Just3

Youngbin Ha

About this app

Stop managing tasks. Start finishing what matters.

Just3 is built on one principle: you only need to do 3 things today. Not 10, not 20 — just 3. Pick the ones that actually move the needle, block time for them on your calendar, and follow through.

HOW IT WORKS

Brain Dump — Clear your head by dumping everything on your mind. No structure needed. Just write it all down.

Pick Your Top 3 — Tap to select the 3 tasks that matter most today. Only 3 slots. Choose wisely.

Time Box — Assign each task a start time and duration. Set reminders and alarms so nothing slips through.

Sync to Calendar — Your tasks are written directly to your device calendar. No manual export, no sync button. They appear instantly in Google Calendar, Samsung Calendar, or whatever calendar app you use.

Review — At the end of the day, mark tasks done and log how long they actually took. Your estimates get sharper over time.

FEATURES

• Brain Dump with swipe-to-delete, multi-select, and drag-to-reorder
• Big 3 selection with rank badges (1, 2, 3)
• Time boxing with custom duration and start time picker
• Up to 3 notification reminders per task
• Up to 3 alarms per task (fires at exact start time)
• Direct CalendarContract sync — no OAuth, no Google account required
• Activity heatmap — 12 weeks of completion history at a glance
• Streak counter and monthly success rate

PRIVACY

Just3 stores everything locally on your device. No account required. No data sent to any server. Calendar access is used only to write your tasks to your device calendar.

What’s new

Welcome to the Just3 open beta!

Just3 helps you focus on the 3 tasks that matter most, every day.

• Brain dump everything on your mind, then pick your Top 3
• Time-box each task and sync it with your Google Calendar
• Get reminders and alarms so you never miss what matters
• Track your daily streak and completion rate

This is our first open testing release — try it out and let us know what you think or run into!