Pricing

Track for free, forever. Subscribe to Hydrogen for the AI analysis.

The tracker

Sarenica Desktop

$0forever

Track focus, fatigue, and sessions on Windows. Local-first. No card needed.

Recommended

The AI agent

Hydrogen

$12/ month

The AI agent that explains your patterns. Monthly token quota and wearable sync included.

Free forever

Desktop tracking, local dashboard, and trends never cost anything.

Cancel anytime

Hydrogen Monthly stops at the end of the cycle. Your tracking stays free.

No surprises

One simple subscription. All sales are final — try the free tier first.

FAQ

Common questions

Is the desktop app really free forever?: Yes. Sign up and the Windows tracker, local dashboard, and trend views are free for life. No card required.
What do I pay for then?: Hydrogen — the AI agent that explains your patterns, writes reports, and chats with your data. Subscribe monthly for an included token quota and wearable sync.
Does Hydrogen Monthly renew automatically?: Yes. Hydrogen Monthly renews automatically each cycle. You can cancel anytime and keep your free desktop tracking.
How do I cancel my Hydrogen Monthly subscription?: Sign in and go to Account → Billing, then click "Open billing portal". That opens Paddle’s hosted portal where you can cancel in a couple of clicks. Cancellation takes effect at the end of the current billing period — you keep Hydrogen access until then, and free desktop tracking continues forever.
What happens to my data if I cancel?: Nothing is deleted. Hydrogen features pause at the end of the billing period, but the Windows tracker and your local dashboard keep working for free. Re-subscribing later picks up where you left off — your history stays intact.
Are refunds available?: All sales are final. We recommend trying the free desktop tier and the public Hydrogen demo first, then subscribing once it fits.

Already subscribed? Manage or cancel anytime from Account → Billing. Full details in our Refunds & Cancellation policy.

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