Waking up with light,
music and your phone.

One wake-up time, three ways. The light rises gently, the music starts, your iPhone rings as a backup. For Philips Hue and Sonos.

Hellwach is German for wide awake — hell means bright, wach means awake. Which is roughly what a light alarm does. Nothing infernal about it.

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What it looks like

List of saved alarms — All your alarms at a glance, one switch each.

Settings for one alarm — The time you set is when the fade ends, not when it starts.

Welcome screen — On first launch it says what the app does — and what it can’t.

What makes it different

In your devices, not in the cloud

Wake-up times are stored in the Hue Bridge and in your speakers. They go off even when your iPhone is switched off or you are away.

No account, no server

The app talks directly to your devices over Wi-Fi. There is no sign-in, no data collection and nothing that leaves the house.

Gentle or brisk

Ten, twenty or thirty minutes of fade.

Your iPhone as a backup

If you like, your phone rings as well — even when silenced, with Focus on, and on your Apple Watch.

What you need

An iPhone running iOS 26 — also runs on iPad and Mac
A Philips Hue Bridge, second generation or newer (the square model or later), with at least one room set up
Sonos speakers — optional, for waking up to music
All devices on the same Wi-Fi network

Hellwach uses the local interfaces of Philips Hue and Sonos. Neither manufacturer has officially committed to them, and they may change with device updates. This app is not affiliated with Signify or Sonos.

Waking up with light,music and your phone.