# ChatPDF AI vs MemoryAI Voice

The clearest difference is iOS requirement: ChatPDF AI at 15.5 against MemoryAI Voice's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatPDF AI sells 5 in-app purchases, starting at $4.99 per 7 days and MemoryAI Voice sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ChatPDF AI | MemoryAI Voice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Size | 100 MB | 17 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [nimet oz](https://appshunter.io/developer/1861573318) | [Dmitry Senchikhin](https://appshunter.io/developer/1606158723) |

## What reviewers say

### ChatPDF AI

[App page](https://appshunter.io/ios/app/chatpdf-ai-chat-pdf-document/id6759845164)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Weekly Pro | $6.99 | per 7 days |
| Monthly Pro | $19.99 | per month |
| Yearly Pro | $44.99 | per year |
| Yearly Pro | $89.99 | per year |


### MemoryAI Voice

[App page](https://appshunter.io/ios/app/memoryai-voice/id6813024186)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $44.99 | per year |
| Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is ChatPDF AI free?

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

### Is MemoryAI Voice free?

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

### Do ChatPDF AI or MemoryAI Voice have ads?

Neither ChatPDF AI nor MemoryAI Voice 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.*