# API Zen vs API Tool Pro

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

Both are free to download. API Zen sells 3 one-off in-app purchases. API Tool Pro asks for nothing beyond the download.

API Zen ships an update every 2 months, API Tool Pro every 3 days. The most recent releases landed on September 15, 2026 and June 26, 2026 respectively.

## The numbers

| Metric | API Zen | API Tool Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 7 MB | 37 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jaseem Valiya Valappil](https://appshunter.io/developer/1714873997) | [Ashen Ishanka Costha](https://appshunter.io/developer/1566497857) |

## 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 |


### API Tool Pro

[App page](https://appshunter.io/ios/app/api-tool-pro/id6749198993)

**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 API Tool Pro free?

API Tool Pro is free to download, with no in-app purchases.

### Do API Zen or API Tool Pro have ads?

Neither API Zen nor API Tool Pro shows ads.

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

API Zen ships an update every 2 months, and API Tool Pro every 3 days. Most recently, API Zen was updated on September 15, 2026 and API Tool Pro on June 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*