# PocketShelf vs Margin

The clearest difference is update cadence: Margin at every 6 days against PocketShelf's every 2 weeks. Margin also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PocketShelf sells 4 in-app purchases, starting at $3.99 per month and Margin sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

PocketShelf ships an update every 2 weeks, Margin every 6 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PocketShelf | Margin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/pocketshelf-tbr-book-tracker/id6745476834/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 159 MB | 74 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Klemens Strasser](https://appshunter.io/developer/889417671) | [Pavel Stepanov](https://appshunter.io/developer/6788835559) |

## What reviewers say

### PocketShelf

[App page](https://appshunter.io/ios/app/pocketshelf-tbr-book-tracker/id6745476834)

Easily organize your book collection and track your reading progress. Save notes, get session recaps, and start reading directly from your home screen.

**Highlights:** Organize book library, Track reading sessions, Add notes and summaries, Home screen widget, Accessibility features, AI-powered recaps

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $19.99 | per year |
| One Extra Book Slot | $4.99 | one-time |
| Lifetime | $49.99 | one-time |


### Margin

[App page](https://appshunter.io/ios/app/margin-reading-streak/id6811490653)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Margin Plus Monthly | $2.99 | per month |
| Margin Plus Yearly | $24.99 | per year |
| Margin Plus Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is PocketShelf free?

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

### Is Margin free?

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

### Do PocketShelf or Margin have ads?

Neither PocketShelf nor Margin shows ads.

### Which is updated more often, PocketShelf or Margin?

PocketShelf ships an update every 2 weeks, and Margin every 6 days. Most recently, PocketShelf was updated on October 30, 2026 and Margin on October 24, 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.*