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LightBlue vs SerialTest: catalog facts
LightBlue	SerialTest
Free Free to download and use.	Free Free and open source, licensed under the GPL-3.0.
macOS, Android, iOS	Windows, macOS, Linux, Android
Scans, connects to and inspects BLE devices from a phone or Mac Available on iOS, macOS and Android	Serial, Bluetooth SPP, Bluetooth LE, TCP and UDP in one tool Realtime plotter for incoming data
Limited to Bluetooth Low Energy devices No Windows or Linux version	Bluetooth LE support is client only Interface aimed at engineers rather than casual users
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.