# 旦挞 vs Custom QR Code Maker & Scan

The clearest difference is in-app purchases: 旦挞 at none against Custom QR Code Maker & Scan's 2. 旦挞 also leads on device support (4 vs 1). Custom QR Code Maker & Scan's advantage is update cadence (every 3 days vs fortnightly). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Custom QR Code Maker & Scan sells 2 in-app purchases, starting at $3.99 per month. 旦挞 asks for nothing beyond the download.

旦挞 ships an update fortnightly, Custom QR Code Maker & Scan every 3 days. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 旦挞 | Custom QR Code Maker & Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (18 ratings)](https://appshunter.io/ios/app/id1568629997/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free | — |
| Size | 34 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [行健 赵](https://appshunter.io/developer/1727987356) | [可 吴](https://appshunter.io/developer/1854274317) |

## What reviewers say

### 旦挞

[App page](https://appshunter.io/ios/app/id1568629997)

This app provides a comprehensive suite of campus services for university students, including managing campus card balances, dormitory power, and dining hall queues. It also offers access to class schedules, library capacity, exam information, and campus announcements. Additionally, it features an anonymous forum for discussions and a platform for course reviews.

**Highlights:** Campus card balance and transaction history, Dormitory power and dining hall queue status, Class schedules and exam information, Anonymous campus forum, Course reviews and ratings, Campus announcements and shuttle schedules

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Custom QR Code Maker & Scan

[App page](https://appshunter.io/ios/app/custom-qr-code-maker-and-scan/id6799589471)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QR Studio Pro — Monthly | $3.99 | per month |
| QR Studio Pro — Yearly | $19.99 | per year |


## Frequently asked questions

### Is 旦挞 free?

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

### Is Custom QR Code Maker & Scan free?

Custom QR Code Maker & Scan is free to download, with in-app purchases available.

### Do 旦挞 or Custom QR Code Maker & Scan have ads?

Neither 旦挞 nor Custom QR Code Maker & Scan shows ads.

### Which is updated more often, 旦挞 or Custom QR Code Maker & Scan?

旦挞 ships an update fortnightly, and Custom QR Code Maker & Scan every 3 days. Most recently, 旦挞 was updated on October 3, 2026 and Custom QR Code Maker & Scan on October 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.*