Sleepless nights due to crying babies. Crying fits while out and about. Lost personal time trying to get your child to sleep.

Guzu-guzu is a parent app designed to soothe fussy children simply by showing them a screen.

For those of you who search YouTube for static or white noise videos every night: A zero-ad, offline-working "last resort" in your pocket.

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■ For Parents Like These
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・Having a child who won't fall asleep no matter how many hours you lie down with them.
・Not knowing how to deal with a child who suddenly starts crying, and feeling lost.
・Losing sleep every night due to nighttime crying.
・Feeling cornered by the stares of others when your child cries in the car, on the train, or in a hospital waiting room.
・Requiring you to search for and use static videos on YouTube every time.

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■ 6 Ways guzu-guzu Supports You
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▼ Reclaim Your Bedtime
There's no need to go back and turn off the app after your child falls asleep. It automatically fades out at the set time.

▼ Free Yourself from the Fear of Being "Sick and Stuck" While Out and About
In the car, on the train, in the hospital, in a restaurant. Take it out of your pocket and tap anywhere. It works even in places without a signal.

▼ Freedom from the anxiety of not having something that works
The last resort for nights when nothing else will stop your child from crying. While different sounds and images work for different children, you can try multiple combinations to find your child's "calming switch."

▼ Peace of mind even when giving your child your smartphone
The screen lock function prevents other apps from opening while playback is in progress. No worries about phone calls, being redirected to YouTube, or accidental charges from ad taps. Fingerprint authentication, facial recognition, and PIN codes can be used to block operation.

▼ Built-in safety that parents don't have to worry about
You can set a volume limit, so even if your child turns the volume up to maximum while half-asleep, it will stop at a moderate level. All images feature a low-contrast design with reduced flickering, making them easy on the eyes.

▼ Zero ads, zero data usage
Ads won't wake your child who's about to fall asleep. It works as usual even in places with no signal, such as cars, bullet trains, or your parents' house.

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■ Built-in Sounds (7 types in total)
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・White Noise (Sharp "hiss")
・Pink Noise (Gentle "hiss")
・Brown Noise (Deep, heavy "rumbling")
・Heartbeat (Regular pulsation reminiscent of the womb)
・Rain Sound
・Sound of Footsteps in Snow
・Wind Chimes

You can also add your favorite sound sources (mp3 / m4a / aac / wav / ogg / flac) from your device.

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■ Built-in Backgrounds (7 types in total)
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All are designed with low contrast and low stimulation.

・Sandstorm / Rain / Starry Sky / Snow / Breathing Light / Ripples / Fog

You can also load images and videos from your device as backgrounds (videos play silently in a loop).

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■ In these situations
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▶ In the middle of the night, the moment of yet another bout of crying
Even holding them doesn't work. Just open your smartphone with one hand and tap. The static screen and the "buzzing" sound instantly switch the child's attention.

▶ On the way home from daycare, crying hysterically in the car seat
The instant the traffic light turns red, point your smartphone from the passenger seat towards the back seat. The moment the static screen appears, it becomes quiet in the back.

▶ The moment your child becomes fussy in the hospital waiting room
While being mindful of those around you, tilt your smartphone towards your child in the baby carrier. Thanks to the volume limit, even a quiet volume will reach children.

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■ Frequently Asked Questions
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Q. Is it okay to let my child see my smartphone screen?
A. Only quiet, gentle images such as static and rain are played. It's designed to be low-stimulation with reduced flashing lights. If you're concerned, you can use the sleep timer to automatically turn it off after a certain period.

Q. I'm worried my child might turn the volume up too high while half-asleep.
A. You can set a volume limit. Even if you accidentally turn it up to the maximum, it will stop at a moderate level.

Q. My child might accidentally close the app.
A. You can lock the screen with fingerprint authentication, facial recognition, or a PIN code. Even if you give your smartphone to your child, playback won't stop, and they won't be able to perform other operations.

Q. Does it work offline?
A. Yes. It works even in places with no signal, like inside a car, on a bullet train, or at your parents' house in the countryside.

Q. It's a hassle to go back and stop the app after my child has fallen asleep.
A. It automatically stops at the time set by the sleep timer. The last 3 seconds fade out slowly, so your child won't wake up with sudden silence.

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guzu-guzu's Promise
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• No ads
• No data connection (works offline)
• Low-stimulation images and volume restrictions, prioritizing consideration for children

"When in doubt, use this"—put it on your smartphone.