置き忘れ防止に大活躍
職場でもトイレなどで席を離れた際に置き忘れを知らせてくれるので安心です。
Apple Watchユーザーにはおすすめのアプリです。

This app monitors the Bluetooth connection between your Apple Watch and iPhone. It alerts you with a vibration and notification on your watch if the devices become too far apart, helping prevent you from leaving your phone behind.
1.5
August 8, 2026
• The guard now also pauses while your iPhone is charging — walking away from a phone you deliberately left on its charger no longer raises an alarm. • Added quiet hours: set the times when no alert is wanted, and choose which weekdays they apply to (weeknights only, for example). • Added a manual pause from the Apple Watch — 30 minutes, 1 hour or 3 hours. • Whenever the guard is paused, the Watch now names the reason, so "why didn't it alert" is answered at a glance. • Added a silent find: make the iPhone vibrate instead of ring, for meetings and libraries. • Still no location, and no additional permissions.
MoreNo, Omamori is ad-free. It offers a one-time purchase for full access to all features after a 7-day free trial.
Omamori monitors the Bluetooth link between your Apple Watch and iPhone. If the connection drops for a set duration, your watch vibrates and notifies you, alerting you to a potentially left-behind device.
Yes, Omamori allows you to adjust the grace period before an alarm sounds, helping to prevent false alarms. You can also choose to 'keep guarding' or 'stop' the alarm directly from your watch.
Omamori requires an Apple Watch paired with an iPhone and Bluetooth. It is designed to work with both your watch and your iPhone.
Omamori is rated for ages 4+ and prioritizes user privacy. It does not require an account, sign-up, or use your location, keeping your data on your device.
The latest version of Omamori is 1.5, last updated on August 8, 2026. Updates aim to improve functionality and reliability.
Yes, Omamori can make your iPhone sound from your Watch to help you find it, even if it is on silent or locked.
Omamori offers a 7-day free trial period where you can try all features before making a one-time purchase. There are no monthly or yearly fees.