Chess Clock MaruMieruTimer vs ONE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chess Clock MaruMieruTimer
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“Oh no! Is it this late already?” Do you ever find yourself unconsciously spending hours on videos or social media? **Marumie-ru Timer** makes that “vanishing time” visible. With a single tap, switch between work and break—just like a chess clock. Maximize your focus, turn effort into daily results, and achieve your goals with zero unfinished tasks. Productivity and freedom, all in your hands. --- ## Features - **One-tap switch between work and break** Manage active and rest time visually with a chess-clock style system. Instantly grasp your time allocation at a glance. - **Time visualization** Clearly see exactly how much time you’ve spent, eliminating wasted minutes. - **Support for consistency** Daily records and analysis boost motivation. Small wins accumulate into big achievements. - **Free & simple** No hidden fees, no complicated setup. A free app you can use right away. - **Versatile use cases** From student study sessions to professional work, even workout lap timing—manage any kind of “time.” - **Choose your measurement mode** - **Timer (countdown):** Stay aware of time remaining until your goal. - **Stopwatch (count-up):** Track focused work sessions. Perfect for cooking, zero-second thinking drills, meditation, and more. - **Automatic recording for review** Log work time daily and monthly, track your growth, and analyze your habits with graphs. - **Simple & intuitive design** Big buttons, no clutter, no unnecessary features. Easy to use at a glance so you can dive straight into focus. --- ## Recommended for - **Those who want to avoid overlong breaks** - “Just 5 minutes…” turns into 30. - Can’t stop scrolling SNS. - YouTube autoplay eats away hours. - Hard to get back to work after a break. → Visualize your break time, quantify “idle time,” and smoothly switch back into work mode. - **Those who want to track progress numerically** No more vague “Did I really work that much today?” See your exact time allocation, discover your best work-rest rhythm, and keep tasks moving forward. - **Those who want to improve time management** - Always rushing deadlines. - Make plans but can’t follow through. - Poor time allocation leads to overtime. - Want to work more efficiently. → Set daily work-hour goals for structured time management and a calmer, more productive day. --- ## For Study & Learning Prepare for university entrance exams, high school tests, or certifications with a solid study routine. Use the timer for Pomodoro sessions, the stopwatch for deep focus. Record and analyze daily study time—consistency builds motivation and confidence. ## For Work & Productivity Whether remote work, freelancing, office tasks, or side jobs—boost efficiency, cut overtime, meet deadlines, and accelerate professional growth. By clearly separating “work” and “break,” you eliminate waste. Manage multiple tasks while keeping focus simple and sharp. Strong support for achieving your goals. ## For Hobbies & Self-Improvement From workouts and reading to creative projects and training, visualizing your time transforms routines into lasting habits. Your recorded data fuels motivation and helps you clear your schedule efficiently. With **Marumie-ru Timer**, discover smarter time use and accelerate your life!
ONE
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Not another to-do list. ONE Focus is a single-task focus timer for a deeper life. You commit to one thing at a time—nothing else on screen, nothing competing for your attention. WHY ONE FOCUS? • One thing only — no lists, no tabs, no clutter • Start in one line — type a title, press return, begin • Gentle accountability — a progress check-in every 45 minutes • Five-step progress — 0, 25, 50, 75, or 100%, with an optional note • Quiet by design — no streak anxiety, no gamification, no noise • Night quiet hours — no notifications between 22:00 and 09:00 • Minimal history — see what you've finished, nothing more HOW IT WORKS 1. Enter one thing and start 2. Stay with it — elapsed time keeps you honest 3. Respond to check-ins when prompted (or update progress anytime) 4. Mark complete when you're done 5. Move on to the next moment DESIGNED TO FEEL CALM Editorial Noir typography, generous whitespace, and champagne-gold accents. Dark-first. No feature bloat. No account required. Everything stays on your device. Built for focus, study, deep work, and everyday presence—reading to your child, cooking a meal, taking a walk, creating something meaningful, or simply being here. Download. Pick one thing. Live it fully.
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Verdict
The clearest difference is iOS requirement: Chess Clock MaruMieruTimer at 13.0 against ONE's 17.0. On price and in-app purchases 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.
| Parameter | Chess Clock MaruMieruTimer | ONE |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 weeks |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPhone — better |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 145 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | tomokazu akiduki | 骋飞 武 |
In-app purchases
Chess Clock MaruMieruTimer
No in-app purchases
ONE
No in-app purchases
Questions
Is Chess Clock MaruMieruTimer free?
Is ONE free?
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