Comparison

RacquetTune vs StringPing

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

StringPing

Features
Read full description

StringPing turns the sound of your strings into a tension reading. Tap the center of your string bed with the heel of your palm and StringPing listens to the "ping," measures its pitch, and estimates your string tension in seconds — no gauge, no trip to the stringer. Strings lose tension the moment they're installed and keep dropping with every hit. StringPing helps you feel it before your game tells you: track each racquet over time and watch the tension-loss curve so you know exactly when it's time to restring. HOW IT WORKS • Pick your racquet, string, and pattern (or scan with sensible defaults) • Tap the string bed a few times • StringPing captures each tap, filters out noise and outliers, and averages the readings for a confident result • Save it to build a history for that racquet TRACK EVERY RACQUET Keep a library of your frames with their string setup and last-measured date • See a tension-over-time chart for each racquet • Review a full scan log with the drop between each reading • Know how many weeks a string bed has been in play BUILT FOR THE COURT Fast, on-device analysis — your audio never leaves your phone • Works across common racquet head sizes and string patterns • Clear confidence indicator so you know when a reading is solid • Pounds or kilograms A NOTE ON ACCURACY StringPing is an acoustic estimate, not a stringing machine. It shines at tracking relative change over time on the same racquet and string — the best way to catch a string bed going dead.

Screenshots

RacquetTune4 screens
StringPing4 screens

Verdict

The call

The clearest difference is price: StringPing at Free against RacquetTune's $2.99. StringPing also leads on update cadence (daily vs every 3 months). RacquetTune's advantage is in-app purchases (none vs 4) and chart position (#18 vs unranked). On ads 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

StringPing is free to download; RacquetTune costs $2.99 up front. StringPing sells 4 one-off in-app purchases. RacquetTune asks for nothing beyond the download.

UpkeepUpdate frequency

RacquetTune ships an update every 3 months, StringPing daily. Both last shipped on November 6, 2026.

Scorecard6 real differences · 5 level
RacquetTune versus StringPing: the parameters behind the verdict, then further details
ParameterRacquetTuneStringPing
Price$2.99Free — better
Rating4.6 (482 ratings) — better—
Positive reviews72.7% of reviews—
Number of ratings482 — better—
Update frequencyEvery 3 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#18 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better26.5
Further details — not scored
Size11 MB6 MB
Age rating4+4+
DeveloperSten KaiserKorhan Pekun

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

StringPing

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

RacquetTune

No in-app purchases

4 purchases

StringPing

One-time4
  • Overgrip$1.99
  • Can of Tennis Balls$4.99
  • Set of Strings$9.99
Show 1 more
  • Reel of String$19.99

Questions

Is RacquetTune free?
RacquetTune costs $2.99, with no in-app purchases.
Is StringPing free?
StringPing is free to download, with in-app purchases available.
Do RacquetTune or StringPing have ads?
Neither RacquetTune nor StringPing shows ads.
Which is updated more often, RacquetTune or StringPing?
RacquetTune ships an update every 3 months, and StringPing daily. Most recently, RacquetTune was updated on November 6, 2026 and StringPing on November 6, 2026.

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