🔶 Intro
See your focus turn into visible progress.
stac is a visual focus timer that helps you stay focused and watch your world grow over time.

⏱️ Simple Focus, No Friction
Start instantly. No setup, no friction.
• Clean and minimal design
• Track study and work sessions
• Distraction-free experience
👉 A flexible focus timer for study, work, and daily habits. (Pomodoro-style supported)

🧱 Turn Time into Progress
Every 10 minutes becomes progress.
10 minutes of focus = 1 Brick
• Earn bricks and build your world
• See your effort come to life

🌍 Build Your World
Your focus creates change.
• Progress from early stages to advanced environments
• Experience visible growth as you stay consistent
• Feel your progress, not just track it

🏆 Stay Consistent
Build habits that last.
• Track your streaks
• Unlock achievements
• Grow through leagues and levels

🤝 Focus Together
You’re not alone.
• Join global progress
• Contribute alongside others
• Stay motivated through shared effort

🔒 Privacy First
• No detailed study content shared
• Minimal public data
• Safe and pressure-free environment

💡 Built for Real Life
Use it as a study timer, productivity timer, or habit tracker.
Ideal for students, professionals, and anyone who prefers a simple, distraction-free focus experience.

🚀 Get Started
Focus better.
Build your world.
Stack your time with stac.

❗Focus Guard Notice

STAC uses the Android AccessibilityService API to provide the Focus Guard feature. When a user enables Focus Guard and starts a focus session, STAC detects the currently opened app. If another app is opened during the active focus session, STAC displays a blocking screen and guides the user back to STAC to continue focusing.

STAC does not read, collect, store, or share screen content, typed text, passwords, personal messages, notifications, or any other sensitive personal data through AccessibilityService. This permission is used only to detect app switching during an active focus session and display the Focus Guard blocking screen.