Comparison

String Master vs String Tension Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

String Master

Optimize your tennis game by precisely tracking string tension and durability. Record every restring, analyze string performance, and discover the best setups for your playstyle. Never guess about your strings again.

Highlights
  • Smart Restring logging
  • Custom string input
  • Smart String Finder
  • Restring reminders
  • Detailed logs and history
  • Hybrid setup support
Features
Read full description

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).

About

String Tension Meter

Features
Read full description

String Tension Meter helps tennis and badminton players measure racquet string tension quickly and accurately using only an iPhone. By analyzing string vibration through your device's microphone, the app provides instant tension readings in both lbs and kg without requiring any external hardware. It also includes advanced racquet management tools. Whether you're a competitive player, coach, stringer, or recreational athlete, String Tension Meter makes it easy to track racquet performance and know when it's time to restring. FEATURES • Measure string tension in seconds using your iPhone microphone • Instant racquet tension readings in lbs and kg • Supports both tennis and badminton racquets • Works with all common string materials and gauges • No external string meter or hardware required • Save and organize measurements by racquet profile • Track tension changes over time with measurement history • Store and manage multiple racquets and string setups • Archive previous string jobs and restore them anytime • Share tension measurement results with others HOW IT WORKS Select your sport and string information Hold the racquet near your iPhone Tap the string bed a few times The app analyzes vibration frequency Receive an instant string tension measurement RACQUET MANAGEMENT Keep detailed records of every racquet and string setup. Save reference tensions, monitor tension loss, review historical measurements, and compare performance across different string jobs. Everything stays organized in one place so you can make informed restringing decisions. PERFECT FOR • Tennis players • Badminton players • Racquet technicians and stringers • Coaches and academies • Competitive athletes tracking equipment performance String Tension Meter combines acoustic analysis, racquet management, and tension tracking in one easy-to-use app. Download today and take control of your string tension with a smarter way to measure and monitor racquet performance. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

String Master4 screens
String Tension Meter1 screens

Verdict

The call

The clearest difference is in-app purchases: String Master at none against String Tension Meter's 2. String Master also leads on ads (none vs shown). String Tension Meter's advantage is iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. String Tension Meter sells 2 in-app purchases, starting at $0.99 per month. String Master asks for nothing beyond the download.

Scorecard3 real differences · 6 level
String Master versus String Tension Meter: the parameters behind the verdict, then further details
ParameterString MasterString Tension Meter
PriceFreeFree
Rating5.0 (7 ratings) — better—
Number of ratings7 — better—
Update frequencyWeekly—
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.613.0 — better
Further details — not scored
Size71 MB32 MB
Age rating4+4+
DeveloperORYONG KIMTzu Yu Chou

In-app purchases

None

String Master

No in-app purchases

2 purchases

String Tension Meter

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$5.991 Year

Questions

Is String Master free?
String Master is free to download, with no in-app purchases.
Is String Tension Meter free?
String Tension Meter is free to download, with in-app purchases available.
Do String Master or String Tension Meter have ads?
String Tension Meter shows ads; String Master does not.

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