# RBMS 2022 vs Alpha OS Mobile App

The clearest difference is in-app purchases: RBMS 2022 at none against Alpha OS Mobile App's 2. RBMS 2022 also leads on iOS requirement (11.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Alpha OS Mobile App sells 2 in-app purchases, starting at $10.00 per month. RBMS 2022 asks for nothing beyond the download.

## The numbers

| Metric | RBMS 2022 | Alpha OS Mobile App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 63 MB | 41 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Library Association](https://appshunter.io/developer/467667414) | [David Bergstrom](https://appshunter.io/developer/1882448295) |

## What reviewers say

### RBMS 2022

[App page](https://appshunter.io/ios/app/rbms-2022/id1604648419)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alpha OS Mobile App

[App page](https://appshunter.io/ios/app/alpha-os-mobile-app/id6771462320)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $10.00 | per month |
| Annual | $99.99 | per year |


## Frequently asked questions

### Is RBMS 2022 free?

RBMS 2022 is free to download, with no in-app purchases.

### Is Alpha OS Mobile App free?

Alpha OS Mobile App is free to download, with in-app purchases available.

### Do RBMS 2022 or Alpha OS Mobile App have ads?

Neither RBMS 2022 nor Alpha OS Mobile App shows ads.

---

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