Talking Gem WAS like the classic Mobile Game "Talking Ben", Except it's Gem...
If the game doesn't pick up your audio, or keeps picking up your background noise, try changing it in the Settings! the slider is the Input Sensitivity, kind of like in Discord, don't forget to Save!
For GameJolt App users, here's a link that should download the Android build: https://gamejolt.com/get/build?game=837544&build=1516469
CLICK ON THE SETTINGS BUTTON, THEN MOVE THE BAR ON THE RIGHT UP A BIT AND CLICK SAVE, IT DOESN'T SAVE (dont know why) , BUT IT CHANGES THE CUTOFF.