# Must Read vs ZooBook

The clearest difference is in-app purchases: ZooBook at none against Must Read's 3. ZooBook also leads on update cadence (daily vs every 6 days). Must Read's advantage is iOS requirement (18.0 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Must Read sells 3 in-app purchases, starting at $4.99 per month. ZooBook asks for nothing beyond the download.

Must Read ships an update every 6 days, ZooBook daily. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Must Read | ZooBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (27 ratings)](https://appshunter.io/ios/app/must-read-the-book-tracker/id930967257/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 48.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Monetization | Freemium | — |
| Size | 89 MB | 11 MB |
| Requires iOS | **18.0** | 26.5 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stanislav Rastvorov](https://appshunter.io/developer/870142280) | [Sangwook Joo](https://appshunter.io/developer/6780354751) |

## What reviewers say

### Must Read

[App page](https://appshunter.io/ios/app/must-read-the-book-tracker/id930967257)

Track your reading progress, time sessions with live activities, and discover new books. Access a vast library of classic eBooks and audiobooks with PRO. Organize your library with custom lists and detailed reading statistics.

**Highlights:** Track reading progress, Live Activity reading timer, Detailed reading statistics, Access to 74,000+ classic eBooks, Access to 18,000+ audiobooks, Customizable reading lists, Book discovery and recommendations

**Features:** macOS Compatibility, Family Sharing, Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Must Read Pro (Monthly) | $4.99 | per month |
| Must Read Pro (Annual) | $29.99 | per year |
| Must Read Pro Lifetime | $49.99 | one-time |


### ZooBook

[App page](https://appshunter.io/ios/app/zoobook/id6780354749)

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

**In-app purchases:** none


## Frequently asked questions

### Is Must Read free?

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

### Is ZooBook free?

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

### Do Must Read or ZooBook have ads?

Neither Must Read nor ZooBook shows ads.

### Which is updated more often, Must Read or ZooBook?

Must Read ships an update every 6 days, and ZooBook daily. Most recently, Must Read was updated on November 6, 2026 and ZooBook on October 31, 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.*