I read a great interview with David Hockney where he said that every day he uses an ipad to do verious digital artworks which he just emails to friends of his f

I read a great interview with David Hockney where he said that every day he uses an ipad to do verious digital artworks which he just emails to friends of his for free since they cost him nothing and he does them for practise. In his case he had a custom app written for him but he doesn't use a custom input method. You can see some of the ipad paintings here https://www.theguardian.com/artanddesign/2021/may/10/david-hockney-on-joy-longing-and-spring-light-im-teaching-the-french-how-to-paint-normandy https://www.theguardian.com/artanddesign/2021/may/10/david-h... although I can't find the original interview about the process.