# API Zen vs iDepth NDI

The clearest difference is price: API Zen at Free against iDepth NDI's $1.99. API Zen also leads on update cadence (every 2 months vs every 9 months). iDepth NDI's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

API Zen is free to download; iDepth NDI costs $1.99 up front. API Zen sells 3 one-off in-app purchases. iDepth NDI asks for nothing beyond the download.

API Zen ships an update every 2 months, iDepth NDI every 9 months. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | API Zen | iDepth NDI |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | — | Paid |
| Size | 7 MB | 67 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jaseem Valiya Valappil](https://appshunter.io/developer/1714873997) | [Gwangyu Lee](https://appshunter.io/developer/1683904838) |

## What reviewers say

### 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 |


### iDepth NDI

[App page](https://appshunter.io/ios/app/idepth-ndi/id6553999598)

This app captures depth data using a LiDAR sensor and streams it in real-time via NDI. It's designed for media artists and computer musicians to control multimedia content with depth information.

**Highlights:** LiDAR depth scanning, Real-time NDI streaming, Color and depth image output, Multimedia content control, Cross-device compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is API Zen free?

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

### Is iDepth NDI free?

iDepth NDI costs $1.99, with no in-app purchases.

### Do API Zen or iDepth NDI have ads?

Neither API Zen nor iDepth NDI shows ads.

### Which is updated more often, API Zen or iDepth NDI?

API Zen ships an update every 2 months, and iDepth NDI every 9 months. Most recently, API Zen was updated on September 15, 2026 and iDepth NDI on September 21, 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.*