# 순공시간 vs StudyDay

The clearest difference is in-app purchases: StudyDay at none against 순공시간's 2. StudyDay also leads on update cadence (every 2 weeks vs every 2 months). 순공시간's advantage is ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.

Both are free to download. 순공시간 sells 2 in-app purchases, starting at $1.99 per month. StudyDay asks for nothing beyond the download.

순공시간 ships an update every 2 months, StudyDay every 2 weeks. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 순공시간 | StudyDay |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 34 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yerin lee](https://appshunter.io/developer/1819443165) | [Jinyoung Lee](https://appshunter.io/developer/1250427645) |

## What reviewers say

### 순공시간

[App page](https://appshunter.io/ios/app/id6748931524)

This app helps you plan your study sessions and track focused learning time. It allows you to set daily subjects, create to-do lists, and use a timer that only records actual study time. Achieve your academic goals with a clean, minimalist interface designed for smooth study flow.

**Highlights:** Subject-specific study planning, Study task checklist, Automatic focus time recording, Daily cumulative study time tracking, D-Day setting for exams, Minimalist interface

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 순공시간 프리미엄 (월간 구독) | $1.99 | per month |
| PureFocus Premium (Yearly) | $14.99 | per year |


### StudyDay

[App page](https://appshunter.io/ios/app/studyday-pomodoro-timer/id6772432314)

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

**In-app purchases:** none


## Frequently asked questions

### Is 순공시간 free?

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

### Is StudyDay free?

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

### Do 순공시간 or StudyDay have ads?

StudyDay shows ads; 순공시간 does not.

### Which is updated more often, 순공시간 or StudyDay?

순공시간 ships an update every 2 months, and StudyDay every 2 weeks. Most recently, 순공시간 was updated on October 5, 2026 and StudyDay on October 13, 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.*