Little Relay

Name: Little Relay
Author: UmerCodez

An Android app that bridges Bluetooth Low Energy devices and an MQTT broker in both directions.

By UmerCodez

Free Open sourceAndroid

Official websitegithub.com

F-Droidf-droid.org

Alternatives

BLE ManagerAn Android app for reading and changing Bluetooth Low Energy device characteristics.
HA Bluetooth ProxyAn Android companion app that sends discovered Bluetooth Low Energy device information to a Home Assistant proxy component.
Sensor SpotAn Android app that publishes live device sensor readings to an MQTT broker.
Eclipse MosquittoAn open-source MQTT message broker with command-line clients for publishing and subscribing.

About Little Relay

Little Relay connects BLE devices to an MQTT broker, translating BLE writes and notifications into MQTT messages and sending MQTT data back to BLE devices. It supports Android as a BLE central or peripheral.

The app is free and open source, and its project provides an F-Droid package.

Strengths

Bidirectional BLE and MQTT data flow
Supports both BLE central and peripheral roles
Available through F-Droid

Limitations

Android only
Requires BLE devices and an MQTT broker

Details

Pricing: FreeFree and open source under GPL-3.0-only.
License: GPL-3.0-only
Developer: UmerCodez
Platforms: Android
How it runs: Downloadable app
Best suited for: Android users connecting BLE devices to an MQTT setup
Categories: Automation, Network tools
Last verified: October 8, 2026
Added: October 8, 2026
Provenance: Selected from the F-Droid
Sources: github.com/UmerCodez/LittleRelay

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