Wake-up calls by time
Pick your time below. Each page shows the same three things: the free option to try first, the bedtime that gets you a full night, and how a real phone call at that time actually works.
An iPhone Clock alarm rings even on silent and through Do Not Disturb — iOS exempts alarms deliberately. If that already wakes you, you don’t need us.
A call arrives over the carrier network, follows your ring settings rather than your notification settings, and has to be answered — not swiped.
No signal, no call (the reminder still arrives as a text). On hard mute it vibrates unless you set Emergency Bypass. It’s a reminder service, not a medical device.
Wake-ups this early almost always have a hard deadline behind them: an airport, a shift start, a workout that gets skipped if you are late. Your body clock is still pushing for sleep at this hour, so one alarm is a thin plan — most people who reliably make it stack two or three different things instead.
This is the ordinary weekday wake-up, which is exactly why it stops working: the alarm becomes so familiar that you can turn it off without ever really waking up. Anything that changes the shape of the interruption — a different sound, a different mechanism, something you have to answer — buys back a few weeks of effectiveness.
An afternoon wake-up is rarely a morning routine. It is usually one of two things: the end of a nap you do not want to turn into a two-hour write-off, or the start of the day for someone who works nights and sleeps while the sun is up. Both need something that survives deep sleep in a bright room.
At this hour a scheduled call is usually less about waking up and more about a hard stop — the end of a long nap before a night shift, or a prompt you cannot afford to scroll past on a busy evening. The mechanism is the same; only the reason changes.
Wake-ups in the middle of the night belong to shift workers, long-haul travellers and anyone whose schedule has come loose from daylight. Sleep pressure is at its highest here, so treat any single alarm as optimistic and give yourself a backstop.
ReminderCall places a real phone call at the time you choose and reads your reminder out loud. Free to download; calls need a subscription — From $2.88/week billed annually ($149.99/yr) · unlimited calls.
Read next: automated wake-up call apps, compared · when you sleep through your alarm · a wake-up call without a hotel · a wake-up call every morning?
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