# Librai vs ReadGem

The clearest difference is in-app purchases: ReadGem at none against Librai's 2. Librai's advantage is update cadence (every 2 days vs every 4 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Librai sells 2 in-app purchases, starting at $4.99 per month. ReadGem asks for nothing beyond the download.

Librai ships an update every 2 days, ReadGem every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Librai | ReadGem |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 64 MB | 27 MB |
| Requires iOS | **17.2** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shivam Kumar Sanjiv Dev](https://appshunter.io/developer/1695129755) | [NEXTAOI, Inc](https://appshunter.io/developer/1748938499) |

## What reviewers say

### Librai

[App page](https://appshunter.io/ios/app/librai-ai-book-and-pdf-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 |


### ReadGem

[App page](https://appshunter.io/ios/app/readgem-read-learn-languages/id6770457167)

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

**In-app purchases:** none


## Frequently asked questions

### Is Librai free?

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

### Is ReadGem free?

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

### Do Librai or ReadGem have ads?

Neither Librai nor ReadGem shows ads.

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

Librai ships an update every 2 days, and ReadGem every 4 days. Most recently, Librai was updated on October 24, 2026 and ReadGem on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*