Bubble

Bubble is a visual app builder that lets you create responsive web applications without touching code. It comes with a built-in database engine, so you don't need to manage external databases or backends. The visual workflow editor handles complex logic, API integrations, and dynamic page rendering, letting you build everything from user authentication to payment processing.

Bubble suits teams building mobile-friendly web apps quickly, from MVPs to production applications. It's more powerful than Softr or Webflow for complex business logic, but steeper to learn and can hit performance limits at high scale compared to traditional web frameworks.