Windows
Runs alongside your browser, editor or notes.
Windows downloadsUnsigned beta: Windows may show SmartScreen. For this download, choose More info → Run anyway.
A focus timer with a real progression system
Focus, rewarded like a game.
Each session adds a link to your chain, earns XP, and rolls for rare materials — spend them on how your timer, chain and profile look.
Windows + AndroidFree in beta · Works offline · No account needed
Demo20 min in 8 sec
Read one chapter.
Ready
Your chain6 days + today
20 min a day adds a link.
A sample session, ready to start. No account progress is saved.
Build your streak.
Keep your progress.
Focus 20 minutes a day to add a link. Your levels and rewards stay if your streak breaks.
Read one chapter.
Sample · 20 min a day
Permanent progressLevel 2
213 XP earnedNext: level 3
Levels & streaks
Focus earns XP toward levels. Longer sessions and streaks can earn more. Missing a day resets your streak, but keeps your XP, levels and rewards.
Unlock customizations.
Make your timer, chain and profile yours. Earned through focus.
Plus sounds, colors and celebrations.
Try a timer finish
Cast · default timer
How materials work
Every completed 20 minutes earns a strike: a chance to find materials. Completed hours, two-hour blocks and three-hour blocks add extra strikes. More chances; unchanged rarity odds.
18 Copper6 IronChased finish
Save materials across sessions, then spend them on finishes. This recipe takes more than the website demo.
Earn achievements.
Unlock collectibles.
Some focus milestones unlock calling cards to display beside your name.WildfireCollectible calling cardWear it on your profile
Boris5832:18 deep · Build Chain14.3h
- Current chain
- 36 days
- Lifetime focus
- 1,000 hours
Focusing on Build Chain · illustrative session
Sample profile
How to earn Wildfire
Earn Keeper of the Flame: on 20 different days, start a session while warmth from an earlier deep session remains. Days needn’t be consecutive.
Connect with friends.
See who’s focusing. Compare weekly progress.
Friends are optional.
Friends leaderboardSample board
1 friend focusing nowThis week
Boris5832:18 deep · Build Chain14h 20m
- Current chain
- 36 days
- Lifetime focus
- 1,000 hours
Focusing on Build Chain · illustrative session
Sam184h 40m
- Current chain
- 12 days
- Lifetime focus
- 120 hours
You21h 40m
- Current chain
- 7 days
- Lifetime focus
- 2h 20m
Select a friend for details.
Get Chain.
Free in beta · No account needed
Android
Keep Chain open or lock your screen. Switching apps ends the session.
Android downloadsFAQ
What if I miss a day?
Your streak resets. Your XP, levels, hours and rewards stay.
How long should I focus?
20 minutes secures today’s link. Longer sessions earn more progress, with a maximum of one link per day.
What does it cost?
Free during beta — no ads, and nothing to buy inside the app today. Chain will have to pay for itself eventually; whatever you have already earned stays yours.
Do I need an account?
No. Focus offline without an account. Create one for sync and friends; delete it in Settings.
Does it block websites?
No. On Windows, Chain runs alongside your work. On Android, switching apps ends the session; locking your screen is fine.
Where can I use it?
Windows and Android, via direct downloads. There’s also a Play waiting list. Mac and iOS aren’t available.
Why I built Chain.
I've struggled with focus for as long as I can remember. At school, I never did my homework (seriously). Partly because I hated it, sure. But even the things I wanted to do — making videos, reading, building things — were hard to start and harder to finish. Somehow, entire days of games and YouTube required no such effort.
Chain started while I was finishing my bachelor's, with about twenty things I wanted to build and a tiny amount of focused time to divide between them. Plenty of ambition. Very little moving.
I'd read Deep Work and Atomic Habits. Watched every video about dopamine on the internet. Todoist and Notion organized everything I wanted to do. I understood the advice and I had the tools. Sitting down and doing it was the bit I couldn't manage.
So I built Chain around a desperate question: could I make focus as addictive as a game? I wanted that "one more round" feeling, but for something I cared about doing.
Then things got a little ridiculous. I started using Chain to build Chain. The better it got, the more I wanted to focus; the more I focused, the better it got. I'd hooked myself on building the thing that was hooking me.
— Boris, the First Smith
Questions, feedback, or business inquiries? Get in touch.
hello@chainsmith.app