# studien(스터디언) vs Deep Time for deep work

The clearest difference is in-app purchases: studien(스터디언) at none against Deep Time for deep work's 1. Deep Time for deep work's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Deep Time for deep work sells 1 one-off in-app purchase. studien(스터디언) asks for nothing beyond the download.

studien(스터디언) ships an update every 2 days, Deep Time for deep work every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | studien(스터디언) | Deep Time for deep work |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Free | — |
| Size | 25 MB | 125 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rho changjun](https://appshunter.io/developer/6782855349) | [Jongok Lee](https://appshunter.io/developer/1896577649) |

## What reviewers say

### studien(스터디언)

[App page](https://appshunter.io/ios/app/studien/id6789174316)

This app uses a gamified approach to boost focus and productivity. Track your study sessions with a Pomodoro timer or stopwatch and discover unique planets based on your concentration time. Collect these discoveries in your personal catalog.

**Highlights:** Pomodoro timer with customizable intervals, Stopwatch for flexible time tracking, Gamified planet discovery based on focus time, Personalized planet catalog, Daily goal tracking and progress visualization

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

**In-app purchases:** none


### Deep Time for deep work

[App page](https://appshunter.io/ios/app/deep-time-for-deep-work/id6795119042)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep Time Pro | $3.99 | one-time |


## Frequently asked questions

### Is studien(스터디언) free?

studien(스터디언) is free to download, with no in-app purchases.

### Is Deep Time for deep work free?

Deep Time for deep work is free to download, with in-app purchases available.

### Do studien(스터디언) or Deep Time for deep work have ads?

Neither studien(스터디언) nor Deep Time for deep work shows ads.

### Which is updated more often, studien(스터디언) or Deep Time for deep work?

studien(스터디언) ships an update every 2 days, and Deep Time for deep work every 4 days. Most recently, studien(스터디언) was updated on October 31, 2026 and Deep Time for deep work on October 31, 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.*