# ProPay Mobile vs StudyDuck

The clearest difference is in-app purchases: ProPay Mobile at none against StudyDuck's 3. ProPay Mobile also leads on update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. StudyDuck sells 3 in-app purchases, starting at $1.99 per month. ProPay Mobile asks for nothing beyond the download.

ProPay Mobile ships an update every 6 days, StudyDuck every 2 weeks. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ProPay Mobile | StudyDuck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/studyduck-ai-quiz-and-study/id6746414094/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 34 MB | 38 MB |
| Requires iOS | 15.9 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ana Zazadze](https://appshunter.io/developer/1745059423) | [Haluk AYTIS](https://appshunter.io/developer/1816723177) |

## What reviewers say

### ProPay Mobile

[App page](https://appshunter.io/ios/app/propay-mobile/id6743000027)

**Features:** macOS Compatibility

**In-app purchases:** none


### StudyDuck

[App page](https://appshunter.io/ios/app/studyduck-ai-quiz-and-study/id6746414094)

Transform your study materials into interactive quizzes. Upload PDFs, organize notes into custom groups, and let AI generate personalized study sessions. Track your progress and master your subjects with this efficient learning tool.

**Highlights:** Create quizzes from PDF notes, Organize notes into groups, Automated quiz generation, Personalized learning support, Dark mode, Quiz history tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Üyelik – Aylık | $1.99 | per month |
| Yıllık üyelik | $9.99 | per year |
| Premium access | $4.99 | one-time |


## Frequently asked questions

### Is ProPay Mobile free?

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

### Is StudyDuck free?

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

### Do ProPay Mobile or StudyDuck have ads?

Neither ProPay Mobile nor StudyDuck shows ads.

### Which is updated more often, ProPay Mobile or StudyDuck?

ProPay Mobile ships an update every 6 days, and StudyDuck every 2 weeks. Most recently, ProPay Mobile was updated on October 11, 2026 and StudyDuck on October 6, 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.*