Puppy Calmer is a specialized app designed to calm nervous puppies with a soothing noise that mimics the comforting sound of a mother's heartbeat. Originally developed for newborns, it has been rebranded to focus on calming puppies, providing a gentle transition from dependence on background noise. The app offers customizable play durations and a simple interface for ease of use.

Puppy Calmer features specially formulated sounds for small speakers, gradually fading out over 60 days to help puppies adjust to quiet nights. Users can adjust the volume as needed and benefit from a timer function for convenience. Positive user reviews highlight its effectiveness in calming puppies during crate training and providing peace of mind for new puppy owners.