# Librai vs ShelfMark

The clearest difference is update cadence: Librai at every 2 days against ShelfMark's weekly. Librai also leads on iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Librai sells 2 in-app purchases, starting at $4.99 per month and ShelfMark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Librai ships an update every 2 days, ShelfMark weekly. Both last shipped on October 3, 2026.

## The numbers

| Metric | Librai | ShelfMark |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Size | 65 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shivam Kumar Sanjiv Dev](https://appshunter.io/developer/1695129755) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Librai

[App page](https://appshunter.io/ios/app/librai-book-reader/id6761315801)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Librai Pro | $4.99 | per month |
| Librai Pro | $39.99 | per year |


### ShelfMark

[App page](https://appshunter.io/ios/app/shelfmark-reading-tracker/id6788129809)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShelfMark Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Librai free?

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

### Is ShelfMark free?

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

### Do Librai or ShelfMark have ads?

Neither Librai nor ShelfMark shows ads.

### Which is updated more often, Librai or ShelfMark?

Librai ships an update every 2 days, and ShelfMark weekly. Most recently, Librai was updated on October 3, 2026 and ShelfMark on October 3, 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.*