Control & lock screen brightness. Auto adjust by app, schedule, or profile.
Read full description
Take full control of your screen brightness and protect your eyes!
BrightLock helps you lock brightness, automate it with schedules, create app-specific brightness rules, and protect your BrightLock settings with a PIN or biometric lock so no one can disable them without your permission.
✨ Key Features
🔆 Brightness Lock
- Keep your screen brightness exactly where you want it
- Fixed Mode: Lock at a single brightness level
- Range Mode: Allow brightness only within a safe range
- Prevent sudden brightness changes that can strain your eyes
📁 Brightness Profiles
- Create, save, and apply custom profiles (Night, Reading, Gaming, Outdoor, and more)
- Choose fixed or range brightness
- Instantly switch between profiles
- Set your favorite profile as the default
📱 App-Specific Brightness
- Automatically apply custom brightness when selected apps open
- Supports fixed, range, or saved profiles
- Restores your previous brightness when you leave the app
- Perfect for video streaming, reading, gaming, and social media apps
⏰ Schedule Mode
- Automate brightness based on time and day
- Set start and end times with custom schedules
- Apply profiles or custom brightness automatically
- Great for day/night routines
🏠 Quick Access
- 3 beautiful Home Screen Widgets for instant brightness control
- Android Quick Settings Tile to lock or unlock brightness with a single tap
- Access your favorite controls without opening the app
🧠 Smart Brightness System
- Intelligent priority system: App > Schedule > Manual > System
- Smooth brightness transitions
- Prevents conflicts between different features
- Automatically restores system brightness when needed
🔧 Calibration & Control
- Built-in brightness calibration
- Works within your device's brightness limits
- Supports auto-brightness safely
🌍 Supports 11 Languages
BrightLock is localized in up to 11 languages, making it easier to use for people around the world.
🔒 Protect BrightLock
- Prevent others from changing or disabling your BrightLock settings
- Lock the BrightLock app with a secure PIN or biometric authentication
- Ideal for parents who want to keep brightness restrictions enabled for children
🔐 Privacy First
- No account or sign-up required
- No personal data collected
- Everything stays on your device
- Fast, lightweight, and battery friendly
🔍 Accessibility Service Usage
BrightLock uses the Android Accessibility Service only to detect which app is currently visible for the App-Specific Brightness feature.
Why this is needed:
Android does not provide another reliable way to detect the foreground app.
This allows BrightLock to automatically apply and restore your chosen brightness settings.
What the Accessibility Service does:
- Detects the foreground app
- Triggers brightness rules you've configured
What it does NOT do:
❌ Does NOT read screen content
❌ Does NOT record keystrokes
❌ Does NOT collect personal data
❌ Does NOT monitor your activity beyond this purpose
The Accessibility Service is used strictly for this feature, runs entirely on your device, and can be disabled anytime from Android Settings.
👥 Who is BrightLock For?
- Parents who want safe screen brightness for children
- Students and readers who need consistent brightness
- Gamers and media lovers who prefer custom brightness per app
- Night-time users looking to reduce eye strain
- Anyone who wants smarter brightness control and better privacy
💌 Feedback & Support
Have questions, suggestions, or found a bug?
Email: brightlock@ahkproduction.com
For faster support, please include your device model and Android version.
🚀 Why BrightLock?
- Simple & powerful brightness control
- Clean, modern design
- Battery friendly
- Works automatically for all apps and schedules
BrightLock is the easiest way to keep your screen comfortable, safe, and perfect for any situation!