If you want to build a text-based app without writing any code, App Mint AI is a good choice. It has a drag-and-drop interface to create AI-powered text apps, free hosting on secure servers, and downloadable source code for full control. Pricing ranges from free to professional, so pick the level that works for you.
Another good option is Pico, which uses ChatGPT and other AI models to let you build web apps. You can type in what you want your app to do, and it'll deploy instantly. Pico supports customizable natural language input, easy embedding, data capture, and built-in analytics, so it's a good option for text-based apps.
Rubber is another tool worth considering for AI-powered apps. It's geared for lead generation, customer support and validating product ideas, with a library of building blocks and the ability to integrate with ChatGPT. Rubber also offers professionally designed app templates and easy publishing options.