Winterlamb 
Commit to 90 consecutive days of movement with the Winter Pass. A run, a gym session, even a ten-minute walk. Choose your movement. Record it each day.
Explore the Winter PassOne Winter. Yours to finish.
The plan was a full session. The day had other ideas. You found room for a walk. That kind of resolve belongs here. A Winter asks you to find a way to keep movement in the day, even when the way changes.
Run. Lift. Walk. Swim. Choose the movement that fits today and record it. Any genuine workout with active time can count toward your Winter.
One pass. One 90-day attempt. A missed day ends the attempt after its sync window closes. Your completed days stay in your record.
How the pass worksA full gym session. An easy walk. A stretch at home. Your week can make room for all of them. Each genuine recorded workout can count toward the same commitment.
Example week. Bar height is active time.
Patient enough to repeat it. Resourceful enough to change how. Stubborn about coming back. A Winterlamb learns to work with the day in front of them, finding a way to move when the original plan falls apart.
Give yourself one Winter. Ninety days to practise keeping going.
Record your movement. See the days you kept going. Follow your confirmed progress through one Winter.
Hold to start on iPhone. Walks, runs, gym sessions, yoga, swims.
Connect recorded workouts from Apple Watch and other apps through Apple Health.
Follow your confirmed days through 7, 30 and 60, all the way to 90.
Your workout history and totals, by week, month, year and all time.
One Winter Pass buys one attempt. Record a genuine workout each day, all the way to day 90.
Walk, run, lift, swim or stretch. A genuine recorded workout with active time counts. No minimum duration, distance, pace or heart rate.
Record on iPhone or bring workouts in through Apple Health. Manually added entries stay in your history but do not count toward a Winter day.
Each day has a 48-hour sync window after it closes. The workout must happen during the day itself.
If the sync window closes without a confirmed workout, your Winter ends. Completed days stay in your record. Another attempt needs a new pass.
No subscription or automatic renewal. The App Store shows the price before you pay.
The outfit. The accessories. Perhaps a content strategy while we’re at it. A short walk still counts. So does the gym session you enjoy. Movement can belong in your day without becoming your whole personality.
fell short of activity recommendations in 2022, up about five percentage points since 2010.
WHO · Global activity levelsRegular physical activity supports heart health, sleep and mental wellbeing.
WHO · Benefits of movementOur commitment gives daily movement a clear beginning and finish. Habit formation varies; there is no universal deadline.
Research · How habits developMore about the evidence in Questions.
Winterlamb is an iPhone app for people working on keeping movement in their lives. Its Winter Pass is a one-time App Store purchase for one attempt at 90 consecutive days, with a genuine recorded workout each day. You choose how you move. Workout tracking is free. Winterlamb is made by Cubeshell LLC.
Ninety days gives the commitment a clear beginning, a sustained period of practice and a finish to work toward.
Research links consistent repetition with habit development, but the time needed varies widely. Ninety days is the length of a Winter, not a guarantee that a habit becomes permanent. The no-miss rule defines the attempt; a missed day does not erase the effort you have already made.
Yes, when it is recorded as a genuine workout with active time. There is no minimum duration, distance, pace, heart rate or calorie target. Ten minutes is an example, not a minimum. Manually added entries can stay in your history but do not count toward a Winter day.
No. Walks and gentle recorded sessions count too. You choose the activity and effort. The Winter Pass asks for a genuine recorded workout each day; it does not prescribe a training plan.
Your attempt ends once that day’s 48-hour sync window closes without a confirmed workout. The days you completed remain in your record. Free tracking continues. Another attempt requires a new Winter Pass.
A workout done during a day has 48 hours after that day closes to sync. This gives the recording time to arrive; it does not give you extra time to do the workout. A day can show as awaiting sync before it is confirmed.
No. A Winter is your 90-day commitment and can begin in any season. Day 1 starts at the next local midnight after the pass is delivered. Your attempt keeps the timezone set at the start for all 90 days.
No. Each pass is a one-time App Store purchase for one 90-day attempt, with no automatic renewal. The App Store shows the price before you pay.
No. You can record on your iPhone. If you have an Apple Watch or use other fitness apps, Winterlamb can read those recorded workouts from Apple Health.
Free workout tracking keeps your history on your iPhone and uses Apple Health for workout records. A Winter Pass requires an account, which holds your pass, attempt and confirmed days. Routes and raw heart-rate samples stay on your device.
WHO reports that regular physical activity supports physical and mental health, including heart health, sleep and mental wellbeing. Its 2024 analysis estimated that 31% of adults worldwide fell short of activity recommendations in 2022.
A 2026 Cochrane review found that exercise may reduce depressive symptoms, with uncertainty about longer-term effects. This is evidence about exercise, not proof that Winterlamb treats depression.
Research also suggests that deliberate commitment structures can help people continue exercising in some settings. Those studies used different arrangements from a Winter Pass. The app is a way to record movement and take on a commitment, not a medical treatment.
Give yourself one Winter. Ninety days of choosing movement.
iPhone · Winter Pass is a one-time purchase