App Brightness Manager manages address the need for most users and manages the per Application level brightness. You can also get the Pro version to remove ads. If you feel your device is not achieving 100% brightness even when you set it to 100%, please calibrate you devices 100% in the settings to fix it. Some manufactures handle device brightness differently than the default method. What you get with this app: - Preset brightness setting on per app basis - Automatically changes brightness when you open the configured app - When you leave the configured app, device brightness restores to default brightness - Clean and intuitive UI. Permissions: Modify System settings: permission needed by this app to change brightness setting. Usage Access: permission needed to check currently open app for applying brightness setting. Please share your valuable feedback to get better! Thanks!