Frog sound?

update: its crashing now everytime I open the app. even restarting doesnt do it.

It works, but after the recent update the ads became audio-able and videos too, so I had to purchase it. Which is ok, its a good app. But now there is this weird sound they added that sounds like a frog?! What is that??!

us.heart about Anti Mosquito - Sonic Repeller, v1.9.0