# CAU e vs PDF Grader PRO

The clearest difference is price: CAU e at Free against PDF Grader PRO's $4.99. CAU e also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.6). PDF Grader PRO's advantage is update cadence (every 3 days vs every 10 months). On in-app purchases and device support there is nothing between them.

CAU e is free to download; PDF Grader PRO costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CAU e ships an update every 10 months, PDF Grader PRO every 3 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CAU e | PDF Grader PRO |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 51 MB | 12 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [University of Chung-Ang](https://appshunter.io/developer/524934084) | [Hyeonchan Yu](https://appshunter.io/developer/1857516231) |

## What reviewers say

### CAU e

[App page](https://appshunter.io/ios/app/cau-e-advisor/id1554194900)

This app supports university students from admission to graduation and employment. It integrates academic and student activity data with AI to provide personalized services for planning, learning, and career preparation.

**Highlights:** AI-driven major map planning, Academic activity management, Coursework and study material support, Integrated student life portfolio, Personalized academic alerts, AI chatbot integration

**In-app purchases:** none


### PDF Grader PRO

[App page](https://appshunter.io/ios/app/pdf-grader-pro/id6755943630)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CAU e free?

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

### Is PDF Grader PRO free?

PDF Grader PRO costs $4.99, with no in-app purchases.

### Do CAU e or PDF Grader PRO have ads?

PDF Grader PRO shows ads; CAU e does not.

### Which is updated more often, CAU e or PDF Grader PRO?

CAU e ships an update every 10 months, and PDF Grader PRO every 3 days. Most recently, CAU e was updated on October 5, 2026 and PDF Grader PRO on October 7, 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.*