Bike Radar

10 Downloads 20 Views v1.3 7.68 MB 4.1+

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(7.68 MB)

Editor's Overview

Bike Radar is a sports & health application developed by JJ del Rio, packaged as a single Android APK of version 1.3 weighing in at 7.68 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 7.68 MB, so it installs quickly even on modest connections.
This build is signed by "JJ del Rio" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

Bike Radar shows and sounds what your rear bike radar sees, on top of whatever app you are already running.

A thin strip down the edge of the screen shows each approaching vehicle's distance, closing speed and lateral position over your map or navigation app. Tiered beeps rise as the closest vehicle gets nearer, and a distinct urgent tone fires when an impact looks imminent - including while you are rolling slowly toward a junction with a fast vehicle behind. A clear chime sounds when the radar no longer sees vehicles behind.

Everything runs on your phone: no account, no cloud, no analytics. The optional Home Assistant integration publishes ride stats to your own server and nowhere else. Another app on your phone can ask to use your radar, and nothing reaches it until you allow it on a screen naming the app; that handover happens on the device, app to app.

Features:

- Live overlay with per-vehicle distance, closing speed and lateral position
- Tiered proximity beeps, urgent imminent-impact tone, all-clear chime
- Post-ride summary notification: overtakes, close passes, distance, tightest pass
- Front camera/light auto mode by local sunset (one coarse location read per ride)
- Bosch Smart System eBike telemetry, strictly read-only
- Walk-away and forgot-to-lock reminders
- Optional Home Assistant publishing: batteries, close passes, ride summaries
- Sharing with another app on your phone (with your permission): the radar feed, and if you also allow it control of your tail light and hiding the overlay
- Optional on-device capture log for diagnostics, off by default and never uploaded
- English and Spanish

Requires a supported rear radar paired over Bluetooth (pair it once in system Settings) and Android 12 or newer. There is no standard Bluetooth profile for bike radars, so support is per model; the compatibility list on the project's source page says which units work, and the list is short.

A radar that reports distance only is expected to get the approach beeps, the all-clear and an overlay coloured by distance; the per-vehicle speed and side readouts, the urgent tone and close-pass counting need one that also reports closing speed and lateral position. The radar, camera and eBike integrations degrade gracefully: each works without the others.

Bike Radar is a riding aid, not a safety guarantee. It supplements your own attention and mirrors - it never replaces them.

This is an independent open-source project (GPL-3.0-or-later), not affiliated with or endorsed by any radar or eBike manufacturer.

Details

Version	v1.3
Size	7.68 MB
Developer	JJ del Rio
Category	Sports & Health
Package	es.jjrh.bikeradar
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	10

Frequently Asked Questions

Is Bike Radar free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Bike Radar require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Bike Radar safe to install?
We link to the exact APK published by JJ del Rio. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Bike Radar?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install Bike Radar

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded es.jjrh.bikeradar.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Bike Radar» by JJ del Rio and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.