Comparison

TennisKeeper vs TennisTension Pro

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

Head to head
About

TennisKeeper

Track your progress in various racquet sports with detailed analytics and personalized insights. Log matches, practices, and cross-training sessions, and visualize your performance over time. Enhance your game with advanced swing analysis and health correlations.

Highlights
  • Track singles, doubles, practices, and lessons
  • Apple Watch integration for activity tracking
  • Interactive dashboards and intelligent analytics
  • String and shoe lifespan reminders
  • League team roster and lineup management
  • Swing path, angles, and power analysis
  • Health and workout correlation insights
Features
Read full description

Track your racquet sports activities including Tennis, Padel, Pickleball, Squash, Racquetball, Badminton or Table Tennis. Start and save your activities from your Apple Watch. Visualize your progress using our interactive dashboards. Top Free Features: • Track your singles, doubles, practices, lessons and cross training. • Add notes, photo to make each outing memorable. • Start activity from Apple Watch and get your swing path, counts, steps, distance covered, and heart rate while playing • Apple Watch Complication to launch your tracking quickly • Apple Health and Activity app integration • Templates to document your opponents games style • String Tracker - get reminder when string reaches its lifespan • Activities Log and Dashboard • Manage league team rosters, match lineups and scores • Data stored in iCloud and accessible from any iOS device • No additional account creation or password needed • Intelligent Analytics • Sharing and Leaderboard • Widgets • Siri support Pro Edition (one time purchase) Upgrade to Pro Edition to get these great features: • Track unlimited activities, players and teams • Head to Head Stats • Detail match stats by week, month, year • Win, loss, tie stats by matches, sets and games • Win, loss, tie match stats with each doubles partner • Export your data to .csv file • For each session, swing shots breakdown, heart rate and steps count graph • Graph to compare your footwork and fitness level between different matches • Shoes Tracker - get reminder when shoes reaches its lifespan Swing Analyzer Subscription (per month or per year) For Pro Edition users with an Apple Watch, subscribe to Swing Analyzer to learn about your swing path, angles, power and contact point. See every swing in 3D and get to know your motion like never before. Swing Analyzer Features: • Speed breakdown by Forehand, Backhand, Smash and Volleys • Detail Session Summary (e.g. Longest Rally) • Impact Time and Swing Path Analysis • Swings Calibration • Swings Compare, Sharing and Best Shot • Replay match in Augmented Reality Insights Pack Subscription (per month or per year) See how your racquet sports activities impact your health and your life. Combine your data to find useful correlations. Insight Pack Features: • Weight, Sleep, Calories and Workout Correlation • Heart Rate Zones • 1-min and 2-mins heart rate recovery trends • Heart Rate Variability trends Live Match Subscription (per month or per year) For parents, coaches, teams and tennis fans, we offer you the best way to watch and track live tennis. Subscribe to Live Match to track your kids, students, favorite players scores point-by-point. Keep track of each point details and analyze the key match statistics. Live Match Features: • Record singles or doubles match point by point • Supports multiple game format • Automated score counting • Track ace, double fault, winner and error shot • Detail shot type tracking (e.g. forehand, volley, lob) • Undo function • Server indicator • Full match timeline • Players performance analysis • Match data stored in iCloud • Share live match you tracked with friends Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: http://www.tenniskeeperapp.com/privacy.html Terms of Use: http://www.tenniskeeperapp.com/terms.html

About

TennisTension Pro

Instantly measure the tension of any tennis racket and string configuration with high accuracy. Input racket and string parameters, then gently tap the strings near your phone's microphone. Save configurations and measurements to history.

Highlights
  • Instant tension measurement
  • 0.1kg measurement accuracy
  • String and racket parameter input
  • Library of 130+ string models
  • Save racket/string configurations
  • Measurement history
  • Calibration feature
Features
Read full description

**Please note: TennisTension Pro is *not free*. We do offer a 3-day free trial for the both of the offered subscription plans.** To use all the features described below you must subscribe to TennisTension Pro, choosing from the following plans: – Monthly plan (1 month) – Annual plan (12 months) Check the momentous tension instantly of any tennis racket/string configuration! The measurement accuracy is 0.1kg(0.2lbs)! Enter the string and racket parameters - string model and diameter; racket head size, string pattern etc. Remove the string dampener! Tap gently the string couple of times to produce a ringing sound close to the phone microphone! Other features: • choosing a specific string model from a library with more than 130 different thoroughly examined string models • saving the different racket/string models configurations • saving measurements in a history section • Calibration. Read the instructions for the Calibration in the settings for more details. Subscription Terms and Details - Get unlimited access to all features for USD $1.99/month, USD $9.99/year - The payment will be charged to your iTunes account at confirmation of purchase. - The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Subscription may be managed and auto-renewal may be turned off by going to Account Settings after purchase. - The account will be charged for renewal within 24 hours prior to the end of the current period. - Any unused portion of a free trial period will be forfeited when the user purchases a subscription to that publication. Privacy Policy : https://docs.google.com/document/d/1WrTpoB5qFgnWFdNszr4ydr5ipd_hIaGc Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TennisKeeper4 screens
TennisTension Pro4 screens

