Comparison

StringTension vs Tension Lab

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

Head to head
About

StringTension

Features
Read full description

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

About

Tension Lab

Features
Read full description

Your strings change every time you play. Tennis Tension Lab helps you see that change before it surprises you on court. Place your phone beside the racquet and tap the center of the string bed three to five times. The app analyzes the sound on your device and gives you a repeatable tension estimate in seconds. KEEP YOUR SETUP CLEAR • Check current string tension • Compare each reading with the baseline from a fresh string job • Follow tension loss on a simple timeline • See when it may be time to restring • Keep every racquet, string job, hybrid setup and note together • Find models quickly in a catalog of 1,347 racquets and 216 strings • Compare string characteristics before choosing your next setup MADE FOR THE COURT No account is required to start. Tap audio is analyzed in memory and discarded; only measurement results are saved. Choose lb or kg and keep your history organized by racquet. For the most consistent results, measure the same racquet in a quiet place with the same tapping method. Readings are estimates based on sound and equipment information, not certified measurements from a stringing machine.

Screenshots

StringTension4 screens
Tension Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: Tension Lab at none against StringTension's 3. Tension Lab also leads on iOS requirement (15.1 vs 26.2). On price, ads 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. StringTension sells 3 in-app purchases, starting at $0.99 per month. Tension Lab asks for nothing beyond the download.

Scorecard2 real differences · 4 level
StringTension versus Tension Lab: the parameters behind the verdict, then further details
ParameterStringTensionTension Lab
PriceFreeFree
Update frequency—Every 4 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPod — better
Requires iOS26.215.1 — better
Further details — not scored
Size4 MB72 MB
Age rating4+4+
DeveloperShenzhen Huopu Software Co., Ltd.SEOKWON KONG

In-app purchases

3 purchases

StringTension

Subscriptions2
  • StringTension Pro (Monthly)$0.991 Month
  • StringTension Pro (Yearly)$5.991 Year
One-time1
  • StringTension Pro (Lifetime)$11.99
None

Tension Lab

No in-app purchases

Questions

Is StringTension free?
StringTension is free to download, with in-app purchases available.
Is Tension Lab free?
Tension Lab is free to download, with no in-app purchases.
Do StringTension or Tension Lab have ads?
Neither StringTension nor Tension Lab shows ads.

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