The world runs on many clocks. Yours runs on one.
Every city you care about, one glance away. Live home-screen widgets, a time machine for cross-meridian planning, and alarms anchored to a city's clock instead of your local time.
34,804 cities · No account · No ads · No tracking · Works offline
Watch the phone
Type a city. Find it among 34,804 cities. Then give it a name that means something to you: Mom, Sarah, Boss, Dev Team…
Because you don't think in timezones, you think in people. Call a city whatever you want, and that name follows it into every widget.
Daylight saving? Unichrono adjusts automatically, so you don't have to think about it. Just glance, and the time is right.
One glance, and you know.
Two Cities keeps your time and your loved ones' side by side, Availability knows who's awake, the analog owns the desk, Sun Clock maps daylight over your travel destinations — every widget resizable, themeable, and called by your names.
They stay live the cheap way: reading your phone's own clock, nothing running in the background, so they never freeze and never cost you battery.
Your time and theirs, side by side. For the call that crosses an ocean.
Green, amber, red — who you can call right now without waking anyone.
A real dial with a sweeping hand. Line a few up and your desk looks like an airport wall.
Sunrise, sunset and the arc between. How much daylight is left where you're headed.
Every long-distance life runs on one question: is now a good time?
Drag the slider and every city answers at once — who's asleep, who's at lunch, whose Tuesday hasn't even started. Slide to Saturday evening and find the one hour that works for the whole team.
The app goes further — a hundred years in each direction, so you can plan a wedding in 2031 and daylight saving is already handled, even there.
Some things need to happen on their time, not yours.
Set an alarm for 7 a.m. in Tokyo, a calendar event for New York, or have Unichrono announce the time every hour — or once, at a time you choose.
Then there's the city alert: name it “Remind Mom about Medicine,” and when 9:00 PM arrives in Mumbai, Unichrono tells you: “Remind Mom about Medicine. It's 9:00 PM in Mumbai.”
Once, or every day. Pick the city, set the time, give it a name. Unichrono takes care of the rest.
Your phone's own time, said out loud — every hour inside a window you set, or once a day.
You'll glance at these widgets more than almost anything else on your phone, so they should feel like yours.
Show seconds when you need them, hide them when you want calm. Choose 12-hour or 24-hour time. Add flags and city names so a glance tells you everything. Go Dark or Light, then pick any colour to make each widget fit your wallpaper, not fight it.
One setting styles them all. Or let every widget have a personality of its own.
Unichrono began with parents whose children live abroad — check the clock, do the maths, hesitate, decide it's too late to call.
It grew into a planner for anyone whose people are spread across timezones: his morning, her evening, same moment.
You already know who to call. Now you know when.
The same cities, widgets and time-travel ruler on Android, iPhone, iPad and Mac, with your cities on Apple Watch and Wear OS too. There is no account, so nothing syncs behind your back: a watch mirrors the phone it is paired with, and to move your list anywhere else you export it on one device and open it on the other.
Home-screen widgets that never freeze, and a quick-access notification that keeps your cities one swipe away.
Free · Android 8.0+Home Screen and Lock Screen widgets, plus alarms that go off by another city’s clock.
Free · iOS 17+The whole app on the big screen, with extra-large Home Screen widgets.
Free · iPadOS 17+A menu bar clock with no Dock icon, desktop widgets, and city alerts spoken aloud.
Free download · macOS 14+Your iPhone’s cities on your wrist, complications for the watch face, and the Digital Crown to travel through time.
With the iPhone app · watchOS 10+Your phone’s cities on your watch, plus a tile and a watch-face complication that update on the minute.
Free · Wear OS 3+A clock does not need a server.
Unichrono ships all cities and every timezone rule inside the app — so it works in airplane mode, in a basement, and on the day other apps stop working because somebody's server went down.
There is no server. There is no account. Your phone already knows the time; Unichrono just reads it.
Read the full privacy policy
Unichrono is built by one small studio, and the list of what to build next is mostly written by the people using it. The form takes a minute, needs no sign-in, and goes straight to the person who writes the code.
A widget you wish existed, a city that is missing, a setting that should be there. Tell us what you would use it for — that is the part that decides.
Open the formA wrong time, a widget that will not place, an alert that stayed silent. Include your phone model and the app version from Settings — it usually points straight at the cause.
Report itA question, a confusing screen, a word that reads wrong in your language, or simply that it works well. All of it is useful and none of it needs a category.
Tell usEvery city, every widget, every feature. No subscription, no ads, no account, nothing to restore.
Get it onGoogle Play Android 8.0 and newerThe full app, unlocked for keeps. Install it before the year turns, tap the free unlock inside, and it stays yours — no card, no subscription, no expiry.
Download on theApp Store iPhone and iPad · iOS 17 and newerA menu bar clock with desktop widgets and the full planner. Buy Pro once and it also unlocks on your iPhone and iPad. No subscription.
Download on theMac App Store macOS 14 Sonoma and newerNew to it? Start with the user guide
Unichrono