Question: Can you suggest a tool that allows me to build and host a web app for free?

If you want a tool to build and deploy a web app for free, Bricabrac is worth a look. It uses AI to create web apps from text prompts and offers a no-code editor for customization. You can host the apps for free, and export the code so you're not tied to the service. It's a good choice for building web-based tools and games.

Another option is Replit, a cloud-based service for building, sharing and deploying software as fast as possible. It's got a full-featured environment for building websites and other apps, powerful collaboration tools and AI code generation. Replit offers free hosting with its Starter plan, so it's good for beginners.

Dynaboard is a low-code IDE that lets you collaborate on full-stack web app development. It's got a drag-and-drop builder, code-first UI framework and real-time collaboration. Dynaboard has a free tier, so it's a good option for building and hosting web apps without paying up front.

If you want to tap into the AI-powered text apps, App Mint AI offers a drag-and-drop interface to build web apps with free hosting on secure servers. You can also download the source code for full customization, so it's a good option for building and publishing text-based experiences.