安装包图标

Bike Radar

Overlay and audio alerts for BLE bike radars. Offline, no account, no cloud.
新版本 1.2.0
Home Assistant MQTT topics move from varia/ to bikeradar/, so anything you trigger on a raw topic needs repointing by hand. Your entity ids keep the naming they have, but every entity is registered afresh and some come back with a _2 on the end; anything pointing at an affected id stops working until you delete the stale entity and rename the _2 back. Check your battery sensors, the close-pass event, and, if you have the camera, the front light mode. The rebuilt entities start with no history. I
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.

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
- Optional on-device capture log for diagnostics, off by default and never uploaded
- English and Spanish

Requires a rear radar that speaks the V2 BLE protocol (pair it once in system Settings) and Android 12 or newer. 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.

版本

尽管下面提供了 APK 安装包的下载选项,但你应该注意,以这种方式安装将不会收到更新通知,这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。

下载 F-Droid
  • 版本 1.2.0 (23) 推荐 更新于 2026-08-21

    arm64-v8a armeabi-v7a x86 x86_64

    该版本需要 Android 12 及以上版本。

    此包由原始开发者构建并签名,并保证对应于此源代码 tarball

    权限
    • 只有在前台运行时才能获取大致位置信息
      此应用可以在使用时从定位服务获取你的大致位置。必须打开你的设备的定位服务,应用才能获取位置。
    • 连接到已配对的蓝牙设备
      允许该应用连接到已配对的蓝牙设备
    • 发现附近的蓝牙设备并与其配对
      允许该应用发现附近的蓝牙设备并与其配对
    • 运行前台服务
      允许此应用使用前台服务。
    • 运行“connectedDevice”类型的前台服务
      允许该应用使用“connectedDevice”类型的前台服务
    • 运行“mediaProjection”类型的前台服务
      允许该应用使用“mediaProjection”类型的前台服务
    • android.permission.FOREGROUND_SERVICE_SHORT_SERVICE
    • 拥有完全的网络访问权限
      允许此应用创建网络套接字和使用自定义网络协议。浏览器和其他应用提供了将数据发送到互联网的方法,因此不需要此权限将数据发送到互联网。
    • 显示通知
      允许该应用显示通知
    • 开机启动
      允许此应用在系统完成引导后立即启动。这样可能会延长开机时间,并因始终运行而降低手机总体运行速度。
    • 此应用可显示在其他应用上方
      此应用可显示在其他应用或屏幕其他部分的上方。这会干扰正常的应用使用,并改变其他应用的显示方式。
    • 控制振动
      允许此应用控制振动器。
    • 防止手机休眠
      允许此应用阻止手机进入休眠状态。
    • es.jjrh.bikeradar.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下载 APK 7.6 MiB PGP 签名 | 构建日志