Comparison

RacquetTune vs StringTracker

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

Head to head
About

RacquetTune

This app uses sound to accurately measure racquet string tension and analyze racquet performance. It offers tools to customize racquets, simulate different configurations, and track stringing consistency for various racket sports.

Highlights
  • String tension measurement
  • Swingweight calculator
  • Stiffness calculator
  • Racquet configuration simulation
  • Tension history tracking
  • Export test data
Features
Currently charting
Read full description

Listen to your racquet and perfect your game! RacquetTune ensures that your racquet is ideally suited to your style of play. Simple and straightforward to use, the app uses the sound generated by tapping the strings to calculate the tension with high accuracy. In addition, the interactive swingweight calculator aids in customizing your racquet to fit your own stroke pattern, while the stiffness calculator allows you to simulate different racquet configurations. RacquetTune not only makes it easier to decide when it is time to restring, it is also an invaluable tool when testing different racquets and strings and in identifying which of your racquets is best suited for different types of games. RacquetTune also allows you to check whether your stringer is consistent in his work. RacquetTune includes the following user-friendly tools: Tension measurement - Quickly determines the tension and stringbed stiffness. - Able to detect changes in tension as small as 0.1 kg/0.2 lb. - An accuracy indicator ensures results are consistent. - Graphical presentation of sound waves helps you find the ideal way of tapping the strings. - Settings can be customized to serve tennis, squash, racquetball and badminton racquets, respectively. - View the tension history for each racquet as a list or a graph. - Email a spreadsheet with test data. Swingweight calculator - Add as many weights as you wish to the frame. - Move and change weights to visualize how swingweight, balance and sweet spot location are affected. - Enter target values for the racquet and let RacquetTune distribute the weights automatically. Stiffness calculator - Simulate various racquet and string configurations - Vary tension, string type and racquet head size. - Shows load-displacement curves, stiffness and elastic energies - Handles the large deformations encountered in actual play View a demo video at racquettune.com RacquetTune has been featured in tennis magazines in USA, Italy, France, Germany, Sweden and Norway. "The app is very, very impressive. I get more tension diagnostic questions than just about anybody in the universe, so this is a very good thing to be able to recommend." Jonathan Wolfe US Racquet Stringers Association Note, that the actual string tension in the racquet and the setting seen on a stringing machine are two different things and therefore incomparable - more information can be found at racquettune.com.

About

StringTracker

Features
Read full description

StringTracker helps tennis players keep track of racket string life with a simple, focused workflow. Add your rackets, record when they were last strung, and update playtime after each session. StringTracker keeps a clear running total of hours played on each string job, so you can decide when it is time to restring based on your own playing habits. Track multiple rackets: Keep all your rackets in one place and see their current string age at a glance. Log playtime quickly: Add or subtract playtime with simple swipe actions using your preferred time increment. Set your restring target: Choose the number of play hours you consider optimal before restringing. Mark rackets as restrung: Reset playtime when you restring a racket while keeping your tracking simple. Organize your list: Rename, reorder, or remove rackets as your setup changes. StringTracker is built for players who want a lightweight way to manage racket maintenance without spreadsheets, notes, or complicated session logs.

Screenshots

RacquetTune4 screens
StringTracker4 screens

Verdict

The call

The clearest difference is price: StringTracker at Free against RacquetTune's $2.99. RacquetTune's advantage is update cadence (every 3 months vs every 19 months) and chart position (#16 vs unranked). On ads, in-app purchases 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

StringTracker is free to download; RacquetTune costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RacquetTune ships an update every 3 months, StringTracker every 19 months. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

Scorecard4 real differences · 7 level
RacquetTune versus StringTracker: the parameters behind the verdict, then further details
ParameterRacquetTuneStringTracker
Price$2.99Free — better
Rating4.6 (474 ratings) — better—
Positive reviews72.7% of reviews—
Number of ratings474 — better—
Update frequencyEvery 3 months — betterEvery 19 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#16 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size11 MB32 MB
Age rating4+4+
DeveloperSten KaiserRays Of Space Oy

Bugs and requests

RacquetTune

Reported bugs

4 issues
  • App crashes when trying to delete rackets
  • String factor database not working properly
  • Inconsistent readings on the same racket
  • Struggles with rackets with built-in dampers

Requested features

5 requests
  • Add more strings to the database
  • Allow logging of playing hours
  • Improve history/graphing features
  • Support for hybrid string setups
  • Add racket database for easier setup

StringTracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

RacquetTune

No in-app purchases

None

StringTracker

No in-app purchases

Questions

Is RacquetTune free?
RacquetTune costs $2.99, with no in-app purchases.
Is StringTracker free?
StringTracker is free to download, with no in-app purchases.
Do RacquetTune or StringTracker have ads?
Neither RacquetTune nor StringTracker shows ads.
Which is updated more often, RacquetTune or StringTracker?
RacquetTune ships an update every 3 months, and StringTracker every 19 months. Most recently, RacquetTune was updated on September 22, 2026 and StringTracker on September 16, 2026.

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