StackOS
One-time purchase. Yours forever.
Direct, no marketplace fee. A matching mini-planner is offered at checkout. Also on Etsy.
- Single offline HTML file
- No subscription, no account
- Laptop, iPhone & Android
- Your data stays on your device
Ever start a habit, stick with it for 4 days, then quietly stop? StackOS is the calm habit stacking planner that anchors tiny new habits to things you already do. No subscription, no login, no account needed. Just open the app and stack.
✨ WHAT'S INCLUDED
• Today - today's active stacks with "After I [anchor], I [habit]" pattern and daily completion bar
• Stack Builder - add, edit, remove stacks; tiny-start input; anchor picker from the library
• Streak - per-stack streaks, longest streaks, and a 28-day consistency heatmap per stack
• Anchor Library - 40+ preset anchors grouped by time of day (Morning/Work/Afternoon/Evening/Bedtime)
• Wins Journal - non-completion wins (identity, consistency, compound) with pinning
• Weekly Review - Sunday reflection: best stack, hardest stack, one to remove, one to add
• Settings - name, max active stacks, weekly review day, reminder hour
🔒 100% PRIVATE & OFFLINE
All data stays on your device. No server, no cloud, no account. Works completely offline.
📱 WORKS ON ALL DEVICES
Open on laptop, add to home screen on iPhone (Safari) or Android (Chrome) as an app. One file, all devices.
💾 INSTANT DOWNLOAD
Download once, use forever. No subscription, no renewal, no expiry.
⚡ PERFECT FOR
• Atomic Habits fans who want a working system not just a book
• Anyone tired of Habitica, Streaks, or Productive monthly fees
• People who keep trying new habits and never sticking with any
• BJ Fogg Tiny Habits practitioners who want a digital companion
Questions? Message us on Etsy - we reply within 24 hours.
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