Keep Bright! is a free Android app developed by IceImo-P under the Business & Productivity category. It is a simple app that prevents the screen from turning off automatically while it is running, by residing in the status bar and notification column. This is particularly useful for games or activities that involve looking at the screen for extended periods of time.

Once started, the app immediately displays "TsukePPa!" in the status bar and notification column, indicating that it is preventing the screen from turning off. To exit the app, you can tap on the notification or turn off the screen manually. There are no ads displayed in the app.

It is worth noting that initial setup is required for Android 6.0 or newer devices. The app provides on-screen instructions to guide users through the setup process, which involves turning on a switch in the device settings.

Overall, Keep Bright! is a straightforward and useful app for preventing the screen from turning off automatically, without any intrusive ads.