Congrats! Great ratings at App Store, seems promising. Although, you are not exactly on Android already, are you?

We also believe that interactivity is super important

I agree with this premisse and I can't learn through videos. But I am glad with codecademy/freeCodeCamp style (lesson on the left, browse coding on the right). And after the initial steps, following tutorials online to build my own things on a real dev environment.

But I am willing to try another approach that favors interactivity.

We think personalizing content is key

I also agree in theory, but never saw it in practice. I couldn't understand from your landing page how Py solves this either. Would you care to further explain how the content is personalized and what exactly is this game-like?

If you think it's relevant, some context: I am 37 years old, on a career change from marketing to software development. I am learning web development from scratch, studying fulltime since last November. Basically 2 months to complete the first certificate of freeCodeCamp, then, building my own projects following tutorials and documentation. I start next Monday at my first dev job as front end developer. I mostly interested in learning Javascript, maybe dig deeper in CSS and general CS concepts.