# KeyBean vs OpenAPI Viewer

The clearest difference is update cadence: OpenAPI Viewer at every 3 weeks against KeyBean's every 7 months. KeyBean's advantage is iOS requirement (16 vs 18.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. KeyBean sells 2 in-app purchases, starting at $3.99 per year and OpenAPI Viewer sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

KeyBean ships an update every 7 months, OpenAPI Viewer every 3 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KeyBean | OpenAPI Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 24 MB | 15 MB |
| Requires iOS | **16** | 18.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [北京如电科技有限公司](https://appshunter.io/developer/1432455619) | [Victor Manuel Puga Ruiz](https://appshunter.io/developer/1648773908) |

## What reviewers say

### KeyBean

[App page](https://appshunter.io/ios/app/keybean/id6742166489)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $3.99 | per year |
| Lifetime | $9.99 | one-time |


### OpenAPI Viewer

[App page](https://appshunter.io/ios/app/openapi-viewer/id6761346493)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


## Frequently asked questions

### Is KeyBean free?

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

### Is OpenAPI Viewer free?

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

### Do KeyBean or OpenAPI Viewer have ads?

Neither KeyBean nor OpenAPI Viewer shows ads.

### Which is updated more often, KeyBean or OpenAPI Viewer?

KeyBean ships an update every 7 months, and OpenAPI Viewer every 3 weeks. Most recently, KeyBean was updated on October 28, 2026 and OpenAPI Viewer on October 25, 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.*