# Just vs Book3M

The clearest difference is update cadence: Book3M at every 8 days against Just's every 19 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.

Just ships an update every 19 months, Book3M every 8 days. The most recent releases landed on October 27, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Just | Book3M |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 8 days** |
| Size | 47 MB | 43 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Salon Ultimate](https://appshunter.io/developer/1112287685) | [Book3m, LLC](https://appshunter.io/developer/1824492177) |

## What reviewers say

### Just

[App page](https://appshunter.io/ios/app/just-a-cut/id1597529543)

**In-app purchases:** none


### Book3M

[App page](https://appshunter.io/ios/app/book3m/id6748150033)

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

**In-app purchases:** none


## Frequently asked questions

### Is Just free?

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

### Is Book3M free?

Book3M is free to download, with no in-app purchases.

### Do Just or Book3M have ads?

Neither Just nor Book3M shows ads.

### Which is updated more often, Just or Book3M?

Just ships an update every 19 months, and Book3M every 8 days. Most recently, Just was updated on October 27, 2026 and Book3M on October 22, 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.*