Hourline
Time travel
Drag the dial to any moment
Scrub the dial or tap a day to jump into the future or the past. When clocks change in between, Hourline says so, like “GMT · DST ended” for London, and moves every city with it.
World clock · converter · meeting planner
Every time zone, any moment.
Hourline shows the time in all your cities and gets daylight saving right, every time. Travel forward or back in time, find the hour that works for everyone, and see clock changes before they happen.
Join the closed beta
Android · free · no ads, no tracking
Compare
Find the hour that works
An hour grid shows work, free and sleep hours for every city side by side, and picks the best overlap for your next meeting.
Convert
Convert any time, anywhere
Pick a date and time in one city and see it everywhere, including UTC. Swap cities in one tap. Pick a time that’s skipped when clocks spring forward and Hourline warns you instead of quietly guessing.
Clock changes
Never miss a clock change
See exactly when the next change happens, what time it happens locally, and how the gap between your cities moves afterwards.
Light & dark
Easy on the eyes, day or night
Light and dark themes that follow your phone, a 12- or 24-hour clock, and big, readable type that scales with your font size.
Accurate by design
Hourline ships its own up-to-date time zone rules, so every phone gives the same answer, whatever its software version.
- 2,200+cities and every time zone, searchable offline
- 2026eIANA time zone rules built into the app
- 240real-world conversions checked against timeanddate.com
- 0bytes of your data collected. No account, no ads
Closed beta on Google Play
Help test Hourline
Hourline is in closed testing before it launches on Google Play. Join in three steps. It takes about two minutes.
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Join the tester group
Sign in with the Google account you use in Google Play on your Android phone, then tap Join group.
Join on Google Groups -
Become a tester
Open the testing page with the same account and tap Become a tester.
Open testing page -
Install Hourline
Install it from Google Play like any other app. Updates arrive automatically.
Get it on Google Play
Please keep Hourline installed for at least 14 days. Google needs that before the app can go public. Found a bug or have an idea? Email hello@adevtutorials.in.
Questions
Is Hourline free?
Yes. No ads, no in-app purchases, no account.
Which phones does it run on?
Android phones from Google Play. An iPhone version is planned.
What data do you collect?
None. The app works offline and your cities stay on your phone. Joining the beta goes through Google Groups and Google Play. See the privacy policy.
The testing page says the app isn’t available
Make sure you joined the group with the same Google account you use in Google Play, then reload the page. It can take a few minutes after joining.
How do I leave the beta?
Open the testing page and tap Leave the program, then leave the group from Google Groups.