순공시간 vs StudyDay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
순공시간
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.
- Subject-specific study planning
- Study task checklist
- Automatic focus time recording
- Daily cumulative study time tracking
- D-Day setting for exams
- Minimalist interface
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공부 계획과 타이머, 그리고 집중. 순공시간은 공부의 흐름을 방해하지 않는 조용한 공부 루틴 앱입니다. 공부를 시작하기 전, 오늘의 과목을 정하고 각 과목별로 해야 할 공부를 적어보세요. 타이머를 실행하면 집중한 시간만 기록되고, 하루 공부가 자연스럽게 쌓이기 시작합니다. - 과목별 공부 계획 작성 - 공부 목록 체크 - 타이머로 순공시간 자동 기록 - 하루 누적 시간 확인 - 시험이나 목표일을 위한 D-Day 설정 - 이전 계획 가져오기 기능 - 깔끔하고 미니멀한 화면 구성 순공시간은 복잡한 기능 없이 공부 흐름만 부드럽게 이어주는 데 집중했어요. 수능, 자격증, 자율 학습까지 공부 루틴이 필요한 누구에게나 어울립니다. 오늘 공부, 지금 바로 순공시간으로 시작해보세요. 이용약관: https://yerin719.github.io/terms-and-privacy/study_log_terms_of_service.html
StudyDay
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Study timer & focus planner for students and exam takers — track every subject, hit your study goals. StudyDay: Study Timer & Log is a simple, beautiful study tracker built for students and exam takers. Tap to start a stopwatch for any subject, stop when you're done, and your time is saved automatically. No setup, no complexity. KEY FEATURES • Subject Timer — One tap starts a stopwatch for any subject. Switch subjects anytime; the previous one stops automatically. • Monthly Calendar — See which days you studied at a glance. Tap any day to jump straight to the timer. • Study Stickers — After each session, pick a sticker that matches your mood. Your calendar fills up with small victories. • Detailed Statistics — View your study time by day, week, or month. A bar chart shows your weekly rhythm; a donut chart breaks down time by subject. • Manual Entry — Forgot to start the timer? Enter time directly for any subject and date. • Subject Management — Add as many subjects as you need, each with its own color, so your data is always organized. DESIGNED FOR SIMPLICITY No account required. No internet connection needed. All your data stays on your device — private, always. Whether you're preparing for an exam, tracking daily study habits, or just curious how much time you spend on each subject, StudyDay gives you the clarity you need.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | 순공시간 | StudyDay |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | yerin lee | Jinyoung Lee |
In-app purchases
순공시간
- 순공시간 프리미엄 (월간 구독)$1.991 Month
- PureFocus Premium (Yearly)$14.991 Year
StudyDay
No in-app purchases








