Airtable is a great all-around choice for building databases and apps, with a user-friendly interface and powerful features like app-building, AI integration, and collaboration tools. Spreadsheet.com is another solid option that excels at leveraging AI to simplify spreadsheet work, while Stacker is ideal for teams who need to connect multiple data sources and manage workflows. Podio offers strong team collaboration features, while Google AppSheet provides a quick development process and access to machine learning features. Zapier is a versatile automation tool that integrates with many apps, including the ones mentioned above. Zenkit Base has unique views like hierarchy and mind maps, making it stand out for its data analysis capabilities. Smartsheet is an enterprise-grade project management tool that offers strong reporting tools and optimization for medium and large businesses. Ultimately, the best database app builder depends on your specific needs and preferences, so it's essential to test them out and choose the one that works best for you.