I'm looking for beta testers for my new app Tinkerstellar, it is similar in concept to Apple’s own Swift Playgrounds, but for Python and computational science. Essentially, it’s a collection of interactive tutorials, where you can edit and run code examples straight away — no need to configure environments, download datasets, or rely on networking connection. I refer to these tutorials as labs, and the app is called Tinkerstellar — because you learn by tinkering with things!