# InPiano vs Catch Flex

The clearest difference is in-app purchases: Catch Flex at none against InPiano's 1. Catch Flex also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). InPiano's advantage is update cadence (every 4 days vs fortnightly). On price and ads there is nothing between them.

Both are free to download. InPiano sells 1 one-off in-app purchase. Catch Flex asks for nothing beyond the download.

InPiano ships an update every 4 days, Catch Flex fortnightly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | InPiano | Catch Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/catch-flex/id6794968958/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 491 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Ho Lam Chung](https://appshunter.io/developer/1896483913) | [Vilegacy](https://appshunter.io/developer/1817905358) |

## What reviewers say

### InPiano

[App page](https://appshunter.io/ios/app/inpiano/id6775055352)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 完整解鎖 inpiano | $5.99 | one-time |


### Catch Flex

[App page](https://appshunter.io/ios/app/catch-flex/id6794968958)

A full-body camera rhythm game where your movements control the action. Play through various challenges, create your own levels, and compete with others, all without touching a button.

**Highlights:** Full-body tracking with a single camera, Gesture-controlled menus, Multiple gameplay mechanics (cut, rings, balls, stomp, slide), Customizable difficulty and no-fail mode, Local split-screen versus mode, Browser-based level editor, Privacy-focused on-device tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is InPiano free?

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

### Is Catch Flex free?

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

### Do InPiano or Catch Flex have ads?

Neither InPiano nor Catch Flex shows ads.

### Which is updated more often, InPiano or Catch Flex?

InPiano ships an update every 4 days, and Catch Flex fortnightly. Most recently, InPiano was updated on October 14, 2026 and Catch Flex on October 5, 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.*