Volume Anchor Pro - Sound Lock

Volume Anchor Pro puts your volume back to the level you chose, every time it changes. A child presses the volume buttons, a video app turns itself up, earbuds connect at full blast – the lock notices and restores your level right away.

It doesn't disable the volume keys. It spots the change and sets the volume straight back, so your phone works as before and your level holds only while the lock is on. No accessibility permission is used.

▶ VOLUME LOCK
Pick a level from 0–100%, and whenever the buttons or an app change it, the volume goes right back. Changes are caught three ways – a settings observer, the volume-change broadcast and a check every 60 seconds – so if one misses, another catches it. For each volume type choose Off, Fixed or Range, or tap "Use the current volume".

▶ PAUSE OR TURN OFF IN ONE TAP
The ongoing notification has "Pause for 15 min" and "Off" buttons, and the Quick Settings tile turns the lock on and off. After the pause the lock comes back by itself; "Resume now" restarts it early. Pause and Off are always available.

▶ RANGE LOCK (UPPER & LOWER LIMITS)
Let the volume move freely between, say, 40% and 70%, and bring it back to the nearest edge when it leaves that range – no sudden blasts, no audio too quiet to hear.

▶ SIX VOLUME TYPES
Besides Media (music, video, games), lock Ringtone, Notifications, Alarm, In-call and System sounds, each at its own level. Types your device lacks are hidden. In-call and Alarm never go silent: 0% keeps them at the lowest step.

▶ PROFILES
Save a set of volumes as "Home", "Night", "Car" or any name, and switch with one tap. Three profiles are ready from the start; save your current settings as a new one, or rename, overwrite and delete them.

▶ AUTO SWITCH (APP, TIME OF DAY, OUTPUT)
• By app: apply a profile only while a chosen app is open.
• Time of day: pick days and times – quieter at night, back to normal in the morning. Overnight slots such as 22:00–6:00 work too.
• By output device: switch profiles for the speaker, wired headphones or Bluetooth.
When rules overlap, app comes first, then time of day, then output.

▶ MORE CONTROL
• Bluetooth: some devices push their own volume right after connecting. The lock waits 0.5–5 seconds, then applies your level again, and rests for a few seconds if a device keeps pushing back.
• On vibrate or mute, Ringtone, Notifications and System sounds are left alone.
• Correction history: Home shows the total count; the history lists when, which volume and from what level to what, up to 200 entries.
• A PIN, with optional fingerprint or face unlock, protects your settings. Pause and Off are never locked behind it.
• The lock resumes automatically after a restart or an app update.

GREAT FOR
• Stopping loud videos after a child has played with your phone
• Keeping bedtime music at the same low level
• Making sure the alarm hasn't been turned down
• Avoiding blasts when earbuds or a car system connect

WORTH KNOWING
• While locked, changing the volume yourself snaps it right back. Use Pause or Off to change it.
• It doesn't work on devices without volume steps (fixed-volume devices).
• An ongoing notification keeps the lock running. Please allow notifications.

FREE AND PREMIUM
Media volume lock with auto-correction, Pause and Off from the notification and tile, auto-resume after a restart, and the total correction count are free with no time limit. There are no ads.
Premium unlocks the other volume types, range lock, profiles, auto switch, PIN and biometric protection, and the detailed correction history. Premium is a one-time purchase, not a subscription.

PERMISSIONS
• Notifications: shows that the lock is running and lets you pause it from the notification.
• Usage access: used only for switching by app, to know which app is open.
• Do Not Disturb access: used only if you want volumes restored during Do Not Disturb.