Phone Guardian: Left-Behind
KAZUTO MATSUBARA · Utilities
Independent analytics for this App Store listing. AppTracker is not affiliated with KAZUTO MATSUBARA.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
[Important Bug Fix] Fixed an issue where notifications could occasionally stop working after adding or removing a Safe Zone. [Apple Watch] Notifications can be received by vibration even when the MamoruKun app is not displayed on Apple Watch. You can continue using your favorite watch face as usual.
In-app purchases · US
No in-app purchases.
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About
"Wait — where's my phone?" Let's make that heart-drop moment a thing of the past. Phone Guardian buzzes your Apple Watch the instant the Bluetooth link to your iPhone breaks. Find My helps you locate a phone after it's lost — Phone Guardian tells you the second you leave it, so you can just turn around. ■ Perfect for moments like these - Heading out: know the second you leave your phone at the door - Cafés & restaurants: never leave it on the table when you get up - Travel & trips: avoid leaving it at hotels or airports - Trains & buses: get alerted the moment you leave it on your seat ■ Key features - Instant left-behind alert: your Watch buzzes within seconds - Distance warning: a gentle heads-up before the connection is even lost - False-alarm guard: a brief blip won't trigger it (0–10s grace) - Safe Zones: silence alerts at home or any place you choose - Ring your iPhone: find it loudly from your Watch, even in silent mode - Also a watch face: turn the monitoring screen into a digital or analog clock, with your own photo background, world clock, and corner widgets - Japanese / English: switch anytime inside the app ■ Battery friendly Only low-energy Bluetooth and near-zero-power geofencing. No constant GPS — battery impact is minimal. ■ Privacy No location, no analytics, nothing leaves your device. Everything stays local. ■ Before you start - Requires an iPhone on iOS 17+ paired with an Apple Watch on watchOS 9+ - One-time purchase. No subscription, no ads. - Due to watchOS rules, alerts can be delayed on some models or usage patterns. If that happens, keeping Phone Guardian as your Watch face is the most reliable setup — and it doubles as your everyday clock. Keep your iPhone safe, right there on your wrist.
What's new · 1.2
[Important Bug Fix] Fixed an issue where notifications could occasionally stop working after adding or removing a Safe Zone. [Apple Watch] Notifications can be received by vibration even when the MamoruKun app is not displayed on Apple Watch. You can continue using your favorite watch face as usual.
Details