A bedtime that runs the same whoever is home

No. Snoozaroo runs on an Android tablet or phone you already have, plugged in across the room. iPad is coming very soon.

Yes. An OK to wake clock (also written okay to wake clock), a sleep trainer clock and a sleep training clock are names for the same idea: a clock that shows a young child when it is still sleep time and when it is OK to get up. Snoozaroo is one as an app: the stars go out one by one, and the sun comes up at the wake time you set. See what an OK to wake clock is, and when to start.

Not in the usual sense. An alarm clock wakes a child up. A sleep clock is for a child who is already awake: it shows them whether it is still sleep time or OK to get up. Snoozaroo can play a short, gentle wake sound when the sun comes up, if you want one.

Yes. The sleep trainer, Pyjama Ted, the stars, naps and the basic sounds are free, and stay free after the 14-day Plus trial. Plus adds every stock pal, remote control for every grown-up, the full sound library, the activities, the morning present, and bedtime routines with lullabies.

Yes. The screen follows the times you saved, so bedtime runs the same whoever is home. The grown-up controls on the screen sit behind the family PIN. With Plus, you can also give a helper or grandparent the carer role so they see the live view and the morning controls on their own phone.

From about two and a half, with most children understanding it by three. Before that, the stars and the pal are still a calm bedtime signal. More on the age a sleep trainer clock works from.

Yes. Naps are part of the free clock, each with its own stars and its own sunrise, and the same clock can mark the end of quiet time once the nap has gone. See a nap clock and quiet time clock.

With Plus, yes. You choose the steps, such as bath, teeth, pyjamas and a book, and their pal does each one with them. Then a lullaby plays as the screen dims. See the bedtime routine app.

Yes. Take the tablet, or use a phone. In a different time zone Snoozaroo asks whether to keep home times or use the new time zone from the next sleep, and nothing changes unless you choose. See a sleep clock for travel.

The screen stays on through the sleep, dimmed, showing the still night scene. The pal, the stars and the grown-up PIN work on the screen itself, even offline. Only a change sent from your phone needs the tablet online, and the app tells you if it did not apply.

Sounds start quiet, under a cap you can lower, and the night scene is dark and still. On Android, Snoozaroo asks once for Do Not Disturb access, then turns its own quiet mode on for each sleep and off at wake. Clock alarms set on the tablet still ring. Snoozaroo does its best here, and cannot promise that no other app will ever make a sound.

You choose Keep Plus or Move to Free; doing nothing means Free and no charge. A sleep that is running finishes as normal, and your settings, your toy shelf and any pal you own stay.