# Study Ducky vs Koza

The clearest difference is in-app purchases: Koza at none against Study Ducky's 2. Koza also leads on ads (none vs shown) and update cadence (every 8 days vs every 4 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Study Ducky sells 2 in-app purchases, starting at $12.99 per month. Koza asks for nothing beyond the download.

Study Ducky ships an update every 4 weeks, Koza every 8 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Study Ducky | Koza |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/study-ducky/id6751804134/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 86 MB | 80 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Selimhan Altinpinar](https://appshunter.io/developer/1836901242) | [KOZA LLC](https://appshunter.io/developer/1845715206) |

## What reviewers say

### Study Ducky

[App page](https://appshunter.io/ios/app/study-ducky/id6751804134)

Manage your academic life with an intelligent assistant that helps you plan, track, and analyze your studies. Features include daily task management, focus timers, goal setting, and collaborative study spaces. Offers AI-powered tutoring, language learning, and relaxation recommendations.

**Highlights:** Daily, weekly, and monthly goal tracking, Customizable focus and Pomodoro timers, Class schedule and exam deadline management, In-depth performance statistics and analysis, Collaborative study groups and friend comparisons, AI Tutor for instant answers and language learning, Weekly movie, TV, and book recommendations

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Ducky | $12.99 | per month |
| Annual Premium Ducky | $109.99 | per year |


### Koza

[App page](https://appshunter.io/ios/app/koza-find-your-study-buddy/id6754465784)

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

**In-app purchases:** none


## Frequently asked questions

### Is Study Ducky free?

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

### Is Koza free?

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

### Do Study Ducky or Koza have ads?

Study Ducky shows ads; Koza does not.

### Which is updated more often, Study Ducky or Koza?

Study Ducky ships an update every 4 weeks, and Koza every 8 days. Most recently, Study Ducky was updated on October 24, 2026 and Koza on October 18, 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.*