Deep work for freelancers
Your hours are the business.
No boss protects your calendar. No team absorbs your shallow days. When you work for yourself, the deep hours are the product, the marketing, and the margin — and the only person standing guard over them is you. Particle stands there with you.
Free. No account. Runs in your browser.
Where the deep hours go
Clients fragment the week
Three clients means three contexts, and every switch leaves residue. The day fills with honest work that somehow adds up to less than it cost.
The eight-hour myth bills you
Sustained deep work tops out around three to four hours a day — the research is consistent. Pricing and planning as if all eight were equal sells your best hours at your worst rate.
Proving the work is its own job
The hours live in one tool, the invoice in another, the memory of what was hard in neither. At the end of the month you reconstruct your own work like a stranger.
What Particle gives you
Projects that mirror your clients
Organize particles by project — each client’s hours, kept separate and on record. With Flow, project insights show the distribution at a glance: where the time actually went, not where the calendar said it would.
Invoices from your tracked time
Your focused hours become client invoices directly — no re-entering, no reconstruction. Part of Flow.
Vitals: which work feeds you
Rate how sessions felt and Vitals reveals the pattern — the client that energizes you, the project that quietly drains. Knowledge worth more than any hourly rate. Part of Flow.
A planner that respects your ceiling
Daily intentions, focus blocks, and a Day Arc that maps deep work onto your peak hours and admin onto the dip. Built around the three good hours, not the eight imaginary ones.
Questions
Is Particle a time tracker for billing?
It tracks what matters more: focused time. Every session is recorded per project, and with Flow you can turn that tracked time directly into client invoices. It is not a full accounting suite — your tax tool keeps that job.
What does the free tier include?
Free is a complete focus tool — timer, a planner that holds up to 20 open tasks, cloud sync, three soundscapes, unlimited radio, and 30 days of history. Invoicing, Vitals, and unlimited history are part of Flow.
Can I use it across devices?
Yes. Particle syncs across your devices — start a session at the desk, review your week on your phone. Offline-first, so a bad connection never loses an hour.
The work is yours.
The room is ready.
Give the deep hours a home.
Free forever. No credit card.