# Foxycape AI Reader vs Castly

The clearest difference is device support: Foxycape AI Reader at 4 against Castly's 2. Foxycape AI Reader also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Foxycape AI Reader sells 5 in-app purchases, starting at $6.99 per 3 months and Castly sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Foxycape AI Reader ships an update every 10 days, Castly weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Foxycape AI Reader | Castly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/foxycape-ai-reader/id6501987109/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Freemium | — |
| Size | 55 MB | 29 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [成都铁飞鹰科技有限公司](https://appshunter.io/developer/1744147732) | [SlothEase](https://appshunter.io/developer/1816632091) |

## What reviewers say

### Foxycape AI Reader

[App page](https://appshunter.io/ios/app/foxycape-ai-reader/id6501987109)

This app offers AI-powered reading and research tools. It features zero-hallucination AI Q&A grounded in source text, full-text translation with terminology consistency, and a local-first privacy approach. Enjoy seamless reading with customizable layouts, TTS, and efficient book management.

**Highlights:** Zero-hallucination AI Q&A with source tracing, Full-text AI translation with terminology consistency, Local-first privacy with optional cloud sync, Integrated TTS read-aloud with highlighting, Batch book import and auto-categorization, Customizable reading layouts and themes, One-tap PDF image copying

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quarterly membership | $6.99 | per 3 months |
| Annual membership | $14.99 | per year |
| AI traffic pack 10M | $2.99 | one-time |
| AI traffic pack 50M | $14.99 | one-time |
| Lifetime membership | $44.99 | one-time |


### Castly

[App page](https://appshunter.io/ios/app/castly-ai-audiobook-reader/id6768542554)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Castly Pro Monthly | $9.99 | per month |
| Castly Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Foxycape AI Reader free?

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

### Is Castly free?

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

### Do Foxycape AI Reader or Castly have ads?

Neither Foxycape AI Reader nor Castly shows ads.

### Which is updated more often, Foxycape AI Reader or Castly?

Foxycape AI Reader ships an update every 10 days, and Castly weekly. Most recently, Foxycape AI Reader was updated on November 4, 2026 and Castly 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.*