# iKeleton OSC vs API Zen

The clearest difference is price: API Zen at Free against iKeleton OSC's $4.99. API Zen also leads on update cadence (every 2 months vs every 24 months). iKeleton OSC's advantage is in-app purchases (none vs 3) and chart position (#187 vs unranked). On ads, device support and iOS requirement there is nothing between them.

API Zen is free to download; iKeleton OSC costs $4.99 up front. API Zen sells 3 one-off in-app purchases. iKeleton OSC asks for nothing beyond the download.

iKeleton OSC ships an update every 24 months, API Zen every 2 months. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | iKeleton OSC | API Zen |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ikeleton-osc/id6448196217/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 2 months** |
| Monetization | Paid | — |
| Best chart rank | **#187** | — |
| Size | 4 MB | 7 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gwangyu Lee](https://appshunter.io/developer/1683904838) | [Jaseem Valiya Valappil](https://appshunter.io/developer/1714873997) |

## What reviewers say

### iKeleton OSC

[App page](https://appshunter.io/ios/app/ikeleton-osc/id6448196217)

**Currently charting:** #187 Top Paid · Developer Tools (US App Store)

This app captures body tracking data and transmits it to other devices via OSC. It's ideal for creating multimedia content by integrating motion data with various devices. Requires an A12 Bionic processor or newer for body tracking.

**Highlights:** Body tracking data capture, OSC protocol transmission, Multimedia content creation, Cross-device data sharing, Requires A12 Bionic processor or newer

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

**In-app purchases:** none


### API Zen

[App page](https://appshunter.io/ios/app/api-zen/id6471152115)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thanks | $3.99 | one-time |
| Thank you | $5.99 | one-time |
| Thank you very much | $7.99 | one-time |


## Frequently asked questions

### Is iKeleton OSC free?

iKeleton OSC costs $4.99, with no in-app purchases.

### Is API Zen free?

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

### Do iKeleton OSC or API Zen have ads?

Neither iKeleton OSC nor API Zen shows ads.

### Which is updated more often, iKeleton OSC or API Zen?

iKeleton OSC ships an update every 24 months, and API Zen every 2 months. Most recently, iKeleton OSC was updated on September 19, 2026 and API Zen on September 15, 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.*