Ipad as Midi controller Windows

Hi guys and girls,
I have a question, any of you ever used an ipad as a midi controller on windows? I know it is possible on mac, so if you have any idea what is the best app, there are a lot for sale but I dont want to be buying them all as it can be hit and miss.

Yes I do have an actual midi controller, but some times I would like to use my ipad with my laptop when I am traveling and can’t haul my gear with me.

Thanks in advance.