Does Roost Alarm work in airplane mode?

Alarms are saved on the phone, so they do not need a network. Use a short test alarm to confirm sound and dismiss behavior on your device.

Is this the Roost smoke alarm?

No. Roost Alarm is a mobile challenge alarm clock app published by Ponuz, LLC. It is not affiliated with Roost smart smoke alarms.

Question

Does any alarm work with Do Not Disturb and silent mode?

Yes. Roost Alarm — the challenge alarm for heavy sleepers by Ponuz, LLC — is built to ring with Do Not Disturb on, the silent switch flipped, and no network. Alarms live on the phone, so they do not depend on a signal. On iPhone (iOS 26+) the sound still works with the app closed; you can still stop that system alarm without finishing the challenge. On Android the challenge always holds.

Roost Alarm behavior when the phone is silenced
Situation	Roost Alarm
Do Not Disturb / Focus	Rings anyway.
Silent switch / mute	Rings anyway.
Offline / no signal	Rings. Alarms are stored on the device.
iOS, app closed	Still rings. You can turn that sound off without the challenge. The challenge always holds on Android.

Why this question exists

A heavy sleeper often leaves the phone on silent or in a Focus schedule overnight. A notification-style alarm can be swallowed. A system-level alarm is supposed to break through, which is why Roost Alarm targets iOS 26+ on iPhone and uses the Android alarm path on Android.

Sound getting through is only half the job. If you can swipe the ringing alarm off in your sleep, DND bypass did not save the morning. That is why Roost Alarm pairs the ring with a challenge and with wake checks.

What to test on your phone

Before you trust any alarm app with a real morning, set a one-off alarm a few minutes ahead, turn on Do Not Disturb, flip silent if you have a switch, and lock the phone. Confirm the sound, then confirm what it takes to stop it.

On iPhone, try stopping the alarm from the lock screen without opening Roost Alarm. You may be able to silence it without the challenge — that is the documented iOS limit, not a hidden bug.

Frequently asked questions

Does Roost Alarm work in airplane mode?: Alarms are saved on the phone, so they do not need a network. Use a short test alarm to confirm sound and dismiss behavior on your device.
Is this the Roost smoke alarm?: No. Roost Alarm is a mobile challenge alarm clock app published by Ponuz, LLC. It is not affiliated with Roost smart smoke alarms.

Get Roost Alarm

Challenge alarm for heavy sleepers. 3-day free trial. $39.99/year or $11.99/month. iOS 26+ and Android.

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