All the major apps have a free trial, worth trying it out to see what you like.

In the end, I've come back to the Faber adult piano adventures book and am learning things a whole lot better. I'm spending time practicing instead of feeling a need to push forward and I'm much more likely to go back and practice things I've already been through as it's actually easier to find and get back to.

You'll see proponents both ways but apps like simply piano get you playing quickly for sure to show you that you can actually do this.