I bought the app Procreate on my ipad a while ago. It’s a digital illustration app. It was cheap and I love it.It is a one off purchase. I have an ipad pro and an apple pencil which really make it easy to work with. I have played around with Procreate for many months and recently purchased a subscription to Skillshare. This is a learning platform and is so awesome for me to learn so many different things, I love it.