# ChatPDF AI vs Resum

The clearest difference is device support: ChatPDF AI at 3 against Resum's 1. ChatPDF AI also leads on iOS requirement (15.5 vs 26.0). On price, update cadence, ads and in-app purchases 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 Resum sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ChatPDF AI ships an update every 9 days, Resum every 10 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | ChatPDF AI | Resum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 days |
| Size | 100 MB | 9 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [nimet oz](https://appshunter.io/developer/1861573318) | [Maksim Kuznetsov](https://appshunter.io/developer/1730351072) |

## 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 |


### Resum

[App page](https://appshunter.io/ios/app/resum-voice-notes-to-text/id6806599284)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Resum Pro — Monthly | $6.99 | per month |
| Resum Pro — Yearly | $39.99 | per year |


## Frequently asked questions

### Is ChatPDF AI free?

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

### Is Resum free?

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

### Do ChatPDF AI or Resum have ads?

Neither ChatPDF AI nor Resum shows ads.

### Which is updated more often, ChatPDF AI or Resum?

ChatPDF AI ships an update every 9 days, and Resum every 10 days. Most recently, ChatPDF AI was updated on November 5, 2026 and Resum on November 6, 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.*