I develop an open-source self-hosted client (very mobile friendly) for base-station radios that you want to use from anywhere, and also support MQTT/community observers/bots/webhooks/etc. It spawned out of my need for a daily-driver client that wasn't chained to the radio, and turned into a super fully featured companion client for power users.
The radio API and firmware is open; I have no ire for people who choose to make software closed source so that it can be monetized when there are SO many other options that in many cases supersede the functionality of the closed source option.