# Daodian vs studien(스터디언)

The clearest difference is in-app purchases: studien(스터디언) at none against Daodian's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Daodian sells 4 in-app purchases, starting at $2.99 per month. studien(스터디언) asks for nothing beyond the download.

Daodian ships an update daily, studien(스터디언) every 2 days. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Daodian | studien(스터디언) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Monetization | — | Free |
| Size | 5 MB | 25 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [俊 曾](https://appshunter.io/developer/1783496421) | [Rho changjun](https://appshunter.io/developer/6782855349) |

## What reviewers say

### Daodian

[App page](https://appshunter.io/ios/app/daodian-app-time-limits/id6761649459)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $2.99 | per month |
| Premium | $5.99 | per month |
| Standard Annual | $19.99 | per year |
| Premium Annual | $39.99 | per year |


### 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


## Frequently asked questions

### Is Daodian free?

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

### Is studien(스터디언) free?

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

### Do Daodian or studien(스터디언) have ads?

Neither Daodian nor studien(스터디언) shows ads.

### Which is updated more often, Daodian or studien(스터디언)?

Daodian ships an update daily, and studien(스터디언) every 2 days. Most recently, Daodian was updated on September 30, 2026 and studien(스터디언) on October 8, 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.*