Auralic, which used generation or model IPad works with Auralic app


I have a Auralic G1 and a Aries Femto clock and have been using my I phone but would like to use an iPad. I have an older iPad that is to old to work with the Auralic app. I've never felt the need to buy a new iPad because I use a Mac laptop. I will only use this iPad for streaming. I would like to buy used. Can I buy a used iPad that will work with Auralic app and if so which one or how far back can I go to save money. I called Auralic but they couldn't answer the questions just told me to buy a brand new one. Thanks for any advice.
paulcreed
 Thank you jacks, that's what I was looking for, Auralic for some reason could not the answer that question.
Yes. I’ve got a 6th, 7th and 8th and they all run the current version of Lightning DS. It requires IOS 11 or later and now on IOS 14.
Will a 6 th gen iPad work on Auralic app? My friend has one he would sell me if it would work on auralic app