--- title: "White Noise App: No Ads, Works Offline on iPhone" description: "A white noise app with no ads that works without internet. Plays with the screen off, fades out on a sleep timer, and softens into pink or brown noise." url: https://shimmr.app/white-noise-app/ --- White noise app # White noise, without the ads. And without needing a signal. Shimmr plays white noise on your iPhone or iPad with no ads and no internet connection. It keeps going with the screen off, fades out on a sleep timer, and when white feels too bright, pink, brown and other colours are one tap away. - [Download on theApp Store](https://apps.apple.com/app/id6479964631?ppid=b21e78c5-a4df-4b7f-96da-c4e5c36925f3&pt=126988719&ct=en-hero-white-noise-app&mt=8) ## Without the usual catches ### No ads Nothing interrupts the noise. No banners, no video breaks, no sudden loud jingle at two in the morning. ### No internet needed Every sound is built into the app. It works on a plane, in airplane mode or anywhere without Wi-Fi or signal. ### Screen off, other apps on Lock your phone and the noise keeps playing. Turn on Play Audio with Other Apps and it runs alongside a podcast or your notes. ### A sleep timer that fades Set the timer and the noise fades out gently instead of stopping with a click. ## Shape it ### Too bright? Change colour White noise has a hiss that some people find sharp. Pink, brown, green, gray and more are one tap away. ### High Cut and EQ In the mixer, High Cut takes the bright top off any noise, and the EQ lets you shape the rest until it sits right. ### Layer rain or your own music Add rain, ocean or forest ambience under the noise, or bring in your own music with Add Music, each with its own level. ### Save the mix Found the sound you like? Save the mix and it is there tomorrow night, or for your next study session. ## Before you press play ### What the evidence says Research on noise for sleep or study is limited and mixed. Some people sleep or focus better with it, others don’t. Try it for a few nights and judge for yourself. ### Keep it low Set the volume just loud enough to cover the sounds that bother you, and no louder. Leave the phone a little away from your head. ### For study or for sleep Steady noise can mask chatter in a library or traffic outside your window. Use the timer at night, and leave it running while you work. ## The colours of noise White is only one kind of noise. Each colour spreads its energy differently across low and high sounds, so each one feels different. 1. 1 White noise Equal power across all frequencies. A bright, even hiss, like a detuned radio. 2. 2 Pink noise Power falls about 3 dB per octave, so every octave has equal energy. Softer at the top, close to steady rain. 3. 3 Brown noise Power falls about 6 dB per octave, so most of the energy sits low. A deep rumble, like a distant waterfall. 4. 4 Green noise No strict standard. Usually centred on the middle frequencies, and often compared to wind in trees. 5. 5 Gray noise Usually shaped so every pitch sounds about equally loud to human ears. ## Hear the difference Thirty seconds of white noise, then pink, straight from the app. Speakers are fine. Keep the volume low. Turn the noise on. Shimmr is free to download. Pick a colour, set the sleep timer and put the phone down. ## Questions **Is there a white noise app without ads?** Yes. Shimmr has no ads at all, so nothing interrupts the noise while you sleep or study. **Does the white noise app work without internet or Wi-Fi?** Yes. Every sound in Shimmr is built into the app, so it plays offline, in airplane mode or with no signal. **Will it keep playing with the screen off?** Yes. Shimmr keeps playing when your iPhone is locked, and it can play alongside other apps. A sleep timer fades it out when you choose. **Does white noise help you sleep or study?** Some people find it helps by masking sounds that would otherwise disturb them, but research is limited and results are mixed. Keep the volume low and see how it works for you. **What if white noise sounds too harsh?** Try pink or brown noise, which have less energy in the high frequencies and sound softer. In Shimmr you can also turn up High Cut to take the bright edge off any noise. Read more about white noise - [Is it bad to sleep with white noise every night?](https://shimmr.app/learn/sleeping-with-white-noise/) - [Is white noise good for studying? What studies show about focus and memory](https://shimmr.app/learn/white-noise-for-studying/) - [Brown noise vs white noise (and pink and green): which to use](https://shimmr.app/learn/brown-noise-vs-white-noise/) - [The colours of noise explained: white, pink, brown, green and more](https://shimmr.app/learn/colors-of-noise/) - [Pink noise for sleep: what the studies really show and how loud to play it](https://shimmr.app/learn/pink-noise-for-sleep/) Shimmr is not a medical device. Keep the volume low. Never listen while driving.