Daily generation limits reset at midnight in your local time zone — not UTC.
What that means in practice
If your iPhone is set to Pacific time and you open the app at 12:01 AM PT, your daily count is fresh
If you travel to a different time zone, the reset follows your iPhone's current time zone
If it seems off
Your iPhone's time zone may be set to "Automatic" and didn't catch up after travel. Check iPhone Settings → General → Date & Time.
Right around midnight, there can be a small lag — the reset is synchronized within a minute or so, not to the millisecond.
Why local midnight, not a fixed UTC time?
So your daily rhythm makes sense wherever you are. "3 generations per day" means 3 per calendar day in your world — not 3 per arbitrary UTC window that shifts across time zones.
Seeing your remaining count
The current remaining count is visible in the app when you approach the limit (free tier gets a visible counter near the limit).
First 24 hours are different
New accounts get unlimited generations for their first 24 hours, regardless of midnight resets. After that window, the daily counter behaves as described.