StringTracker vs Self Coach Tennis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StringTracker
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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.
Self Coach Tennis
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Train smarter with instant video comparison. Shoot a clip during practice, import it in seconds, and compare your motion with pro technique. Use slow motion to break down every part of your stroke and spot exactly what to improve. Why players love it: - Fast import from your phone - Side-by-side comparison with pro clips - Slow-motion replay for detailed analysis - Easy review of forehand, backhand, and serve Improve with clear visual feedback, one swing at a time.
Screenshots
Verdict
The clearest difference is update cadence: Self Coach Tennis at every 2 days against StringTracker's every 19 months. StringTracker's advantage is iOS requirement (15.0 vs 18.6). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
StringTracker ships an update every 19 months, Self Coach Tennis every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | StringTracker | Self Coach Tennis |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 32 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Rays Of Space Oy | 万朋 于 |
In-app purchases
StringTracker
No in-app purchases
Self Coach Tennis
No in-app purchases
Questions
Is StringTracker free?
Is Self Coach Tennis free?
Do StringTracker or Self Coach Tennis have ads?
Which is updated more often, StringTracker or Self Coach Tennis?
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