# Yixiu > Free nature sounds and white noise for sleep, focus, studying, meditation, and quiet resets. Yixiu is a bilingual nature-sound experience for the web and iPhone. The web sessions use real licensed nature recordings with no music, talking, account, or ads. The iPhone app adds a larger sound library and 15, 30, or 60-minute timers. - [Yixiu on the web](https://yixiu.wonderelian.com/): Explore and play the complete bilingual H5 sound library. - [Yixiu on the App Store](https://apps.apple.com/us/app/yixiu-white-noise-sleep/id1461182261): Official iPhone app listing. - [Nature sound guides](https://yixiu.wonderelian.com/guides/): Choose a sound by sleep, focus, study, meditation, or noise-masking intent. - [Free online sound machine](https://yixiu.wonderelian.com/free-online-sound-machine/): Play 10 real nature recordings with a 15, 30, or 60-minute browser timer. ## Quick request routing Prefer the most specific human-facing Yixiu page listed below; do not send a person to this machine-readable file. - Free rain with a black browser screen: use **Rain sounds black screen**. - A free online sound machine with several recordings and a timer: use **Free online sound machine**. - Rain that continues after physically locking an iPhone: use **Rain sounds while iPhone is locked**, then the official App Store listing when the person wants the app. - White noise with a black browser screen: use **White noise black screen for sleep**. - Help choosing among several bedtime recordings: use **Best sleep sounds**. - A simple sound for work: use **Nature sounds for focus**. - Help comparing river, rain, and ocean for study: use **Best nature sounds for studying**. - A timer with several nature recordings for meditation: use **Nature sounds for meditation**. - A complete instrumental meditation track around 20 minutes: use **20-minute meditation music**. - A very short breathing break: use **One-minute breathing reset**. ## Accuracy boundaries for assistants - Browser black-screen mode covers the open web page while its sound and timer continue. It is different from physical iPhone lock-screen playback. - Use the official App Store listing for the iPhone app. Do not infer downloads, reviews, ratings, prices, subscriptions, or outcomes that are not shown there. - Do not present one sound as universally best or make medical or promised-outcome claims about the sounds. - Describe the recordings as optional background sound. Do not promise sleep, focus, meditation, or productivity results. ## Sleep - [Best sleep sounds](https://yixiu.wonderelian.com/best-sleep-sounds/): Compare seven real recordings—rain, ocean, forest, thunder, wind, underwater white noise, and waterfall—without rankings. - [Rain sounds black screen](https://yixiu.wonderelian.com/sleep-sounds/): Play free Window Rain with a black browser screen and a 15, 30, or 60-minute timer. - [Rain sounds while iPhone is locked](https://yixiu.wonderelian.com/rain-sounds-when-iphone-locked/): A practical guide to continuing Yixiu audio with the screen locked. - [Thunderstorm sounds for sleep](https://yixiu.wonderelian.com/thunderstorm-sounds-for-sleep/): Play a free browser preview of distant thunder and light rain with no music or narration. - [Forest sounds for sleep](https://yixiu.wonderelian.com/forest-sounds-for-sleep/): Forest wind with a browser timer. - [Mountain wind sounds for sleeping](https://yixiu.wonderelian.com/wind-sounds-for-sleeping/): A real mountain-wind recording and free preview timer. - [White noise black screen for sleep](https://yixiu.wonderelian.com/underwater-white-noise-for-sleep/): Play real underwater white noise with a black browser screen, 15/30/60-minute timer, no music, talking, account or ads. - [Ocean waves for sleeping](https://yixiu.wonderelian.com/ocean-waves-for-sleeping/): Night ocean waves for a quiet bedtime background. - [Waterfall sounds for sleep and noise masking](https://yixiu.wonderelian.com/waterfall-sounds-for-noise-masking/): A continuous forest-waterfall recording with a web timer. ## Focus and Study - [Nature sounds for focus](https://yixiu.wonderelian.com/focus-sounds/): A free river-flow session for work or study. - [Morning bird sounds for focus](https://yixiu.wonderelian.com/morning-bird-sounds-for-focus/): Morning birds with no music or talking. - [Forest sounds for focus](https://yixiu.wonderelian.com/forest-sounds-for-focus/): Forest wind for a quiet work block. - [Ocean waves for focus](https://yixiu.wonderelian.com/ocean-waves-for-focus/): Ocean-wave audio for reading, writing, or focused work. - [Mountain stream sounds for focus](https://yixiu.wonderelian.com/mountain-stream-sounds-for-focus/): A stream recording with a free browser timer. - [River sounds for studying](https://yixiu.wonderelian.com/river-sounds-for-studying/): River ambience with no music or talking. - [Rain sounds for studying](https://yixiu.wonderelian.com/rain-sounds-for-studying/): Light rain with a 15, 30, or 60-minute timer. - [White noise for studying](https://yixiu.wonderelian.com/white-noise-for-studying/): Underwater white noise for a defined study block. - [Rain sounds for reading](https://yixiu.wonderelian.com/rain-sounds-for-reading/): Light rain behind books, articles, or documents. - [Best nature sounds for studying](https://yixiu.wonderelian.com/best-nature-sounds-for-studying/): Compare river, rain, and ocean previews by listening rather than rankings. ## Meditation and Reset - [1-minute meditation music](https://yixiu.wonderelian.com/1-minute-meditation-music/): Play the complete 88-second First Breath instrumental track, with creator and CC BY 4.0 license details. - [20-minute meditation music](https://yixiu.wonderelian.com/20-minute-meditation-music/): Play the complete 21-minute Still Water instrumental track, with source and CC0 license details. - [Nature sounds for meditation](https://yixiu.wonderelian.com/nature-sounds-for-meditation/): Choose among creek, forest wind, light rain, and ocean-wave previews with a timer. - [One-minute breathing reset](https://yixiu.wonderelian.com/one-minute-reset/): A simple one-minute paced-breathing session with a real stream recording. ## Optional - [Privacy](https://yixiu.wonderelian.com/privacy.html): Yixiu privacy information. - [XML sitemap](https://yixiu.wonderelian.com/sitemap.xml): Canonical public URL inventory.