Doesn’t work at all without ultrasonic module – Echo Meter Touch Bat Detector Review

App looks promising but you can’t even try it out without buying their $200 microphone. I wish they would add a feature to use the built in iPhone microphone instead. It obviously doesn’t have the same frequency range but would allow someone to play around with it before making a large investment.
Review by Wilson476 on Echo Meter Touch Bat Detector.