# 서울시립대 모바일 ID vs PDF Grader PRO

The clearest difference is price: 서울시립대 모바일 ID at Free against PDF Grader PRO's $4.99. 서울시립대 모바일 ID also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.6). PDF Grader PRO's advantage is update cadence (every 3 days vs every 4 months). On in-app purchases and device support there is nothing between them.

서울시립대 모바일 ID 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.

서울시립대 모바일 ID ships an update every 4 months, PDF Grader PRO every 3 days. The most recent releases landed on September 21, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 서울시립대 모바일 ID | PDF Grader PRO |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/id/id1171329284/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 6 MB | 12 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LOTECS CO.LTD](https://appshunter.io/developer/1695677197) | [Hyeonchan Yu](https://appshunter.io/developer/1857516231) |

## What reviewers say

### 서울시립대 모바일 ID

[App page](https://appshunter.io/ios/app/id/id1171329284)

This application serves as a mobile identification card for Seoul National University of Science and Technology. It allows users to utilize a QR code for access within the university and related institutions, functioning as a student or identification card. Login is seamless using existing academic system credentials.

**Highlights:** Mobile student ID, QR code authentication, Academic system login, ID card issuance, Settings menu

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

**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 서울시립대 모바일 ID free?

서울시립대 모바일 ID 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 서울시립대 모바일 ID or PDF Grader PRO have ads?

PDF Grader PRO shows ads; 서울시립대 모바일 ID does not.

### Which is updated more often, 서울시립대 모바일 ID or PDF Grader PRO?

서울시립대 모바일 ID ships an update every 4 months, and PDF Grader PRO every 3 days. Most recently, 서울시립대 모바일 ID was updated on September 21, 2026 and PDF Grader PRO on October 7, 2026.

---

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