Focus Timer vs Koku
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Focus Timer
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Transform your productivity with Focus Timer. Focus Timer uses the proven Pomodoro Technique to help you break work into focused intervals, separated by short breaks. Build healthy work habits, prevent burnout, and maximize your output every day. Key Features: • Customizable focus sessions and smart breaks • Focus streak tracking to build consistency • Task insights to see where your time goes • Achievement badges to stay motivated • Daily and weekly productivity statistics • Beautiful, distraction-free interface • Works fully offline Premium Features: • Full focus calendar with monthly navigation • Best streak records and advanced analytics • Task productivity breakdown by project • Custom timer durations from 1 to 180 minutes • Daily focus reminder notifications • Detailed weekly trends and daily activity charts Perfect for students, professionals, freelancers, writers, and anyone looking to improve focus and productivity. Terms of Use (EULA): https://legal.timesleap.com/focus-timer-terms-of-use.html Download Focus Timer today and start building better work habits!
Koku
This app helps you focus on tasks with customizable work and rest intervals. It offers a simple, distraction-free interface and integrates with your home screen and Apple Watch for easy access and control. Enjoy deep work without accounts, streaks, or subscriptions.
- Customizable focus and rest sessions
- Classic Pomodoro rhythm option
- Home Screen widget for quick access
- Live Activities on lock screen
- Apple Watch companion app
- Minimalist, distraction-free design
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Koku is a focus timer for deep work. Focus. Rest. Repeat. Set your own session lengths or use the classic rhythm - twenty-five minutes of focus, five minutes of rest, a longer break every four sessions. Each minute is a dot. Watch them fill. - No accounts. - No streaks. - No subscriptions. Just time, and the work in front of you. Add Koku to your Home Screen for quick access - start, pause, and skip sessions right from the widget. Keep the timer visible on your lock screen with Live Activities. Koku also includes an Apple Watch companion app that works with the iPhone app, so you can check your timer and control sessions from your wrist. Designed for iPhone, with an Apple Watch companion. Light and dark mode. Works in any language. Koku (刻) is the Japanese word for a moment of time.
Screenshots
Verdict
The clearest difference is in-app purchases: Koku at none against Focus Timer's 4. Focus Timer's advantage is iOS requirement (17.0 vs 26.4). On price, update cadence, ads 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. Focus Timer sells 4 in-app purchases, starting at $1.99 per 7 days. Koku asks for nothing beyond the download.
Focus Timer ships an update weekly, Koku every 3 days. Both last shipped on October 31, 2026.
| Parameter | Focus Timer | Koku |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 26.4 |
| Further details — not scored | ||
| Size | 3 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Chengdu Times Leap Technology Co., Ltd. | Rodolfo Alberto Lopez Terriquez |
In-app purchases
Focus Timer
- Focus Timer Premium Weekly$1.997 Days
- Focus Timer Premium Monthly$4.991 Month
- Focus Timer Premium Quarterly$9.993 Months
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- Focus Timer Premium Yearly$19.991 Year
Koku
No in-app purchases









