# OpenAPI Viewer vs Schemely

The clearest difference is in-app purchases: Schemely at none against OpenAPI Viewer's 3. Schemely also leads on update cadence (daily vs every 2 weeks). OpenAPI Viewer's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. OpenAPI Viewer sells 3 one-off in-app purchases. Schemely asks for nothing beyond the download.

OpenAPI Viewer ships an update every 2 weeks, Schemely daily. Both last shipped on September 18, 2026.

## The numbers

| Metric | OpenAPI Viewer | Schemely |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Daily** |
| Size | 13 MB | 1 MB |
| Requires iOS | 18.1 | **18.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Victor Manuel Puga Ruiz](https://appshunter.io/developer/1648773908) | [Futo Togawa](https://appshunter.io/developer/6783813985) |

## What reviewers say

### 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 |


### Schemely

[App page](https://appshunter.io/ios/app/schemely/id6788003083)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenAPI Viewer free?

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

### Is Schemely free?

Schemely is free to download, with no in-app purchases.

### Do OpenAPI Viewer or Schemely have ads?

Neither OpenAPI Viewer nor Schemely shows ads.

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

OpenAPI Viewer ships an update every 2 weeks, and Schemely daily. Most recently, OpenAPI Viewer was updated on September 18, 2026 and Schemely on September 18, 2026.

---

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