●REM Alarm
REM Alarm is a free alarm clock which wakes you up with a loud alarm when your sleep is shallow.
Using this app will allow you to wake up more comfortably and clearly than ever before.

●Smart Design
REM Alarm is the best alarm clock for you to wake up comfortably.
Simple design and few steps for the settings are the characteristics.
It can be used by anyone for clarity alarm clock.

●How to Use
1, Main setting screen will pop up when you launch the app.
2, After you set the wake up time, press START.
3, The loud alarm will go off when your sleep is shallow from 30 minutes before the wake up time.
4, When you hear the alarm, shake the smartphone to stop. The alarm will stop without launching the app.

※If the wake up time is within the 30 minutes range from now, the alarm will go off at the exact time.

●Sensor Function
REM Alarm measure the depth of your sleep by counting the number of times you turn over, snore, and sleep talk using built-in acceleration sensor and microphone in your smartphone. ※The acquired sound data will not be saved.
The purpose of making the alarm go off when your sleep is shallow is that there will be less burden on your body and you can wake up more naturally than usual.

●What is REM sleep?
Various kinds of mammals’ sleep excluding humans’ can be categorized to REM sleep, Non-REM sleep, etc depending on the condition of the EGG(brain waves).
REM sleep is a sleep state known as “shallow sleep” and its purpose is to retain memories and remove waste products of brain. It is said that humans will feel refreshed when they wake up at this state.

※ The permission for the settings of microphone will be asked when you launch the app for the first time and if you turn it off, there is a possibility that the alarm will not go off. Please be careful.

What’s New

Version 2.2.0

Released English version

App Privacy

The developer, Shin Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Shin Inc.
10.8 MB

Requires iOS 13.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese, Korean, Simplified Chinese, Spanish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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