and imperial (lb) units Swingweight Calculator - Calculate swingweight from racquet parameters - Simulate adding lead tape at different positions - Optimize balance point for your playing style - Visual racquet diagram with weight markers Stiffness Calculator (Premium) - Model stringbed stiffness from tension and head size - Compare power vs control characteristics - Load-displacement curve visualization - Simulate different string types Racquet Profiles - Store multiple racquet configurations - Track tension history for each racquet - Record string type and stringing date - Export measurement data to CSV SUPPORTED SPORTS Tennis - Standard tension range 18-32 kg Badminton - Standard tension range 9-14 kg Squash - Standard tension range 11-16 kg Racquetball - Standard tension range 14-22 kg WHY MEASURE STRING TENSION String tension drops immediately after stringing and continues to decrease with play. After two months, strings typically lose half their initial tension. This affects: - Shot control and accuracy - Power and ball speed - Spin generation - Comfort and arm health Regular tension monitoring helps you maintain consistent performance and decide the optimal time to restring. PREMIUM SUBSCRIPTION Unlock all features with Premium: - Unlimited racquet profiles - All sport types (Badminton, Squash, Racquetball) - Tension history graphs - Stiffness calculator - CSV data export Subscribe weekly, monthly, or yearly. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage subscriptions in Account Settings. ACCURACY NOTE RacquetTuner provides reliable relative measurements for tracking tension changes over time. For best results, tap consistently in the center of the string bed and ensure no dampeners are attached during measurement. SUPPORT Questions or feedback? Contact us at hi@jalsaa.com Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Stop guessing, start tracking. String Master is the ultimate performance-tracking companion for tennis players who demand the best from their equipment. Whether you are a casual player or a competitive athlete, your string setup dictates your game. String Master helps you record, analyze, and discover the perfect string configurations tailored to your unique playing style. [Major New Updates & Premium Features] • Smart Recommendation Wizard & Normalized Engine Finding your next string is now effortless. Our 3-step recommendation wizard uses lab-tested data (stiffness, spin potential, tension loss, energy return) and scales them using min-max normalization to prescribe the perfect setup matching your game. • Dynamic Activity Calendar & Backdating Visualize your active string health on a color-coded calendar. Log past sessions, backfill older stringing jobs, and edit durations with instant, automatic health percentage recalculations. • Playability & Environmental Logging Go beyond time tracking. Log how your strings feel (Soft, Crisp, Stiff, or Dead Poly), track weather conditions (Sunny, Humid, Cloudy), and record temperatures to understand how environment impacts your tension. • Community Insights & Lifespan Rankings Access real-time community statistics and trends. View the top average string lifespan rankings based on thousands of hours of real player data. (Access is granted to active members with a minimum of 4 hours of logged play over the past 14 days.) • Advanced Racket Specifications Track customized parameters for every racket in your bag. Log weight (g), stiffness (ra), swing weight (kg/cm²), balance point (mm), serial numbers, and custom tuning notes (lead tape, grip details). • Smart Restring & Terminology Polish Log a new job in 3 seconds! Tap "Restring" to clone your previous setup (racket, string, tension). Terminology has been audited and standardized to "History" across 10 languages. • Social Authentication & Data Migration Log in instantly with Google or Apple Sign-In. Seamlessly migrate your entire guest mode racket and stringing history to your permanent account in one click. [Core Features] • Restring Reminders: Set custom notifications (90 days or health below 20%) to prevent arm strain and maintain peak playability. • Hybrid Setup Support: Independently log mains and crosses (different brands, gauges, and tensions). • 10-Language Expert Guides: Tap the info (i) icons to read explanations of string materials and metrics, fully localized in 10 languages (EN, KO, ES, JA, ZH, ZH_Hant, DE, FR, IT, PT).