Built on behavioral science

Quit the habit.
Grow a better one.

You don't quit bad habits — you replace them. Swap turns every good choice into a living tree you can watch grow.

quittinglosing strength growingtaking root
25%
more effective than quitting cold
66
days to a habit that actually sticks
more likely to stick with a buddy
The living tree

Watch one habit wither, and one grow.

Every day you choose the swap, your new habit's tree grows a little greener — and the old one fades. Slip, and it shows. It's not a guilt trip. It's a mirror.

  • One gentle reminder, right before your usual trigger time
  • Honest check-ins — log the slip, no shame attached
  • One missed day is forgiven — streaks that treat you like a human
Day 42 · Smoking → Deep breaths Keep the streak going 42 96% 24 day streak 7-day rate days left Progress to 66 days 64%
Accountability

You're not doing this alone.

Pair up with a friend fighting their own habit. See each other's streaks, cheer wins, and send a nudge on the days it counts — people with a partner are 3× more likely to stick with it.

  • Invite with a simple code — no contacts access needed
  • Cheer when they check in, rescue-ping when they don't
  • Private chat, block and report built in
🧑 🧔 You · 🔥 42 Maya · 🔥 38 checked in today checked in today 👏 Maya cheered you on
Pattern reading

See the pattern. Beat the trigger.

Insights show exactly when you're most likely to slip — which trigger, which time of day — so you can plan for the moment before it happens, not just log it after.

  • Weekly swap-rate and streak trends at a glance
  • Mood tracking on every check-in
  • Milestones and achievements for every ring of growth
Weekly activity Last 8 weeks Swapped Slipped 96% this week ↑

Three steps. Sixty-six days.

The science says a habit takes about 66 days to feel automatic. Swap walks you through every one of them.

1. Plant your swap

Name the habit you're done with — and the specific good habit that replaces it. Same trigger, better response.

2. Check in daily

One honest tap a day — swapped or slipped. A reminder lands right before your usual trigger time.

3. Reach day 66

The point where research says habits lock in. Your tree is fully grown — and so is the new you.

Every good choice, a little greener.

Free to start. One swap, one buddy, one tree — everything you need for your first 66 days.

iPhone only · Premium unlocks unlimited swaps, more buddies, and streak freeze