Ruhe App Icon

Ruhe

A friendly noise light for the classroom: quiet work earns flames – noise is never punished.

Coming soon to the App Store

iPad & iPhone·No account·Nothing is recorded

Features

Noise light with a mascot

Green, yellow, red – a cheerful face shows how loud the room is. On yellow it gently says “shh”, on red it covers its ears.

Flames instead of punishment

While it stays quiet, one flame after another lights up. Twelve flames complete the ring, and that gets celebrated. If it gets too loud, the flames go out.

Timer at a glance

The ring around the mascot shows the time left. Start and stop right next to the time; when it ends, measuring pauses.

Projector view

On a projector or second display the noise light appears full screen – the controls stay on your iPad.

Fits every class

Set when yellow and red begin with two sliders – or let Ruhe listen for 5 seconds and calibrate itself.

Lock the controls

Locked with Face ID or passcode, so nobody in class changes anything.

How it works

  1. Set up your iPad

    Open Ruhe and tap the face – measuring starts.

  2. Let them work

    The mascot shows the class how loud it is and collects flames for every quiet stretch.

  3. See the success

    At the end of the lesson, what counts is what went well: the ring of flames.

Help & Support

Ruhe doesn’t measure anything – what now?

Ruhe needs microphone access. Allow it in iOS Settings under Privacy & Security → Microphone → Ruhe.

The light turns red too early or too late.

Tap the slider icon in the toolbar and move the yellow and red thresholds – or use “Set Automatically” while the class works normally.

How do I show Ruhe on a projector?

Connect your iPad to the projector by cable or AirPlay. Ruhe automatically shows the noise light full screen there and keeps the controls on the iPad.

How do I reset the flames?

Tap the flame counter at the top left. You can adjust the flames there or reset them to 0. If Ruhe was in the background for more than 10 minutes, the next lesson starts at 0 anyway.

Is anything recorded?

No. Ruhe only measures the volume – nothing is recorded, stored or sent. Details are in the privacy policy.

Question not answered?

Write to info@crabucate.de – I usually reply within a day or two.

Quiet that feels good.

For iPad and iPhone – coming soon to the App Store.