# one more layer vs UniBook

The clearest difference is in-app purchases: one more layer at none against UniBook's 1. one more layer also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. UniBook sells 1 one-off in-app purchase. one more layer asks for nothing beyond the download.

one more layer ships an update every 9 days, UniBook every 3 weeks. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | one more layer | UniBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 474 MB | 15 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [sbp GmbH](https://appshunter.io/developer/1483627301) | [Denis Tronin](https://appshunter.io/developer/1446210844) |

## What reviewers say

### one more layer

[App page](https://appshunter.io/ios/app/one-more-layer/id1483627302)

**Features:** macOS Compatibility

**In-app purchases:** none


### UniBook

[App page](https://appshunter.io/ios/app/unibook-read-without-limits/id6757717595)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UniBook Premium | $49.99 | one-time |


## Frequently asked questions

### Is one more layer free?

one more layer is free to download, with no in-app purchases.

### Is UniBook free?

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

### Do one more layer or UniBook have ads?

Neither one more layer nor UniBook shows ads.

### Which is updated more often, one more layer or UniBook?

one more layer ships an update every 9 days, and UniBook every 3 weeks. Most recently, one more layer was updated on October 19, 2026 and UniBook 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.*