OK thanks, that's what I thought. I was going to try Housecurve with a view to manually entering the PEQ curve but my iPad Air 2 is too old - looks like a new iPad is on the cards if the remote mic isn't usable. I also have a mic from my Denon AVR-X2800H (for Audyssey) but no idea if this could be used in any way?Wiim’s RC doesn’t use HouseCurve so I don’t necessarily see it following that the Wiim Home app will need a similar level of iOS unless there are specific iOS functions both need as a minimum. Still haven’t heard of any progress on the Android front - last I recall was that WiiM we’re going to investigate the use of the WiiM remote mic to help address that.
However with the advent of a 10 band (and two channel) PEQ in the cards, you will be able to use other tools to measure then input the values into the WiiM app.