No Disturb is a free Android app developed by GlassCUBE Inc. It allows users to mute all incoming notifications to calls, texts, and other intrusions from interrupting during a schedule or when the user turns on the No Disturb mode. This app is similar to the iOS 6.0's "Do Not Disturb" feature. No Disturb can prevent late-night wake-ups from noisy notifications and ensure a good sleep.

The app has several features that include allowing incoming calls or texts from selected contacts, enabling emergency calls, scheduling auto-switching No Disturb mode between day and night, adding exception schedules for going to No Disturb mode within normal mode hours, auto-reply by text of missed calls during No Disturb mode, and an option to receive calls with vibration instead of mute. Additionally, the app supports NFC tag, which can write two commands: toggle No Disturb and toggle schedule mode. The app also has a No Disturb mode toggle widget.

No Disturb is a useful app for those who need a peaceful sleep without any disturbances from notifications. The app is available for free and can be downloaded from the Google Play Store.