# String Master vs Tennis Custom

The clearest difference is in-app purchases: String Master at none against Tennis Custom's 1. String Master also leads on update cadence (weekly vs monthly) and ratings volume (8 vs 2). Tennis Custom's advantage is iOS requirement (13.0 vs 15.6). On price, rating, ads and device support there is nothing between them.

Both are free to download. Tennis Custom sells 1 one-off in-app purchase. String Master asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for String Master against 5.0 for Tennis Custom. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

String Master ships an update weekly, Tennis Custom monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | String Master | Tennis Custom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/string-master-tennis-log/id6757102423/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/tennis-custom/id6761192994/reviews) |
| Number of ratings | **8** | 2 |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 79 MB | 23 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ORYONG KIM](https://appshunter.io/developer/1864541863) | [Rodrigo Fontoura](https://appshunter.io/developer/1888198446) |

## What reviewers say

### String Master

[App page](https://appshunter.io/ios/app/string-master-tennis-log/id6757102423)

Optimize your tennis game by precisely tracking string tension and durability. Record every restring, analyze string performance, and discover the best setups for your playstyle. Never guess about your strings again.

**Highlights:** Smart Restring logging, Custom string input, Smart String Finder, Restring reminders, Detailed logs and history, Hybrid setup support

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

**In-app purchases:** none


### Tennis Custom

[App page](https://appshunter.io/ios/app/tennis-custom/id6761192994)

This app helps tennis players precisely customize their racquets by simulating the impact of weight, balance, and swingweight adjustments. It uses a physics-based model to show how changes affect power, control, stability, and spin, allowing for smart matching and custom setup comparisons.

**Highlights:** Physics-based mass distribution model, Smart Match for target specs, Batch matching for multiple racquets, Real measurement integration, Feel simulator for performance impact, Custom setup saving and comparison, Racquet library

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tennis Custom Pro | $4.99 | one-time |


## Frequently asked questions

### Is String Master free?

String Master is free to download, with no in-app purchases.

### Is Tennis Custom free?

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

### Which has better reviews, String Master or Tennis Custom?

String Master and Tennis Custom are both rated 5.0 out of 5 on the App Store, from 8 and 2 ratings respectively.

### Do String Master or Tennis Custom have ads?

Neither String Master nor Tennis Custom shows ads.

### Which is updated more often, String Master or Tennis Custom?

String Master ships an update weekly, and Tennis Custom monthly. Most recently, String Master was updated on October 30, 2026 and Tennis Custom on October 31, 2026.

---

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