Naps and nights
One tap starts a sleep, one tap ends it, and baybay works out how long it ran so you never type a duration.
Tap Log sleep when they go down and tap again when they wake. baybay works out how long it ran, so you never type a duration.
Naps and nights are the same two taps
When you start a sleep you say whether it is a nap or the night. Everything after that is identical: a timer runs on the log screen while they are asleep, and ending it records the length.
The distinction exists because the dashboard treats them differently — naps count towards the day's totals, nights drive the bedtime chart — not because they work differently while you are logging them.
The night carries across midnight by itself
Start the night at 7:40pm and end it at 6:10am, and baybay records one sleep of ten and a half hours. You do not split it, and you do not tell it which day it belongs to.
You can log a feed while a sleep is running
The feed and sleep buttons are always both there. A baby who is fed while still dozing, or fed the moment they wake before anyone has touched a phone, is the normal case rather than the exception — so nothing is hidden while a timer runs.
You can also record a sleep that has already finished while a different one is still going. The only thing baybay refuses is two sleeps running at once.
Forgot to end one?
Very common, and it takes one tap plus a correction. Ending a nap you forgot about.
Dream feeds and late entries
Nothing has to be entered when it happens. Put the sleep in afterwards and set the times back. Logging something afterwards.