Treat your habits like experiments. Keep what works. Kill what doesn't.
Serein is a calm, focused system for running small daily experiments. Check in each day, review what's working each week, and double down on the habits that actually move you.
Three steps to better habits
No complicated setup. No overwhelming dashboards. Just a focused cycle.
Create an experiment
Pick a small, concrete action — like "10-minute walk after lunch" — and set a schedule. You're not committing forever; it's just an experiment.
Check in daily
One tap: Done or Didn't. Add a note if you want. It takes under 10 seconds. Rescue plans let you count a smaller version on hard days.
Review weekly
Every week, review your experiments. Keep the ones working, tweak the struggling ones, kill the rest. No guilt — that's the point.
Not another habit tracker
Most apps punish you for missing a day. Serein is designed for real humans.
Habits are experiments, not commitments
You're encouraged to try things and kill what doesn't work. No 365-day streaks guilt-tripping you into continuing something pointless.
Shield passes protect your streak
Had a rough day? Use a shield pass. Your streak stays intact. Because one bad day shouldn't erase weeks of progress.
Rescue plans for hard days
Can't do the full experiment today? Do the 2-minute version instead. Read one page instead of ten. It still counts.
Smart health indicators
Each experiment gets a health status — Thriving, On Track, or At Risk — so you know exactly where to focus your energy.
Everything you need, nothing you don't
Kept up morning walks every day. Reading habit is settling in nicely.
Stretching keeps getting skipped after lunch. Energy is low by then.
Keep Morning Walk · Tweak Stretch → move to morning
Simple, transparent pricing
Start free. Upgrade when you're ready.
Free
Start tracking your experiments
- Up to 5 active experiments
- Daily check-ins
- 1 shield pass / week
- Weekly review
- Last 4 weeks history
Plus
For committed experimenters
- Up to 12 active experiments
- 3 shield passes / week
- Last 12 weeks history
- CSV data export
- 30 bonus points / month
- Mini-games & rewards
Pro
Full power, no limits
- Unlimited experiments
- 5 shield passes / week
- 365 days full history
- CSV + PDF export
- Public sharing & calendar sync
- 80 bonus points / month
- Priority mini-games
Common questions
Ready to start experimenting?
Join Serein for free. Create your first experiment in 30 seconds. No credit card required.