# API Zen vs Developer Browser Pro

The clearest difference is price: API Zen at Free against Developer Browser Pro's $1.99. API Zen also leads on iOS requirement (13.0 vs 17.0). Developer Browser Pro's advantage is in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). On ads and device support there is nothing between them.

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

API Zen ships an update every 2 months, Developer Browser Pro every 3 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | API Zen | Developer Browser Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 7 MB | 11 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jaseem Valiya Valappil](https://appshunter.io/developer/1714873997) | [EyeOS Store Inc.](https://appshunter.io/developer/1036418634) |

## 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 |


### Developer Browser Pro

[App page](https://appshunter.io/ios/app/developer-browser-pro/id6760410589)

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

**In-app purchases:** none


## Frequently asked questions

### Is API Zen free?

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

### Is Developer Browser Pro free?

Developer Browser Pro costs $1.99, with no in-app purchases.

### Do API Zen or Developer Browser Pro have ads?

Neither API Zen nor Developer Browser Pro shows ads.

### Which is updated more often, API Zen or Developer Browser Pro?

API Zen ships an update every 2 months, and Developer Browser Pro every 3 weeks. Most recently, API Zen was updated on October 2, 2026 and Developer Browser Pro on October 1, 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.*