CalmBaby is a versatile white noise mixer designed specifically for babies and toddlers, offering 67 unique sounds across 8 categories including water, nature, weather, home, travel, baby, noise, and miscellaneous. Users can mix multiple sounds simultaneously and adjust the volume for each track to create a tailored auditory environment. The app includes six recommended presets aimed at soothing infants, such as Colic Relief and Deep Sleep, along with a sleep timer that features a fade-out option for gradual sound reduction.

In addition to sound mixing, CalmBaby provides a sleep report with a weekly chart to track sleep patterns. The app supports background playback with notification controls, ensuring ease of use during nighttime. Safety features include a volume guard to protect sensitive hearing. With support for 24 languages, CalmBaby is accessible to a wide audience, making it a practical tool for parents seeking to create a calming atmosphere for their children.