Classroom Noise Meter – Ruhe
Noise Monitor for Teachers
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Quiet classes earn flames: a friendly noise light for your classroom. Only positive feedback – if it gets too loud, the flames simply go out.
Ruhe turns your iPad or iPhone into a friendly noise light for the classroom. A cheerful mascot shows at a glance how loud the room is – and quiet work gets rewarded instead of noise getting punished.
HOW IT WORKS
• Green: the mascot smiles – nice and quiet.
• Yellow: it gently says “shh” – a little quieter, please.
• Red: it covers its ears – and the flames go out.
COLLECT FLAMES
While the class stays quiet, one flame after another lights up around the mascot. Twelve flames complete the ring – time to celebrate! If it gets too loud, all flames go out. Only positive feedback, no scolding.
MADE FOR LESSONS
• Timer with ring display and start/stop button
• Projector view: show the noise light full screen on a second display while you keep the controls
• Adjustable sensitivity, or automatic calibration in 5 seconds
• Lock the controls with Face ID so nobody in class changes anything
• Light and dark appearance, screen stays on
PRIVATE BY DESIGN
Ruhe only measures the volume. Nothing is recorded, stored or sent. No account, no ads, no tracking.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://crabucate.de/ruhe-privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Felix Leitenberger, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Felix Leitenberger
- Size
- 19.3 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 18 more
- English, Czech, Danish, Dutch, Finnish, French, German, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Ruhe Pro – Yearly $8.99
- Ruhe Pro – Lifetime $22.99
- Ruhe Pro – Monthly $1.99
- Copyright
- © 2026 Felix Leitenberger