# Big Reader vs AI PDF Reader

The clearest difference is iOS requirement: AI PDF Reader at 15.5 against Big Reader's 17. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Big Reader sells 2 in-app purchases, starting at $1.99 per month and AI PDF Reader sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Big Reader | AI PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 16 MB | 58 MB |
| Requires iOS | 17 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hassan Hattab](https://appshunter.io/developer/991737639) | [CodeCross](https://appshunter.io/developer/1660793254) |

## What reviewers say

### Big Reader

[App page](https://appshunter.io/ios/app/big-reader-read-everything/id6756084126)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $19.99 | per year |


### AI PDF Reader

[App page](https://appshunter.io/ios/app/ai-pdf-reader-chat-and-ask/id6761198287)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access to AI PDF Reader | $6.99 | per 7 days |
| Unlimited Access to AI PDF Reader | $19.99 | per month |


## Frequently asked questions

### Is Big Reader free?

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

### Is AI PDF Reader free?

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

### Do Big Reader or AI PDF Reader have ads?

Neither Big Reader nor AI PDF Reader shows ads.

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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.*