Learning Circuits is a free online app that teaches children and youth about the basics of electricity and circuits, using interactive tutorials and exercises to guide learners through different parts of the 4th grade curriculum. The app features customizable characters, quizzes, and an interactive circuit builder to help learners test their knowledge and practice their skills. Matt Jenner, founder of Learning Circuits, built the app on Bubble, a no-code tool that offered him all the necessary features without requiring coding knowledge. The app has seen strong traffic since its launch, with over 250,000 users since November, and has received positive feedback from learners and parents alike. Jenner plans to continue improving the app, including reducing file size and bandwidth demands, and exploring ways to make it more accessible in different languages. Bubble, the no-code platform used by Matt Jenner, is a powerful tool that allows users to build fully customizable web applications and workflows, with over 500,000 users currently building and launching businesses on the platform.