Add your first big day — we'll count every second, and help you arrive ready instead of just watching a number shrink.
Other countdowns
Tap one to focus on it full-screen
New countdown
Runway
Work-back plan for —
Work expands to fill the time you give it — a few small deadlines before the big one keep that from happening. Parkinson's Law, 1955.
0 of 0 done
No milestones yet. Suggest a work-back plan, or add your own below.
Countdown
Settings
Theme
Comfort
Turns off the digit-tick animation, the zero-day bloom, and the grain texture — everything becomes instant.
Your data — it lives on this device
Nothing is sent anywhere, ever. Back it up so you never lose it.
Fresh start
Deletes every countdown and milestone on this device. Can't be undone — back up first.
About
Horizon · CodeByMobile · v1.0.0
About Horizon
Why runways work
Your privacy
Horizon works entirely on your device. Your countdowns and milestones are stored locally and are never sent anywhere — no accounts, no sign-in, no analytics, no tracking. Back up your data any time from Settings → Your data.
Give back
Horizon is free, forever — every feature, no account, no upsell, no ads. If it helps you, pass it along: share it with a friend, a couple planning a wedding, a classroom, or an event team. Teachers, nonprofits, community groups and event organizers are explicitly welcome to use it at no cost, no permission needed.
How it was made
Built by hand as a fast, offline web app. AI tools helped with wording, layout drafts and artwork; all code was written, reviewed and is owned by CodeByMobile.