CauseFlow checks every box. Once.

What it is

One file. That's the whole app.

CauseFlow is a single HTML file. You download it, double-click it, and it opens in the browser you already have — no install, no setup, no permissions. Your tasks save automatically to your computer's local storage and stay there.

It works with the internet off. It works on a plane. It works in ten years, because there's no server that can shut down and take your lists with it.

Create lists, add tasks and subtasks, attach notes, reorder by priority, switch between dark and light mode, and move fast with keyboard shortcuts. Export and import your data whenever you like — it's yours.

The deal

Subscription apps bill you forever. This one you buy once.

One small one-time price is the entire business model — see it at The Shop. No upsells, no premium tier, no "unlock more features." What you buy is what there is.

What you get

Delivered by email the moment you pay.

• CauseFlow.html — the complete app, yours to keep and back up
• QuickStart guide — plain-language setup and tips, no jargon
• Instant delivery — your download link arrives right after checkout

Unzip, double-click CauseFlow.html, start adding tasks. That's the whole setup.

Fair warning

CauseFlow is deliberately small. It's not for you if you need:

• Team collaboration or shared lists — it's single-user by design
• Cloud sync across devices — everything stays local, on purpose
• A phone app — CauseFlow is desktop-only
• Calendars, reminders, or integrations — it manages tasks, period

If those sound like limitations, a subscription app will serve you better. If they sound like the point — welcome home.