To create an AI app without any cost, you can use Appy Pie's AI App Generator. Simply go to their website, click on Create your app, and describe your app with voice or text commands. Then, click on the Build button and customize the app design. Another option is to use Google Cloud's Gen App Builder, which provides step-by-step orchestration of search and conversational applications with prebuilt workflows for common tasks. Developers can build in minutes or hours using this platform. Additionally, you can try using Builder AI app development platforms, which use technology at various stages of development resulting in rapid development and faster time-to-market for your app. These platforms have prebuilt customizable modules that can be integrated into your app, providing a wide range of modular components for unlimited customizations. Lastly, you can use AI app development tools like FreeAIKit, which allows you to build custom AI tools without the need for API keys or technical expertise. With these platforms, you can create an AI app in under 20 minutes.