# AI Reader vs Part 66+

The clearest difference is ads: Part 66+ at none against AI Reader's shown. AI Reader's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AI Reader ships an update every 10 days, Part 66+ fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AI Reader | Part 66+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (210 ratings)](https://appshunter.io/ios/app/ai-reader-read-aloud-pdf-book/id6754524209/reviews)** | — |
| Number of ratings | **210** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Ad-supported | — |
| Size | 45 MB | 10 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Hong Phuc](https://appshunter.io/developer/1519084763) | [Airworthiness Limited](https://appshunter.io/developer/1896336257) |

## What reviewers say

### AI Reader

[App page](https://appshunter.io/ios/app/ai-reader-read-aloud-pdf-book/id6754524209)

Transform any text, PDF, or eBook into an audiobook with realistic, human-like AI voices. Enjoy your entire library as a personal audio collection without ads or sign-up. Listen while multitasking or relaxing.

**Highlights:** Realistic AI text-to-speech voices, Convert eBooks, PDFs, and documents to audio, Highlight and replay sentences/words, Listen while commuting or working, No ads or sign-up required, Multiple human-sounding voice options

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

**In-app purchases:** none


### Part 66+

[App page](https://appshunter.io/ios/app/part-66-plus/id6799710774)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI Reader free?

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

### Is Part 66+ free?

Part 66+ is free to download, with no in-app purchases.

### Do AI Reader or Part 66+ have ads?

AI Reader shows ads; Part 66+ does not.

### Which is updated more often, AI Reader or Part 66+?

AI Reader ships an update every 10 days, and Part 66+ fortnightly. Most recently, AI Reader was updated on November 5, 2026 and Part 66+ on October 31, 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.*