On Android, you can set a sound before the timer ends, countdown sounds, and whether to reduce audio from other apps during the alarm.
The before-end sound and countdown sounds work only while ListTimer is open. They do not provide before-end notifications in the background or while the screen is off.
Open the Sound Settings
Open Settings and scroll to "Before Timer Ends".
Play a Sound Once Before the Timer Ends
Tap "Sound Before Timer Ends".
Select "On", choose how many minutes and seconds before the end to play the sound, then tap "OK". You can choose from 1 second to 30 minutes before the end.
Select "OFF" when you do not want to use it.
Play Countdown Sounds
Tap "Count Down Sound", choose an option, then tap "OK".
"OFF": no countdown sounds.
"Always": play a sound every second during the countdown.
"1 Sec Before" to "60 Sec Before": start playing a sound every second when that much time remains.
Reduce Audio from Other Apps
Turn on "Reduce Other Sounds" in Settings to lower the volume of background audio while the alarm plays. Turn it off if you do not want ListTimer to lower that volume.
To change how many times the alarm and notifications repeat after the timer ends, use "Alarm Count".