BettyTime World Clock

Bettytime shows one moment in time across all the places you care about.

Pick a time — or leave it running live — and every zone you have saved moves with it. Useful for booking a call with someone three time zones away, working out whether it is a reasonable hour to ring home, or just knowing what day it already is somewhere else.

WHAT IT DOES

• Set a time once and read it everywhere. Every card shows the same moment, in its own zone.

• Search over 400 time zones by city, country or zone name. "Kolkata", "Germany" and "Eastern Standard Time" all find the right one.

• Rename any zone to whatever you actually call it — "HQ", "Mum", "the Berlin office".

• Cards sort west to east by UTC offset, so the day reads left to right.

• A +1d or −1d marker where a zone has already rolled over into another day.

• 12- or 24-hour, light or dark. Both remembered between launches.

• Your own zone is always there, marked Home. Swap which zone you are working from whenever you like.

WHAT IT DOES NOT DO

No account. No sign-in. No ads. No analytics. No trackers. No network requests of any kind — it works with no connection at all, and there is nothing to leak because nothing is ever sent anywhere. Your zones and preferences are stored on the device and nowhere else.