hamahama vs ppotaa
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
Read full descriptionHide full description
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.
ppotaa
This app helps you build study habits by connecting you with friends in virtual classrooms. Track your progress, customize your avatar, and stay motivated with rewards and a mood calendar.
- Social study rooms with friends
- Study time tracking by subject
- Daily, weekly, monthly stats
- To-do list management
- Mood calendar and satisfaction logging
- Character and desk customization
- Study streak and star rewards
Read full descriptionHide full description
ppotaa is a social study timer where you study with friends, track your study time, and customize your character, making it fun to build a study habit. [Study Together in Study Rooms] • Join a classroom as your own character and study alongside friends. • Cheer each other on in chat, and give a dozing friend a "Nudge" to wake them up. • Create or join rooms by purpose: Exam prep, Job search, Civil service, Certification, Hobby, and more. [Study Timer & Stats] • Track your study time by subject. • See your progress at a glance with daily, weekly, and monthly stats. [Plan Your Day] • Manage your daily to-dos with a simple checklist. [Mood Calendar] • Log how satisfied you felt after each study day. • Check your monthly mood right from the home screen widget. [Customize Your Character] • Style your character and desk just the way you like. • Spend the stars you've earned to send gifts to friends. [Stay Motivated] • Watch your habit grow with your study streak. • Earn star rewards based on how long you study. Start building a fun study habit with ppotaa today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: hamahama at none against ppotaa's 5. hamahama also leads on ads (none vs shown). ppotaa's advantage is review sentiment (100% vs 85%). On price, update cadence, 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. ppotaa sells 5 in-app purchases, starting at $3.99 per month. hamahama asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | hamahama | ppotaa |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (1 ratings) — better |
| Positive reviews | 85.2% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | sangwon kwon | Fluffy Lab |
Customer experience
hamahama
ppotaa
In-app purchases
hamahama
No in-app purchases
ppotaa
- Monthly$3.991 Month
- 100 Stars$0.99
- 350 Stars$2.99
- 750 Stars$5.99
Show 1 moreShow fewer
- 1,800 Stars$12.99








