Study Timer vs Kotsumi
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Study Timer
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Product Description: This app is a minimalist study tracker for users who want focus instead of feature overload. The interface is deliberately divided into only two sections: - Tracker: A large clock shows exactly how long you have been studying. With a single Play/Pause button, you can start or stop the time tracking instantly. No menus, no distractions, no setup. - Statistics: A visual daily overview shows your study time in blue and your breaks in red. This lets you immediately recognize your actual learning behavior and optimize your concentration phases. Concept: Focus on what matters: The app measures only what counts โ your learning behavior. Ideal for pupils, students, and anyone who wants to study in a structured and measurable way.
Kotsumi
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Turn your study plans into focused sessions. Kotsumi brings a focus timer, daily planner, personal notebooks, and shared study rooms into one calm space. Whether you're preparing for an exam, working through homework, or building a study routine, take it one session at a time. FIND YOUR FOCUS Choose a timed focus session with breaks, or study at your own pace with an open-ended session. Start with a task in mind and see the time you put in. MAKE YOUR PLAN YOUR OWN Organize daily tasks and keep notes in your notebooks. Add stickers and study icons to give your planner a personal touch. STUDY TOGETHER Join study rooms, chat with members, and take part in shared focus sessions. Optional room challenges give you another way to work toward a goal together. SEE YOUR PROGRESS Look back on your study history, explore your statistics, and follow your streaks. Notice the sessions that add up over time. PERSONALIZE AS YOU GO Earn Kotsu Coins through studying and use them to personalize your experience. Coins are earned in the app and cannot be purchased for real money. CHOOSE WHAT YOU SHARE Manage your profile visibility and decide what to share through Study Updates. Report content, block accounts, and delete your account from Settings. A little planning. A focused session. Time well spent. Kotsumi is currently available in English.
Screenshots
Verdict
The clearest difference is in-app purchases: Kotsumi at none against Study Timer's 1. On price and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Study Timer sells 1 one-off in-app purchase. Kotsumi asks for nothing beyond the download.
| Parameter | Study Timer | Kotsumi |
|---|---|---|
| Price | Free | Free |
| Ads | โ | No |
| In-app purchases | Yes | No โ better |
| Devices | โ | iPhone โ better |
| Requires iOS | 26.2 | 26.0 โ better |
| Further details โ not scored | ||
| Size | 7 MB | 98 MB |
| Age rating | 4+ | 12+ |
| Developer | RAPHAEL ELIAS HARTEL | Sticker Mori |
In-app purchases
Study Timer
- Premium$2.99
Kotsumi
No in-app purchases









