RacquetTune vs STRUNG App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- String tension measurement
- Swingweight calculator
- Stiffness calculator
- Racquet configuration simulation
- Tension history tracking
- Export test data
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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.
STRUNG App
This app streamlines racket stringing operations for stringers, coaches, and pro shops. It manages jobs, tracks string inventory, and offers a player portal for customer history. Features include QR code integration and revenue tracking.
- Manage stringing jobs with clear statuses
- Track string inventory and consumption
- Build customer and racket libraries
- Generate QR codes for jobs and rackets
- Player portal for restring history
- Revenue tracking by venue and period
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STRUNG is the all-in-one management app built for racket stringers, coaches, and pro shops. Track every restring from drop-off to collection, keep accurate string inventory, and give players a smoother experience with a dedicated player portal. Whether you’re a solo stringer or running multiple venues, STRUNG keeps your workflow fast, consistent, and professional. - Run your stringing workflow - Create and manage jobs with clear statuses (e.g., pending, completed, paid) - Link jobs to customers, rackets, venues, and string set-ups - Keep a clean history of restring notes and preferences - Customers, rackets, and set-ups - Store customer details and preferences - Build a racket library per customer (models, specs, patterns, notes) - Save repeatable set-ups to reduce errors and speed up intake - Strings inventory that stays accurate - Track string stock and consumption as jobs are completed - See what’s running low before it becomes a problem - Support metric and imperial gauge display (based on your settings) - QR labels and scanning - Generate QR codes to identify and track jobs and rackets quickly - Reduce mix-ups and speed up handovers - Revenue visibility - Understand output by venue and by period (perfect for planning and staffing) Player portal - A modern, simple experience for players to stay connected to their rackets and restring history (ideal for coaches and busy shops) - Made for real-world operations - Fast add flows, searchable lists, and clean organisation - Built to scale from one person to multiple users and venues Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account at confirmation of purchase. You can manage or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.strungapp.com/privacy
Screenshots
Verdict
The clearest difference is price: STRUNG App at Free against RacquetTune's $2.99. STRUNG App also leads on update cadence (weekly vs every 3 months). RacquetTune's advantage is rating (4.6 vs 2.5) and ratings volume (482 vs 2). On review sentiment, 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
STRUNG App is free to download; RacquetTune costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RacquetTune holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: RacquetTune has 482 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of RacquetTune's written reviews are positive against 67% of STRUNG App's.
RacquetTune ships an update every 3 months, STRUNG App weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | RacquetTune | STRUNG App |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.6 (482 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 72.7% of reviews — better | 66.7% of reviews |
| Number of ratings | 482 — better | 2 |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #17 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 11 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Sten Kaiser | Nikki Roenn |
Customer experience
RacquetTune
STRUNG App
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
STRUNG App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RacquetTune
No in-app purchases
STRUNG App
No in-app purchases







