AV Sync: Lip Sync Fix & Test

Revoba

In-app purchases

About this app

Lips moving before you hear the words? Audio delay is one of the most irritating problems in a home setup — and most people never measure it, they just nudge a setting and hope.

AV Sync Calibrator measures the actual delay of YOUR setup in about a minute, then tells you what to change.

TWO WAYS TO MEASURE
• Tune by ear — shift the beep until it lines up with an on-screen flash. Direct and precise.
• Reaction test — react to flashes, then to beeps. The difference between your two reaction times is the audio delay, with your own reflexes cancelled out.

THEN FIX IT
The app detects whether you're on TV speakers, HDMI/ARC or Bluetooth, and gives you a guide ordered for your setup: where the lip-sync setting hides on TVs and soundbars, what to do about Bluetooth latency, and how to set an audio offset inside player apps.

FREE TO USE, ONE-TIME UNLOCK
The reaction test and the general setup guide are free, and give you a usable number on their own. A single one-time purchase unlocks the precise tune-by-ear measurement and the guide tailored to your setup. No subscription, no ads, no account.

PRIVACY
Measurements run entirely on the device and are never uploaded. The network is used only for the Google Play purchase check.

HONEST NOTE
This app measures the delay and shows you how to correct it. Android does not let any app change your TV's system audio offset directly — that setting lives in your TV or soundbar menu, and the guide shows you where.

What’s new

Version 1.0.2
- Fixed the home screen opening with nothing selected - the remote did nothing until you pressed a direction key.
- The free version now opens on "Reaction test" instead of the locked card.
- Fixed initial focus on the measuring screens too.
- The reaction test flags a result as unreliable when your presses were slow or inconsistent, and offers to measure again.