Hello, I recently retired and starting a new adventure; that being, audio electronics. I have a very basic understanding of electronics. My first project is to build the octopus circuit to use with my oscilloscope for testing ESR. With that said I would like to have a good/decent integrated circuit simulator for iPad Pro. I will be using/learning LTSpice on my iMac, but would like to learn on-the-go with my iPad. Any recommendations will be greatly appreciated. Thanks for letting me be a part of the audiocircle community. Thanks… Jerry