hamahama vs 기니어스
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
hamahama
This app uses AI to accurately track your focused study time, automatically pausing when you're away from your desk. It generates study timelapses, provides detailed statistics, and allows you to compete with friends in study groups.
- AI-measured focused study time
- Automatic timer pausing
- Study timelapse generation
- Detailed study statistics
- Daily study goals
- Friend group competition
- Zoom study sessions
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hamahama: the AI timer that measures your real Lock-in time, so you can compete honestly with friends. The time the stopwatch kept running while you were in the bathroom. The time you scrolled your phone with the timer app open. You tell yourself it was an hour, but you really locked in for half of that. hamahama was built to end that lie. 1. Real Lock-in time, measured by AI - Using your camera, AI checks that you're actually locked in at your desk and counts only the time that's real. - Doze off, pick up your phone, or leave your seat, and the timer stops. - No need to hit pause yourself. The AI handles it. 2. A Lock-in planner that fills itself - Your Lock-in sessions are logged automatically in a 10-minute-block planner. Your day gets organized without writing a thing. - Tap a record to change the subject, or manually add sessions the AI couldn't measure. 3. Lock-in stats - See your Lock-in time and focus rate by day, week, and month, and compare with yesterday, last week, and last month. - Focus rate: shows what % of the time you sat down was real Lock-in time, and where your focus rate ranks among all users. - An hourly graph shows when you stay focused the longest. - Tap a date on the monthly calendar to jump straight to that day's record. - Lock-in streak: grows with every consecutive day you lock in for 10+ minutes. - See how much time you've put into each subject. 4. Weekly timetable - Set a recurring Lock-in schedule for each day of the week, with subjects. 5. Daily goal - Set today's Lock-in goal and see your progress right on the home screen. - If you forget to lock in, a reminder will nudge you first. 6. Lock-in timelapse - When you finish, today's Lock-in session is automatically turned into a timelapse video. - Your Lock-in timer is burned into the video, so you can watch your hours add up. - Videos are kept in the in-app vault for 3 days, and you can save them to Photos or share straight to Instagram. - Videos are created only on your phone. They are never stored on our servers. 7. Compete with friends on real Lock-in time - Create a private group with friends using an invite code, or find and join public groups of people preparing for the same exam through search and categories. - Group rankings are based only on AI-measured Lock-in time. Manually added time doesn't count. - Compare daily, weekly, and monthly rankings, your Lock-in time over the last 7 days, and the group average, all on one screen. - See who has put in how much today, and who's locking in right now. - Get notified when a friend in your group starts locking in. 8. Lock in together on cam - Pick a group from home and jump right in, or create a temporary room and invite friends. - Check yourself with a camera preview before you join. - Feel like you're sitting side by side in a quiet library, while AI measures each person's real Lock-in time. - Toggle your mic on/off and switch cameras smoothly. 9. Lock in solo, too - One tap to start from home, and AI measures your real Lock-in time automatically, even in solo mode. - Perfect for keeping promises to yourself at a café or at home. --- Recommended for - Anyone tired of stopwatch timers that let you fool yourself - Anyone who wants to answer "How focused was I today?" with real numbers - Anyone who wants a planner but finds writing everything down a hassle - Anyone who wants to keep a video record of a hard-working day - Students who want to compare real Lock-in time with friends - Exam takers who want to keep pace with others preparing for the same test through groups and cam sessions - Anyone who keeps reaching for their phone at a café or at home --- - Get started in 5 seconds with your Apple, Google, or Kakao account - All features are free - For questions, go to [Settings > Contact Us] in the app - Website: https://studyhama.com Only real Lock-in time. Together.
기니어스
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혼자 공부하면 자꾸 딴짓하게 되죠. 기니피그와 햄스터 친구들이 옆에서 같이 공부해주는 캠스터디 앱이에요. 말도 걸어주고, 집중하면 칭찬도 해주고, 친해지면 선물도 준답니다. ■ 같이 공부하는 동물 친구들 25마리의 캐릭터가 각자 방식대로 공부합니다. 필기하는 기니피그, 이불 속에서 노트북 하는 햄스터, 지하철에서 통학하며 공부하는 햄스터까지. 말을 걸면 대답도 해줘요. ■ 집중 시간 기록 타이머로 공부 시간을 재고, 달력에 쌓아둡니다. 잠금화면에서도 타이머가 보여요. ■ 할 일 관리 오늘 할 일을 적어두고 회의 중에도 체크할 수 있어요. 카테고리로 나누고 마감일도 정해두세요. ■ 친구와 함께 링크 하나로 친구를 초대해 같이 공부할 수 있어요. ■ 라운지 지금 공부 중인 사람들이 한 화면에 모여 있어요. 주간 랭킹으로 서로를 응원합니다. ■ 회원증 꾸미기 공부하면 포인트가 쌓이고, 동물 친구와 친해지면 선물을 받아요. 털색, 모자, 안경, 소지품으로 나만의 캐릭터를 만드세요. ■ 자작곡과 백색소음 동물 친구들이 만든 노래 9곡과 빗소리·모닥불 등을 공부하면서 들을 수 있어요.
Screenshots
Verdict
The clearest difference is ads: hamahama at none against 기니어스's shown. 기니어스's advantage is update cadence (every 6 days vs every 3 weeks) and review sentiment (98% vs 85%). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
hamahama ships an update every 3 weeks, 기니어스 every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | hamahama | 기니어스 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 85.2% of reviews | 97.5% of reviews — better |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 179 MB |
| Age rating | 4+ | 12+ |
| Developer | sangwon kwon | JIMIN LEE |
Customer experience
hamahama
기니어스
In-app purchases
hamahama
No in-app purchases
기니어스
No in-app purchases









