# Tennis Setup Tracker vs Kai Surf Coach

The clearest difference is in-app purchases: Kai Surf Coach at none against Tennis Setup Tracker's 2. Kai Surf Coach also leads on iOS requirement (15.1 vs 18.6). Tennis Setup Tracker's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Tennis Setup Tracker sells 2 in-app purchases, starting at $1.99 per month. Kai Surf Coach asks for nothing beyond the download.

Tennis Setup Tracker ships an update every 4 days, Kai Surf Coach every 3 months. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Tennis Setup Tracker | Kai Surf Coach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/tennis-setup-tracker/id6757754557/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 45 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrea Campodonico](https://appshunter.io/developer/1853855515) | [Gianmarco Cimini](https://appshunter.io/developer/6780413672) |

## What reviewers say

### Tennis Setup Tracker

[App page](https://appshunter.io/ios/app/tennis-setup-tracker/id6757754557)

This app helps tennis players track their rackets, string jobs, and playing hours with an intuitive interface. It features a unique Tension Lab to measure string tension using sound and a comprehensive database for equipment details.

**Highlights:** Acoustic string tension measurement, Racket and string database, Racquet garage with custom photos, Detailed stringing history, Session and match tracking, Light and Dark Mode UI

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium mensile | $1.99 | per month |
| premium | $9.99 | per year |


### Kai Surf Coach

[App page](https://appshunter.io/ios/app/kai-surf-coach/id6780413670)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tennis Setup Tracker free?

Tennis Setup Tracker is free to download, with in-app purchases available.

### Is Kai Surf Coach free?

Kai Surf Coach is free to download, with no in-app purchases.

### Do Tennis Setup Tracker or Kai Surf Coach have ads?

Neither Tennis Setup Tracker nor Kai Surf Coach shows ads.

### Which is updated more often, Tennis Setup Tracker or Kai Surf Coach?

Tennis Setup Tracker ships an update every 4 days, and Kai Surf Coach every 3 months. Most recently, Tennis Setup Tracker was updated on October 25, 2026 and Kai Surf Coach on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*