# UBSM vs Book Progress

The clearest difference is in-app purchases: UBSM at none against Book Progress's 1. UBSM also leads on iOS requirement (15.6 vs 17.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Book Progress sells 1 one-off in-app purchase. UBSM asks for nothing beyond the download.

UBSM ships an update monthly, Book Progress every 6 weeks. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | UBSM | Book Progress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 52 MB | 5 MB |
| Requires iOS | **15.6** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xentral Methods](https://appshunter.io/developer/464707106) | [Chelsea Hannah](https://appshunter.io/developer/1656599214) |

## What reviewers say

### UBSM

[App page](https://appshunter.io/ios/app/ubsm/id741995501)

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

**In-app purchases:** none


### Book Progress

[App page](https://appshunter.io/ios/app/book-progress-reading-tracker/id6504213962)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Goodreads Export | $2.99 | one-time |


## Frequently asked questions

### Is UBSM free?

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

### Is Book Progress free?

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

### Do UBSM or Book Progress have ads?

Neither UBSM nor Book Progress shows ads.

### Which is updated more often, UBSM or Book Progress?

UBSM ships an update monthly, and Book Progress every 6 weeks. Most recently, UBSM was updated on October 14, 2026 and Book Progress on October 2, 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.*