# PDF Reader vs Cortex | AI Habit Tracker

The clearest difference is rating: Cortex | AI Habit Tracker at 5.0 against PDF Reader's 4.2. Cortex | AI Habit Tracker also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 4 months). PDF Reader's advantage is ratings volume (51 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Reader sells 3 in-app purchases, starting at $2.49 per 7 days. Cortex | AI Habit Tracker asks for nothing beyond the download.

Cortex | AI Habit Tracker holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: PDF Reader has 51 ratings behind it against 2, so its average is the more settled of the two.

PDF Reader ships an update every 4 months, Cortex | AI Habit Tracker every 3 weeks. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PDF Reader | Cortex | AI Habit Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (51 ratings)](https://appshunter.io/ios/app/pdf-reader-pdf-viewer-edit/id6448322721/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cortex-ai-habit-tracker/id6757570181/reviews)** |
| Number of ratings | **51** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 16 MB | 33 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Mohit Rudani](https://appshunter.io/developer/1673702969) | [Sean Dickson](https://appshunter.io/developer/1827191515) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-pdf-viewer-edit/id6448322721)

This application allows users to read, edit, and manage PDF files on their mobile devices. It offers offline viewing for PDFs, Word, Excel, and PowerPoint documents, along with features like bookmarking and file renaming. Enhance your productivity with this essential document management tool.

**Highlights:** View local PDF files, Load files from Files app, Save and rename PDF files, Share PDFs easily, Bookmark PDF pages, Offline document viewing, Dark Mode for reading

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly   1 Week | $2.49 | per 7 days |
| Monthly   1 Month | $5.99 | per month |
| Yearly   1 Year | $24.99 | per year |


### Cortex | AI Habit Tracker

[App page](https://appshunter.io/ios/app/cortex-ai-habit-tracker/id6757570181)

This app goes beyond simple checklists by combining daily habit tracking with AI-powered coaching. It analyzes your patterns to provide personalized recommendations, helping you understand why habits stick and improve your consistency.

**Highlights:** Daily habit logging with streaks, Calendar view for consistency, AI-powered personalized coaching, Journaling and notes for reflection, Analytics dashboard for performance, Dark mode design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader free?

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

### Is Cortex | AI Habit Tracker free?

Cortex | AI Habit Tracker is free to download, with no in-app purchases.

### Which has better reviews, PDF Reader or Cortex | AI Habit Tracker?

Cortex | AI Habit Tracker is rated higher. PDF Reader averages 4.2 out of 5 from 51 ratings, while Cortex | AI Habit Tracker averages 5.0 from 2 ratings.

### Do PDF Reader or Cortex | AI Habit Tracker have ads?

Both PDF Reader and Cortex | AI Habit Tracker show ads.

### Which is updated more often, PDF Reader or Cortex | AI Habit Tracker?

PDF Reader ships an update every 4 months, and Cortex | AI Habit Tracker every 3 weeks. Most recently, PDF Reader was updated on September 13, 2026 and Cortex | AI Habit Tracker on September 10, 2026.

---

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