# PDF OCR vs Undetectable AI

The clearest difference is review sentiment: PDF OCR at 100% against Undetectable AI's 0%. PDF OCR also leads on monetization model (free vs free with in-app purchases) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF OCR sells 3 in-app purchases, starting at $3.99 per month and Undetectable AI sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

PDF OCR ships an update every 3 weeks, Undetectable AI every 2 months. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | PDF OCR | Undetectable AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/pdf-ocr-scanner-and-editor/id6738633268/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 14 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Layerz Corp.](https://appshunter.io/developer/1617729865) | [HAMZA HARDOULI](https://appshunter.io/developer/1644917930) |

## What reviewers say

### PDF OCR

[App page](https://appshunter.io/ios/app/pdf-ocr-scanner-and-editor/id6738633268)

This app offers a comprehensive suite of tools for managing PDF files. It allows you to extract text using OCR, convert PDFs to images, secure documents with passwords, and merge or split files. It also enables creating PDFs from images and converting webpages into PDF format, all while ensuring your data remains private through offline processing.

**Highlights:** Extract text with OCR, Convert PDF to images, Secure PDFs with passwords, Merge or split PDFs, Create PDFs from images, Convert webpages to PDF, Compress file size

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF OCR Pro Monthly | $3.99 | per month |
| PDF OCR Pro Yearly | $19.99 | per year |
| PDF OCR Pro Lifetime | $49.99 | one-time |


### Undetectable AI

[App page](https://appshunter.io/ios/app/undetectable-ai-humanize-text/id6739940766)

Transform AI-generated text into natural, human-like writing that bypasses AI detectors. This tool helps ensure your content remains authentic and undetectable by major detection systems. It also includes a built-in AI scanner to verify your text before submission.

**Highlights:** Bypass AI detection instantly, Humanize any text, Built-in AI detector, One-tap humanization, Advanced rewriting models, Preserve original meaning

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undetectable AI Premium | $3.99 | per month |
| Undetectable AI Premium | $24.99 | per year |


## Frequently asked questions

### Is PDF OCR free?

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

### Is Undetectable AI free?

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

### Do PDF OCR or Undetectable AI have ads?

Neither PDF OCR nor Undetectable AI shows ads.

### Which is updated more often, PDF OCR or Undetectable AI?

PDF OCR ships an update every 3 weeks, and Undetectable AI every 2 months. Most recently, PDF OCR was updated on October 25, 2026 and Undetectable AI on October 20, 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.*