Verdict

The call

The clearest difference is rating: TennisKeeper at 2.8 against TennisTension Pro's 2.0. TennisKeeper also leads on monetization model (free with in-app purchases vs subscription) and ratings volume (40 vs 2). TennisTension Pro's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and in-app purchases 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. TennisKeeper sells 7 in-app purchases, starting at $1.49 per month and TennisTension Pro sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

TennisKeeper holds the better App Store score, 2.8 against 2.0. That said, the two scores are not equally well evidenced: TennisKeeper has 40 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

TennisKeeper ships an update every 2 months, TennisTension Pro every 3 weeks. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

Scorecard6 real differences · 4 level
TennisKeeper versus TennisTension Pro: the parameters behind the verdict, then further details
ParameterTennisKeeperTennisTension Pro
PriceFreeFree
Rating2.8 (40 ratings) — better2.0 (2 ratings)
Positive reviews52.8% of reviews
Number of ratings40 — better2
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size52 MB6 MB
Age rating4+4+
DeveloperChristina LauIvaylo Velichkov

Customer experience

TennisKeeper

All ratings40 ratings
Positive32.5%
Neutral15.0%
Negative52.5%
Written reviews89 reviews
Positive52.8%
Neutral6.7%
Negative40.4%

TennisTension Pro

All ratings2 ratings
Positive0.0%
Neutral50.0%
Negative50.0%

Bugs and requests

TennisKeeper

Reported bugs

18 issues
  • App keeps uninstalling paid swing analyzer
  • App vanishes from Apple Watch after purchase
  • App crashes after updates
  • Sync issues between watch and phone
  • App freezes on Apple Watch
Show 13 more
  • Transfer failed when saving sessions
  • App continues running after saving, draining battery
  • App crashes in the 'more' section
  • App freezes frequently on Apple Watch
  • App crashes after a few minutes on Apple Watch
  • App incorrectly counts forehands/backhands due to left-handed setting
  • Swing analysis is completely random
  • App freezes on watch, cannot save sessions
  • App does not start or save sessions
  • Transfer failed even when next to phone
  • App crashes frequently, especially when other notifications appear
  • App crashes when opening
  • iPhone app crashes in the 'more' section

Requested features

13 requests
  • Add championship tie-break option
  • Add step-by-step guide for shortcuts
  • Add shortcut to stop, save, and reverse wrist selection
  • Allow selection of right/left handedness independently of Apple Watch settings
  • Improve swing analysis to match animations
Show 8 more
  • Add score keeping on the watch during play
  • Redesign iPhone app interface for easier data access
  • Add data export to CSV or XLSX
  • Add data import from CSV or XLSX
  • Easier access to notes on opponents
  • Allow manual input of stats and shots
  • Ability to delete activities
  • Train the app to register specific shot types

TennisTension Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

TennisKeeper

Subscriptions6
  • Swing Analyzer Monthly$1.491 Month
  • Insights Pack Monthly$1.991 Month
  • Live Match Monthly$2.991 Month
Show 3 more
  • Swing Analyzer Annual$10.491 Year
  • Insights Pack Annual$15.991 Year
  • Live Match Annual$19.991 Year
One-time1
  • Pro Edition$4.99
2 purchases

TennisTension Pro

Subscriptions2
  • Monthly Plan3 Days trial$1.991 Month
  • Annual Plan3 Days trial$9.991 Year

Questions

Is TennisKeeper free?
TennisKeeper is free to download, with in-app purchases available.
Is TennisTension Pro free?
TennisTension Pro is free to download, with in-app purchases available.
Which has better reviews, TennisKeeper or TennisTension Pro?
TennisKeeper is rated higher. TennisKeeper averages 2.8 out of 5 from 40 ratings, while TennisTension Pro averages 2.0 from 2 ratings.
Do TennisKeeper or TennisTension Pro have ads?
Neither TennisKeeper nor TennisTension Pro shows ads.
Which is updated more often, TennisKeeper or TennisTension Pro?
TennisKeeper ships an update every 2 months, and TennisTension Pro every 3 weeks. Most recently, TennisKeeper was updated on September 21, 2026 and TennisTension Pro on September 14, 2026.

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