Do Less.
Achieve More.
Focus on the 20% of tasks that drive 80% of your progress.
A minimal timeboxing app designed to help you plan your day around high-impact work, stay focused, and build a sustainable routine.
- Laundry
- Shopping
- Scrolling social media
- Creating
- Playing games
- Napping
Your day, perfectly planned
Visual timeboxing that lets you mark and focus on your critical 20% tasks
Most productivity tools make you busier, not better.
To-do apps pile on tasks with no clarity on what's essential
Calendars look organized but don't reveal what matters most
Manual planning takes too much time and mental energy
What if planning felt light—and actually worked?
80/20 Manual Focus
Mark and prioritize your critical 20% tasks for maximum impact.
Distraction-Free Design
A calm, minimal interface that respects your attention and enhances focus.
Progress Insights
See your 80/20 ratio improve over time—no guilt, just growth.
Built for focus, not features
Every element is designed to help you identify and protect your highest-impact work.
Revolutionary Time Boxing
Unlike traditional calendars, CoreHour's 30-minute time boxes adapt to your rhythm. Drag, drop, and watch as your critical tasks automatically stand out.
- 30-minute focused time boxes
- Drag-and-drop with visual feedback
- Automatic deep work zone protection
Smart Prioritization
Stop guessing what matters. CoreHour helps you identify and focus on your 20% most impactful tasks through manual prioritization—putting you in control of what truly matters.
- Mark your critical 20% tasks for visual emphasis
- Clear visual indicators for task importance
- Focus on high-impact work during peak energy
Frequently asked questions
Built by Productivity Enthusiasts
Eason Chang
Developer
Carol Hsiao
Designer
Hi, we're the founders of Aburi Studio. We create awesome digital products for people like you.
We built CoreHour because we were tired of productivity tools that made us busier, not better.
Get updates, share feedback, and shape the future of CoreHour
Ready to reclaim your focus?
Join forward-thinking professionals who are done with busy work.
Launching August 2025 • Cross-device sync • No credit card required