Bluetooth Radar
  • 3-day free trial
  • Android 8+
  • Wear OS 2+

Phone left behind?
You'll know at once

Forgot your phone at a café - your watch tells you. Your watch came unclasped - you know instantly. Left your headphones - your phone tells you.

Bluetooth Radar watches the Bluetooth devices you chose. The moment the link is lost, a clear alert fires - on the phone and on the watch. It repeats until you answer it. While the link is up, there are no alerts.

Get it on RuStore Phone APK Watch APK

First 3 days free. Then:

  • 30 days - 49 ₽
  • 90 days - 119 ₽
  • 180 days - 199 ₽
  • 365 days - 339 ₽
  • No ads
  • No internet
  • Data on device
Big alert on the phone: the link to the device is lost
The same alert on the watch: link lost
Link lost

Why it works

Three steps

How it works

After that the app runs on its own - no need to open it.

  1. Pick a device

    Anything already connected over Bluetooth. Sound, vibration and flash can be set separately for each one.

  2. Start watching

    Monitoring continues after a reboot and after the system closes background apps.

  3. Get warned

    Link lost: a loud alert on the phone and on the watch. Link restored: the alert clears itself.

Interface

Screens

Same logic on the phone and the watch: device list, settings and alerts within reach.

Phone

5 screens · swipe →
Main screen: device list, subscription countdown, buttons
Device list and subscription
Add device screen: paired, nearby and manual address entry
Adding a device
Device settings: name, sound, vibration, flash, blink mode, how often to check the link
Device settings
Notifications that the app is running and that the link is lost
Notifications
Permissions screen: what the monitoring has and what still needs allowing
Permissions & background work

Watch

5 screens · swipe →
Watch main screen: monitoring status, adding and device list
Watch main screen
Adding a device on the watch: available now and visible nearby
Adding a device
Device settings on the watch: name, sound, vibration, check interval
Device settings
Notifications on the watch: link loss warning
Notifications
Permissions on the watch: what monitoring is granted
Permissions

If the link is lost

Loud. Persistent. Until you answer

The alert does not get lost among notifications: it sounds, vibrates and repeats until you dismiss it.

  1. Clear alert, at once

    On the phone: sound, vibration and flash; on the watch: sound and vibration. It repeats until answered - tap Got it, open the alert screen, or swipe the notification away.

  2. Wakes even a locked screen

    The red alert opens over the lock screen and turns it on. Answer right away, or unlock and open it with a tap.

  3. Clears itself

    Link restored - the alert is gone. Device removed - its alert is gone too. There are no alerts for devices that never connected.

Subscription

Plans

First 3 days free, no key needed. Then the app asks for a key. A key extends the current period instead of cancelling it.

30 days

49 ₽

≈ 1.63 ₽/day

A month of watching on any device.

90 days

119 ₽

≈ 1.32 ₽/day

Three months. One key instead of three monthly ones.

180 days

199 ₽

≈ 1.11 ₽/day

Half a year. One key instead of six monthly ones.

Best value

365 days

339 ₽

≈ 0.93 ₽/day

A year of watching. The best deal.

Payment

Transfer to T-Bank

Pay by transfer using the QR code or the phone number, send the confirmation - and receive the receipt and the activation code.

QR code to pay for the subscription to T-Bank

T-Bank number for the transfer

+7 981 778-85-35

  1. Pay

    Point the camera at the T-Bank QR code or transfer to the number. Pick the amount from the plans above.

  2. Send the confirmation

    Email a screenshot of the payment confirmation to info@jkweb.ru.

  3. Get the receipt and the code

    The payment receipt and your activation code come back by email.

  4. Enter the code

    Enter it in the app to extend.

Setup

Grant everything - or it cannot work

Every permission below protects one real function. Deny one, and that part stops working without warning.

Bluetooth access

Required

Sees your devices and catches the disconnect the second it happens. Without it there is nothing to watch.

Notifications

Required

Shows the monitoring status and every alert. Without them you never learn about the loss.

Battery exemption

Required

Keeps monitoring alive overnight and through closed background apps. Without it the system stops the watch without warning.

Alert window

Required

Opens the big alert over your open apps. Without it only a small line in the notification panel remains.

Location (Android 8-11)

Android 8-11

Android itself demands it for Bluetooth discovery. Without it no new device can be found.

Autostart (Xiaomi, Huawei…)

Some firmware

Resumes monitoring on its own after reboot and closing. Without it the app does not run until you open it manually.

Install

Download

For the phone - from RuStore or the APK directly. For the watch - a separate APK.

For phone

Android 8+

Version 1.18 · about 5 MB · paid version

Get it on RuStore
or
Download APK

Installed from RuStore? Updates come through the store.

SHA-256:
2D7D6EC20FCD6235A127D9AFFFD7E780A49950DD93EE5C5FABEE9745D25E4C00

How to install the APK

  1. Download the file to the phone or the watch.

  2. Allow installs from this source when the system asks.

  3. Open the file and confirm. The first 3 days run free.

Questions

The short version

How is the RuStore version different from the APK on this site?

RuStore publishes the paid phone version, which is easy to keep updated through the store. The APK here is for manual installation when RuStore is not available.

Does the app need internet?

No. Watching Bluetooth devices and firing alerts works locally, and data stays on the device. Internet is only needed for payment and email.

What happens if I close the app or reboot the phone?

Watching continues if background running, battery exemption and autostart are granted. There is no need to reopen the app.

Why does the app need so many permissions?

Each permission covers a specific function: Bluetooth spots the disconnect, notifications deliver the alerts, and background access keeps it stable. Deny a required one and that part stops working.

How do I renew the subscription?

Pay for a plan and enter the key in the app. A key extends the current period.

Can I watch several devices?

Yes. The app keeps a device list, and sound, vibration and flash are configured separately for each one.

Is there an iPhone and Apple Watch version?

Not yet. The app currently runs on Android 8+ and Wear OS 2+; iPhone and Apple Watch versions are planned.

What counts as a lost link?

A Bluetooth disconnect from the selected device. When the link comes back, the alert clears itself.