Ultramo

Ultramo – Fully Offline High-Frequency Sound Mosquito Repellent Tool Runs entirely offline with no account login or network data transmission, ensuring higher privacy as all operations are processed locally; Three variable-frequency sound modes: Gentle Mode, Standard Mode and Powerful Mode, freely switch according to your needs; Supports audio background playback, continuously emitting sound waves to repel mosquitoes even when your phone screen is locked; Generates high-frequency ultrasonic sound via the device’s built-in speaker; Ultra-simple one-tap start & stop operation, ideal for home, bedroom, camping and other indoor and outdoor scenarios. Disclaimer: This app only produces high-frequency sound waves and does not make any medical efficacy claims regarding mosquito repellent. Actual performance differs depending on device hardware, surroundings and mosquito species.