Ya, but those worked. Wasn't it originally called Disk Doubler (think it might have changed names when MS purchased it).

I remember finding a bug in it that took forever to figure out. You had to install windows 3.1 before enabling it or it would fail to read one of the floppies.

Took me a LONG time to figure that one out....

I have never used Gadget Bridge. But it seems like this wouldn't need a new app, rather just a new profile.

https://gadgetbridge.org/internals/topics/support/