I was able to read the article with some ad blockers and without a subscription, but editing to add an archive link, shared below: https://archive.is/NBivg
This seems like a really cool device from a company called Werewolf. As the article details, they make a little $8 programmable USB-C power adapter, called the VFLEX, that you can get barrel plug adapters for to power older devices that use barrel plugs.
The article discusses some caveats, such as not every USB-C power supply supporting every voltage a device may need. But you can plug the VFLEX into your power adapters (and battery banks) and create a local database of available voltages. Then when you want to power a specific device the app will guide you through which power adapters are compatible with it.
I have no affiliation with the company, but after reading about the VFLEX it seems like a neat option to power some older devices I have.



I know nothing about it, but it really depends on how they implement this.
There might or might not be a well-documented API that would make it easy to code your own app or just send commands to it.
Them providing a mobile app is not a bad thing per se. And maybe a few physical buttons wouldn’t be enough. And physical buttons are expensive (to get right). It sucks, but there it is.
They push updates over WebMIDI, so I wouldn’t hold my breath on a secure API.