# PDF Reflow vs Cortex

The clearest difference is update cadence: PDF Reflow at every 3 weeks against Cortex's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Reflow sells 1 one-off in-app purchase and Cortex sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PDF Reflow ships an update every 3 weeks, Cortex every 4 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | PDF Reflow | Cortex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (24 ratings)](https://appshunter.io/ios/app/pdf-reflow/id1461144444/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 3 MB | 84 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppBlit LLC](https://appshunter.io/developer/295536769) | [Ippocode Technologies LLP](https://appshunter.io/developer/1852421273) |

## What reviewers say

### PDF Reflow

[App page](https://appshunter.io/ios/app/pdf-reflow/id1461144444)

Read PDF and Word documents on your phone with a mobile-optimized layout. It reformats documents to fit your screen width, preserving original fonts, colors, and graphics. Features include text search, selection, and adjustable text size.

**Highlights:** Mobile-optimized PDF and Word reading, Reflows text to fit screen width, Preserves original fonts, colors, and graphics, Text search and selection, Adjustable text size up to 300%

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Reflow PRO | $7.99 | one-time |


### Cortex

[App page](https://appshunter.io/ios/app/cortex-local-ai/id6757537386)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cortex Pro | $19.99 | one-time |


## Frequently asked questions

### Is PDF Reflow free?

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

### Is Cortex free?

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

### Do PDF Reflow or Cortex have ads?

Neither PDF Reflow nor Cortex shows ads.

### Which is updated more often, PDF Reflow or Cortex?

PDF Reflow ships an update every 3 weeks, and Cortex every 4 months. Most recently, PDF Reflow was updated on September 21, 2026 and Cortex on September 14, 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.*