# Summerizer vs Reader AI

The clearest difference is update cadence: Reader AI at every 5 days against Summerizer's every 2 weeks. Summerizer's advantage is 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. Summerizer sells 3 one-off in-app purchases and Reader AI sells 7 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Summerizer ships an update every 2 weeks, Reader AI every 5 days. The most recent releases landed on October 14, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Summerizer | Reader AI |
| --- | --- | --- |
| 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 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 114 MB | 63 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Naeem ul Haq](https://appshunter.io/developer/1864665857) | [江 刘](https://appshunter.io/developer/1672554088) |

## What reviewers say

### Summerizer

[App page](https://appshunter.io/ios/app/summerizer-book-summary/id6757116509)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 4 Credits | $1.99 | one-time |
| 10 Credits | $4.99 | one-time |
| 20 Credits | $9.99 | one-time |


### 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 |


## Frequently asked questions

### Is Summerizer free?

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

### Is Reader AI free?

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

### Do Summerizer or Reader AI have ads?

Neither Summerizer nor Reader AI shows ads.

### Which is updated more often, Summerizer or Reader AI?

Summerizer ships an update every 2 weeks, and Reader AI every 5 days. Most recently, Summerizer was updated on October 14, 2026 and Reader AI on October 28, 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.*