One habit.
One at a time.
The free companion app for One Habit at a Time. Redeem the code from your book, and turn each of the 8 habits into a daily practice — with check-ins, AI meal analysis, and no trial clock on Habit One.
Free through Habit One · no credit card needed to start
Not another habit tracker.
The book's own method, in your pocket.
Your current habit, front and center
Cue, routine, reward, and your own trigger sentence — the exact way the book teaches it.
The book's own answers, when you need them
“What you're probably thinking” and hard-situation tips for the habit you're actually on.
Mark it installed, unlock the next
No rush — the book's own benchmark is a median of 66 days, not a deadline.
Everything else you'd expect, none of the noise
Daily check-ins, a photo of your plate for instant AI analysis, and up to 2 friends riding free on your subscription — no social feed, no challenges to manage. Just the habit.
Three steps, from the last page of your book
Download Wingpact
From the App Store above. Sign up with email or Google — same login as any Wingpact user.
Enter your code
The code printed in One Habit at a Time unlocks Book Mode on your account instantly.
Start Habit One
Free for as long as you need it. No trial clock, no card required.
Free habit one. Simple after that.
Once you've marked Habit One installed and move on to Habit Two, keep the rest of the method unlocked — and invite up to 2 friends free.
Yearly
$79
per year
Monthly
$7.90
per month
Questions
Do I have to finish Habit One by a deadline?
No — take as long as the book recommends (median 66 days, range 18–254) before marking it installed.
I'm already a Wingpact user — can I redeem a code?
Yes. From Settings, look for “I have a code from the book” — it adds Book Mode to your existing account, no new signup.
Does it use pounds or kilograms?
Pounds and feet/inches throughout, matching how the book talks about your body.
What about Android?
Coming soon — check back here, or watch for the Google Play link to appear above.