# eventOne Onsite vs API CBA

The clearest difference is update cadence: eventOne Onsite at every 13 months against API CBA's every 51 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

eventOne Onsite ships an update every 13 months, API CBA every 51 months. Both last shipped on September 13, 2026.

## The numbers

| Metric | eventOne Onsite | API CBA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 51 months |
| Size | 54 MB | 23 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [eventOne, Inc.](https://appshunter.io/developer/1233694101) | [Advocacy and Policy Institute](https://appshunter.io/developer/1607460167) |

## What reviewers say

### eventOne Onsite

[App page](https://appshunter.io/ios/app/eventone-onsite/id1463673664)

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

**In-app purchases:** none


### API CBA

[App page](https://appshunter.io/ios/app/api-cba/id1607460165)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is eventOne Onsite free?

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

### Is API CBA free?

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

### Do eventOne Onsite or API CBA have ads?

Neither eventOne Onsite nor API CBA shows ads.

### Which is updated more often, eventOne Onsite or API CBA?

eventOne Onsite ships an update every 13 months, and API CBA every 51 months. Most recently, eventOne Onsite was updated on September 13, 2026 and API CBA on September 13, 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.*