"Simple Vibration Alarm" is an alarm application dedicated to vibration. Its no sound. Please use it as an alarm when you are in trouble with sounds such as in trains and libraries!*For customers using Android 10 who experience problems such as the alarm not sounding*We apologize to you for the inconvenience.The problem can be resolved by Uninstalling the app → Restarting the device → Reinstalling the appIf you have tried the steps above several times and this problem is not resolved, please contact us.[Note! ] About some models! ! [Note! ]It seems that some models [mainly HUAWEI] may operate unstable due to the battery optimization function. In that case, [Settings] → [Apps] → [Settings]→ [Special access] → [Ignore optimisations] → [Select "All apps"]→ [Search and tap "Simple Vibration Alarm"] → [Select "Allow"] → [OK]Sorry for the inconvenience, but thank you in advance.[Features]●Simple and as few buttons as possible, so that anyone can use it easily.●The image displayed in the alarm list changes depending on the set time [Morning, Noon, Evening, Night, Midnight], so it is easy to understand the setting time of the alternative alarm.● Notify the time by vibration at the set time●You can synchronize the background with your own wallpaper![How to use]Alarm setting method●Tap "Add alarm" to move to the alarm setting. ●To set the time, tap the "Time setting" button or tap the clock.●Please select "By the day of week" when you want to activate the alarm by the day of week.●Please select "Date" when you want to set the date and time you want to activate the alarm.●Please select "Nap" when you want to nap. Select one of 10 minutes, 20 minutes, 30 minutes, or 1 hour for the nap function.●Please select the region you want to get the weather forecast from the role●When the alarm settings are complete, tap "Completed"●To delete, tap & hold the alarm you want to delete from the alarm list and select "Delete".●You can switch ON/OFF of the alarm on the list.●When you want to stop the vibration, press STOP to stop the vibration.[Note]●Please stop by tapping "STOP" instead of stopping the alarm with task kill!●It may not work properly when used in conjunction with other alarm apps.●If you are using an automatic task kill app, etc., it may not work properly.