I built a MacOS-native app [1] to control Positive Grid Spark amps [2], without needing a phone.

Official app is mobile-only and clunky, and the workflow is awkward if you're sitting at a desk. Hardest part has been maintaining compatibility across amp models. Small protocol changes or optimizations I make for one amp can break another. That means I have to do a lot of manual testing before every release. So I'm trying to think of an emulation layer or test harness I can build to make my life easier. Happy to hear suggestions there.

About ~50 people are using it so far, and main feedback has been that it's much faster and more reliable than the official app.

[1] https://tonepilot.app [2] https://www.positivegrid.com/products/spark-2