# ZBook vs Pinakes

The clearest difference is update cadence: ZBook at every 2 days against Pinakes's every 9 days. ZBook also leads on iOS requirement (15.5 vs 26.1). 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.

ZBook ships an update every 2 days, Pinakes every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ZBook | Pinakes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/zbook/id1643735475/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 9 days |
| Monetization | Free | — |
| Size | 0 MB | 15 MB |
| Requires iOS | **15.5** | 26.1 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ben Shabowski](https://appshunter.io/developer/1643730054) | [Pablo Gomez Fernandez](https://appshunter.io/developer/959379127) |

## What reviewers say

### ZBook

[App page](https://appshunter.io/ios/app/zbook/id1643735475)

Organize your personal library with this app. Create custom shelves to categorize your books and easily move them between shelves. Keep your reading collection tidy and accessible.

**Highlights:** Add and track books, Create custom shelves, Move books between shelves, Organize personal library, Simple interface

**In-app purchases:** none


### Pinakes

[App page](https://appshunter.io/ios/app/pinakes-book-reading-tracker/id6757792513)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is ZBook free?

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

### Is Pinakes free?

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

### Do ZBook or Pinakes have ads?

Neither ZBook nor Pinakes shows ads.

### Which is updated more often, ZBook or Pinakes?

ZBook ships an update every 2 days, and Pinakes every 9 days. Most recently, ZBook was updated on November 3, 2026 and Pinakes 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.*