# ChatPDF vs Loopdrift

The clearest difference is in-app purchases: Loopdrift at none against ChatPDF's 2. Loopdrift also leads on ads (none vs shown). ChatPDF's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (15.6 vs 18.0). On price 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. Loopdrift asks for nothing beyond the download.

ChatPDF ships an update every 4 days, Loopdrift every 2 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ChatPDF | Loopdrift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (94 ratings)](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061/reviews)** | — |
| Number of ratings | **94** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 3 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ChatPDF GmbH](https://appshunter.io/developer/1711436087) | [Shenzhen Zhongshan Psychological Consultation Co., Ltd.](https://appshunter.io/developer/1704584180) |

## 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 |


### Loopdrift

[App page](https://appshunter.io/ios/app/loopdrift/id6770063349)

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

**In-app purchases:** none


## Frequently asked questions

### Is ChatPDF free?

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

### Is Loopdrift free?

Loopdrift is free to download, with no in-app purchases.

### Do ChatPDF or Loopdrift have ads?

ChatPDF shows ads; Loopdrift does not.

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

ChatPDF ships an update every 4 days, and Loopdrift every 2 months. Most recently, ChatPDF was updated on October 30, 2026 and Loopdrift on October 25, 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.*