An extremely powerful environment for vibe coding, allowing you to use web based chatbots (Claude/Gemini via aistudio/ChatGPT, etc) extremely efficiently while staying firmly in their terms of service. A whole lot of apps are provided as samples / templates, including a YouTube playlist app that not only allows a great YouTube experience without ads (also within terms of service!), but "Guitar Hero for piano" that works with a MIDI piano. So much more.