# ExplainThisDoc vs Paperix

The clearest difference is in-app purchases: Paperix at none against ExplainThisDoc's 3. ExplainThisDoc's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ExplainThisDoc sells 3 one-off in-app purchases. Paperix asks for nothing beyond the download.

ExplainThisDoc ships an update every 3 days, Paperix weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ExplainThisDoc | Paperix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/paperix-pdf-secure-and-local/id6770402925/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | — | Free |
| Size | 90 MB | 10 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Julian Heger](https://appshunter.io/developer/1874584074) | [Abhijit Bansal](https://appshunter.io/developer/1896740056) |

## What reviewers say

### ExplainThisDoc

[App page](https://appshunter.io/ios/app/explainthisdoc-pdf-and-archive/id6758720729)

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Credits | $2.99 | one-time |
| 50 Credits | $24.99 | one-time |
| 200 Credits | $69.99 | one-time |


### Paperix

[App page](https://appshunter.io/ios/app/paperix-pdf-secure-and-local/id6770402925)

This app offers a free, on-device document scanner with OCR and AI capabilities. It allows for secure scanning, editing, and analysis of documents without subscriptions or cloud storage. Keep your sensitive information private and accessible only on your device.

**Highlights:** One-tap multi-page scanning with auto edge-detect, On-device OCR for searchable PDFs, AI-powered document analysis and Q&A, Sign, fill, and mark up documents, Import from Photos and Files, Organize with folders and sorting, Extract text from images

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

**In-app purchases:** none


## Frequently asked questions

### Is ExplainThisDoc free?

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

### Is Paperix free?

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

### Do ExplainThisDoc or Paperix have ads?

Neither ExplainThisDoc nor Paperix shows ads.

### Which is updated more often, ExplainThisDoc or Paperix?

ExplainThisDoc ships an update every 3 days, and Paperix weekly. Most recently, ExplainThisDoc was updated on October 28, 2026 and Paperix on October 24, 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.*