Drowze

The app provides a set of ambient audio tracks that can be combined into a custom soundscape for sleep, meditation, focus, or tinnitus relief. Users select from 53 pre‑installed sounds across nature, weather, water, urban, mechanical and abstract categories, layer up to eight tracks, and adjust each volume independently. A timer ranging from fifteen minutes to eight hours fades the mix out gradually, and the audio continues to play with the device locked and the screen off.

A night‑light mode offers nineteen adjustable colors and brightness levels, with OLED burn‑in protection, making the iPhone usable as a soft lamp for nighttime activities. The “Sleep Coach” conversational feature asks about the user’s current state, then suggests a mix, breathing exercise, timer setting and night‑light configuration, learning preferences over time. Multi‑phase “Sleep Journeys” let users define sequences of mixes, colors and durations that transition smoothly.

Presets can be saved and synced via iCloud, and the app operates without accounts, ads or tracking. All functionality is bundled into a single, low‑overhead interface aimed at anyone seeking a simple, cost‑free sleep‑aid solution.