Communication Bridge Pro

31 reviews
Content rating
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About this app

App enables communication between different types of communication technologies. Smartphone with this app installed acts as a converter device. It connects to remote devices which cannot communicate directly, and it creates communication bridge between them, enabling them to exchange data. Currently supporting:
- Classic Bluetooth devices : Bluetooth modules (HC-05, HC-06), other smartphone with Bluetooth terminal app, PC or any other device capable of opening Bluetooth port (serial port profile/SPP).(*) App can also create listening port to which remote Bluetooth devices can connect.
- BLE (Bluetooth low energy) / Bluetooth 4.0 devices : devices such as BLE Bluetooth modules(HM-10, MLT-BT05), smart sensors (heart rate monitors, thermostats, etc.)
- USB-serial devices : supported: CP210x, CDC, FTDI, PL2303(*) and CH34x chips
- TCP server : app can create listening TCP server socket to which you can connect up to 3 clients
- TCP client
- UDP socket
- MQTT client

- Bluetooth speakers and headphones
- Variants of listed serial devices with suffix in the name (like PL2303G, PL2303A, etc.) might be also unsupported

App has in build terminal, you can view traffic in a log and send data to connected devices directly from the app interface.

Visit user guide for detailed app description, supported protocols and help with connections.

Found a bug? Missing feature? Just email the developer. Your feedback is greatly appreciated.
Updated on
Oct 31, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity, and Device or other IDs
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

25 reviews
Michael Mohr
November 7, 2023
Works as described. There is a specific set of supported hardware and the program author specifically calls this out in the app description. I have just one issue: the network port is opened to the entire LAN. Please provide an option to bind to localhost instead of the device IP. This is useful to protect devices which are intended for on-device usage only.
1 person found this review helpful
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Marek Masár
November 9, 2023
Good suggestion. I will include this feature in next releases.
Piet Le Roux
March 25, 2021
"I needed it to connect my Meade telescope to the Stellaruim App on my phone. The connection goes from a serial port to a USB converter to the App. Pro BT/USB/TCP does the USB and TCP part excellently!" Not anymore ! in Ver. 3.3 I cannot edit the IP address ? The default is and I keep on losing my connection. I have a Samsung S9 with Android 10 using a USB to serial connection to control a Meade telescope but it keeps on losing connection, if restart the USB device it works
8 people found this review helpful
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Marek Masár
March 31, 2021
You can`t edit IP address of your phone. You can only enter IP address of the remote TCP server to which you want to connect from TCP client. When you creating TCP server, address of your device is used and you can only specify port number.
Charles B
June 18, 2020
Never be happier with a $1.49 purchase on anything, especially the Play store! Thank you for a no BS, straight, clean app that just works! Solved a simple problem that wasn't so simple with no plan B for this particular mobile test rig. I just thought "maybe there's a serial port bridging app for Android?" Low and behold, here it is!
18 people found this review helpful
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What's new

- Performance improvements.
- App can no longer turn ON Bluetooth on Android 13+. User is now prompted to enable Bluetooth when needed.