Phone Guardian Downloads & RevenuePhone Guardian: Left-Behind · App Store
Phone Guardian: Left-Behind is #6 in Utilities Paid in Japan and charting in 1 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
25 Sep 2026Phone Guardian: Left-Behind update history & changes
Last change · 10 events since 15 Jul 2026Full timeline ↓Full timeline · 10 events
- 📈Phone Guardian: Left-Behind new best rank in the overall chart: #86Top Paid · All Apps · JP
- ✏️Phone Guardian: Left-Behind: app got bigger1 MB → 2 MB (+30%)
- 📦Phone Guardian: Left-Behind updated to version 1.2.1Version 1.2.1
- Fixed "Ring iPhone" from Apple Watch so the alarm now sounds even when your iPhone is locked or the app is closed.
- Added a watch face complication. Show whether your iPhone is being watched ("Watching", "Left behind!" and more) on any watch face. Touch and hold the watch face > Edit > choose the app's complication.… more - 📈Phone Guardian: Left-Behind new best rank in the overall chart: #93Top Paid · All Apps · JP
- 📈Phone Guardian: Left-Behind entered the top 100Top Paid · All Apps · JP
- 🆕Phone Guardian: Left-Behind first spotted by AppInsider#10 in Top Paid · Utilities · Japan
- 🆕Phone Guardian: Left-Behind: its developer released another app: 広告ブロック-毎日のWEB閲覧を快適に
- 📦Phone Guardian: Left-Behind version 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.… more - 🆕Phone Guardian: Left-Behind: its developer released another app: Ninja Shogi: AI Board Game
- 🆕Phone Guardian: Left-Behind released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Utilities PaidPhone Guardian: Left-Behind at a glance
AI summary written from our chart and store data, 2026-11-08. It can be wrong: check the numbers above.
A paid utility app that alerts Apple Watch users via Bluetooth disconnection when they leave their iPhone behind, targeting travelers and commuters who need immediate loss prevention. The app currently ranks #6 in the Japanese Paid Utilities chart, indicating strong niche traction despite a modest rating of 3.79 from only 14 reviews.
Similar apps: Tile, Find My, Cue
Phone Guardian: Left-Behind on the App Store
App details
Phone Guardian: Left-Behind downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where Phone Guardian: Left-Behind's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | UtilitiesPaid | #6 |
Apps near Phone Guardian: Left-Behind on the chart
Utilities Paid, around #6.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Phone Guardian: Left-Behind
From recent reviews.
About Phone Guardian: Left-Behind
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.
Latest updates
Store changes
What Phone Guardian: Left-Behind changed on its store page: name, icon, screenshots, price, size, languages, requirements.
