[Zubersoft]

What type of Android device do you have and what Android OS version is it running? I don't have this issue on any of my Android devices, and I'm curious if you are encountering significant latency in starting the metronome. If you tap the settings icon at the top left corner of the metronome, you can enable "Prevent delay when starting metronome". If the issue you are seeing is due to a significant delay when accessing the audio resources, enabling that setting will prevent that. This will use more battery life as the audio will be constantly ready to output sound in the background, but that may be worth it to you. If this is due to a delay in the rendering of the LEDs, that's going to be a more difficult problem to resolve, as while the code tries to ensure the audio is synchronized with the display, it can't account for significant rendering delays.

Mike