# ACEM vs Tennis Custom

The clearest difference is in-app purchases: ACEM at none against Tennis Custom's 1. ACEM also leads on update cadence (every 5 days vs monthly). Tennis Custom's advantage is iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

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

ACEM ships an update every 5 days, Tennis Custom monthly. The most recent releases landed on October 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ACEM | Tennis Custom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tennis-custom/id6761192994/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 23 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Midia Local Solucoes LTDA](https://appshunter.io/developer/1290035122) | [Rodrigo Fontoura](https://appshunter.io/developer/1888198446) |

## What reviewers say

### ACEM

[App page](https://appshunter.io/ios/app/acem/id1640358836)

**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 ACEM free?

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

### Is Tennis Custom free?

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

### Do ACEM or Tennis Custom have ads?

Neither ACEM nor Tennis Custom shows ads.

### Which is updated more often, ACEM or Tennis Custom?

ACEM ships an update every 5 days, and Tennis Custom monthly. Most recently, ACEM was updated on October 3, 2026 and Tennis Custom on October 31, 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.*