# ChatPDF vs Yap

The clearest difference is ads: Yap at none against ChatPDF's shown. ChatPDF's advantage is update cadence (every 4 days vs every 5 weeks) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ChatPDF sells 2 in-app purchases, starting at $14.99 per month and Yap sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ChatPDF ships an update every 4 days, Yap every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ChatPDF | Yap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (92 ratings)](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061/reviews)** | — |
| Number of ratings | **92** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 30 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ChatPDF GmbH](https://appshunter.io/developer/1711436087) | [MoStudios LLC](https://appshunter.io/developer/1832227764) |

## What reviewers say

### ChatPDF

[App page](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061)

This AI-powered tool allows you to ask questions and get summaries directly from your PDF documents. It supports multiple files, OCR, and multilingual interactions, making complex information easily accessible.

**Highlights:** Instant answers from PDFs, Quick document summaries, Chat with multiple PDFs, OCR for scanned documents, Multilingual support, Cross-device access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plus Subscription | $14.99 | per month |
| ChatPDF Yearly Plus Plan | $89.99 | per year |


### Yap

[App page](https://appshunter.io/ios/app/yap-voice-notes/id6781500739)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yap Pro Monthly | $12.99 | per month |


## Frequently asked questions

### Is ChatPDF free?

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

### Is Yap free?

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

### Do ChatPDF or Yap have ads?

ChatPDF shows ads; Yap does not.

### Which is updated more often, ChatPDF or Yap?

ChatPDF ships an update every 4 days, and Yap every 5 weeks. Most recently, ChatPDF was updated on October 24, 2026 and Yap on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*