# ReadLevel AI vs Mimir Books

The clearest difference is update cadence: Mimir Books at every 3 weeks against ReadLevel AI's every 4 months. Mimir Books also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

ReadLevel AI ships an update every 4 months, Mimir Books every 3 weeks. The most recent releases landed on October 23, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ReadLevel AI | Mimir Books |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/readlevel-ai/id6749190438/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 67 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Isabella Lee-Rubio](https://appshunter.io/developer/1424131616) | [Juan Bautista Galvan](https://appshunter.io/developer/1885857997) |

## What reviewers say

### ReadLevel AI

[App page](https://appshunter.io/ios/app/readlevel-ai/id6749190438)

Instantly determine a book's reading level by scanning any page with advanced AI. Get age range, grade level, and language-specific scores for any text, even without a barcode or ISBN. Works offline with foreign language books and digital displays.

**Highlights:** AI-powered text analysis, Instant reading level determination, Supports age range and grade level, Foreign language reading level scores, Works without ISBN or barcodes, Scans digital displays and photocopies

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Pro Monthly Subscription | $9.99 | per month |
| Scan Pack | $0.99 | one-time |


### Mimir Books

[App page](https://appshunter.io/ios/app/mimir-books/id6760713165)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mimir Books: Monthly Access | $3.99 | per month |
| Mimir Books: Yearly Access | $39.99 | per year |
| Mimir Books: Lifetime Access | $99.99 | one-time |


## Frequently asked questions

### Is ReadLevel AI free?

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

### Is Mimir Books free?

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

### Do ReadLevel AI or Mimir Books have ads?

Neither ReadLevel AI nor Mimir Books shows ads.

### Which is updated more often, ReadLevel AI or Mimir Books?

ReadLevel AI ships an update every 4 months, and Mimir Books every 3 weeks. Most recently, ReadLevel AI was updated on October 23, 2026 and Mimir Books on October 13, 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.*