PulseRepel

PulseRepel turns your phone into an ultrasonic repeller and a precise frequency generator. A single screen gives you a 0.1 to 24 kHz slider and seven ready-made presets - mosquito, fly, insect, rodent, dog, cat and bird - plus an all-night mode, a panic siren for aggressive dogs and a microphone-based speaker calibration that measures what your device can really emit. PulseRepel works fully offline, keeps no account, and is honest about the limits of ultrasonic repellents.