LockGuard: Volume & Sound Lock

Stop accidental volume changes and unwanted brightness adjustments with LockGuard — the most powerful volume lock and brightness controller for Android.

Whether your media volume keeps changing in your pocket, your ringtone gets turned down by accident, or your screen brightness shifts when you don't want it to — LockGuard gives you full control. Lock any audio stream or display setting to the exact level you choose, and the app instantly enforces it in real time.

🔒 VOLUME LOCK & SOUND CONTROL
Lock individual audio channels independently:
• Media volume lock — keep music, videos, and games at your preferred level
• Ringtone volume lock — never miss an important call or notification
• Notification sound lock — maintain consistent alert levels
• Alarm volume lock — ensure your alarms always wake you up
• Call volume lock — protect in-call audio from accidental changes

💡 BRIGHTNESS LOCK & DISPLAY CONTROL
Lock your screen brightness to a fixed value or a custom range. Prevent automatic brightness adjustments and keep your display at the perfect level for reading, working, or watching content. No more squinting or sudden brightness jumps.

🎛️ FIXED & RANGE LOCK MODES
Choose how you want to protect your settings:
• Fixed mode — pin your volume or brightness to a single level that never changes
• Range mode (Pro) — set a minimum and maximum threshold, allowing control within your chosen boundaries

This is perfect for parents who want to limit the maximum volume for children's safety while still allowing some adjustment. Set a safe listening range and let your kids enjoy content without the risk of hearing damage.

🌙 AUTO-SILENT SCHEDULER (Pro)
Create unlimited auto-silent schedules with custom times and repeat days. Perfect for:
• Silencing your phone during meetings and classes automatically
• Setting overnight quiet hours so notifications don't wake you
• Creating custom DND profiles for work, gym, or study time
• Scheduling different silent modes for each day of the week

No more manually toggling Do Not Disturb — LockGuard handles it on autopilot.

⏱️ TIMED LOCKS WITH AUTO-UNLOCK
Set a lock duration (5 minutes to unlimited) and your settings automatically restore when the timer expires. Great for presentations, bedtime, or focused work sessions where you need temporary volume protection.

⚡ INSTANT ENFORCEMENT
LockGuard monitors your audio and display settings in real time. If any app or accidental button press tries to change your locked levels, the app reverts them back in under a second. Your volume stays exactly where you set it.

🔐 PIN & BIOMETRIC SECURITY (Pro)
Protect your lock settings with a PIN code or fingerprint authentication. This prevents anyone from disabling your volume lock or changing your brightness settings without your permission — ideal for parental control and shared devices.

📲 QUICK SETTINGS TILE
Add a lock/unlock shortcut directly to your Android Quick Settings panel. Toggle your volume lock with one swipe — no need to open the app.

🚫 MINIMAL & AD-FREE EXPERIENCE
LockGuard is lightweight, battery-friendly, and designed to run silently in the background. Pro users enjoy a completely ad-free experience with all features unlocked.

✅ PERFECT FOR:
• Parents who need volume limiter and parental control for kids
• Professionals who need consistent audio during meetings
• Gamers who want stable media volume during gameplay
• Students needing auto-silent mode during lectures
• Night readers who need locked screen brightness
• Anyone tired of pocket dialing and accidental volume changes

Download LockGuard now and take complete control of your device's volume, sound, and brightness settings.