It works very good on my iPad.Thanks Alex,
I tried it with my 2015 MBP. It connects but it's very intermittent. The MD-BT01 is pretty much useless as a midi interface in my setup. I wouldn't be able to count on it for any kind of gig use. BTW it has nothing to do with the app I'm using, AxEdit, FracPad, they're all glitchy with the MD-BT01 and a MBP. Does anyone know if it's any better with an iPad?
Btw check its firmware is at least 1.03.
You can update it with Yamaha ud/md utility available in the USA appstore only