KKUK / HABIT STAMP

One press today
shapes tomorrow's you

A to-do list erases what you finish. KKUK does the opposite.
Every day you follow through leaves one more stamp behind.

Download on the App Store iPhone only · iOS 18.0 or later
Start small · Keep going
KKUK launch screen — three capsule stamps press in one after another below the brand mark

  • Without opening the app

    Today's board sits on your Lock Screen and in the Dynamic Island. Press a stamp right there.

  • A press, not a tap

    One quick tap won't do it. Hold your finger until the ink fills all the way.

  • Records stay on device

    No account, no sign-in. iCloud sync copies to your own account only when you turn it on.

KKUK / FLOW MAP

Scattered days,
one clear flow

See every stamp you pressed this month on a single board. The timeline retraces when each one landed, in the order it actually happened.

CALENDAR TIMELINE
Calendar tab — a month grid where each day keeps the colors of the stamps pressed that day
Timeline tab — stamps stacked by the hour they were pressed, day by day

KKUK / MEMORY LOG

An ordinary day
becomes worth keeping

Leave a note and a photo beside the stamp. Photos stay on your device, and the app doesn't ask for separate photo library access.

A PHOTO + A LINE YOUR OWN ARCHIVE
Journal tab — notes for each stamp run in date order with photos attached

KKUK / GROWTH SIGNAL

Watch consistency
turn into numbers

See how well you kept up by week, by month, and by year. The period you're looking at can be exported as a CSV file.

WEEK MONTH → YEAR
Report tab, weekly view — a completion flow line and per-stamp completion bars
Report tab, yearly view — the year's completion rate and the longest streak

KKUK / WIDGET WALL

Habits stay visible
outside the app

Today's stamps, recent check-ins, calendar, weekly report, monthly report, group weekly, and a large calendar. Pick any size and keep it on your Home Screen.

SMALL · MEDIUM · LARGE
KKUK widgets on the Home Screen — a yearly grid, today's stamps, and a weekly report side by side
A large calendar widget and a today's stamps widget on the Home Screen

KKUK / ALWAYS WITH YOU

Closest at hand,
so nothing slips by

Open the app once and today's board appears on the Lock Screen and in the Dynamic Island. For a while after that you can press a stamp right there, without going back to the app.

DYNAMIC ISLAND LIVE ACTIVITY
The Dynamic Island expanded over the Home Screen, showing today's progress and a stamp button
Today's board and a stamp button on the Lock Screen

KKUK / PRICING

Start free,
unlock it when you need it

FREE

$0

  • 3 stamps · 3 groups
  • The last 30 days of records
  • This week's and this month's report
  • The Today's Stamps widget

Watch a rewarded ad all the way through to add one more stamp, and the slot you earned stays yours.

KKUK PREMIUM

$1.99 / month · $12.99 / year

  • Unlimited stamps and groups
  • Every record, including anything older than 30 days
  • Past reports and past monthly reviews
  • All seven widgets
  • iCloud sync to continue on another device
  • No ads

Subscriptions renew automatically. Unless canceled at least 24 hours before the current period ends, a subscription renews at the same price, and payment is charged to your Apple Account at confirmation of purchase. You can manage or cancel subscriptions in Settings > Apple Account > Subscriptions on your device.