# Reader AI vs purrpage. Double

The clearest difference is review sentiment: purrpage. Double at 100% against Reader AI's 0%. purrpage. Double also leads on in-app purchases (none vs 7). Reader AI's advantage is ads (none vs shown) and update cadence (every 5 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Reader AI sells 7 in-app purchases, starting at $6.99 per month. purrpage. Double asks for nothing beyond the download.

Reader AI ships an update every 5 days, purrpage. Double every 10 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Reader AI | purrpage. Double |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/reader-ai-read-and-learn/id6806736317/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 10 days |
| Monetization | Freemium | **Ad-supported** |
| Size | 63 MB | 95 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [江 刘](https://appshunter.io/developer/1672554088) | [LeoStudio Global](https://appshunter.io/developer/1700204948) |

## What reviewers say

### Reader AI

[App page](https://appshunter.io/ios/app/reader-ai-read-and-learn/id6806736317)

This AI-powered reader helps you understand books by providing contextual word definitions, sentence explanations, and passage summaries. You can also chat with AI about the content, convert books to audiobooks, and save new vocabulary.

**Highlights:** Contextual word definitions, AI sentence and passage explanations, Book chat with AI, Convert books to audiobooks, Learning notebook for vocabulary, Import various book formats, PDF annotation

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Quarterly | $19.99 | per 3 months |
| Yearly | $69.99 | per year |
| 100 points | $9.99 | one-time |
| No bookshelf limit | $9.99 | one-time |
| 300 points | $29.99 | one-time |
| 1000 points | $89.99 | one-time |


### purrpage. Double

[App page](https://appshunter.io/ios/app/purrpage-double-page-reader/id6815597778)

Organize all your books, PDFs, and articles in a single, distraction-free library. Enhance comprehension with tools to explain, define, highlight, and translate passages. Listen to your content with natural-sounding voices and follow along as sentences are highlighted.

**Highlights:** Unified library for books, PDFs, and articles, Customizable reading experience (typeface, size, spacing), Passage explanation, definition, and note-taking, In-app translation, AI reading companion for summaries, Text-to-speech with adjustable speed, Highlighting of current sentence during listening

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

**In-app purchases:** none


## Frequently asked questions

### Is Reader AI free?

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

### Is purrpage. Double free?

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

### Do Reader AI or purrpage. Double have ads?

purrpage. Double shows ads; Reader AI does not.

### Which is updated more often, Reader AI or purrpage. Double?

Reader AI ships an update every 5 days, and purrpage. Double every 10 days. Most recently, Reader AI was updated on October 31, 2026 and purrpage. Double on November 5, 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.*