Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
Salted - Learn skills and recipes from expert chefs
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
Cooked Pro - Build your very own recipe community with WordPress.
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
NYT Cooking - iPhone app with 17,000 free recipes from The New York Times