If you're looking for another Nowa alternative, FlutterFlow is worth a look. It offers a visual drag-and-drop interface for building modern apps with Firebase integration, API support and responsive app design. The service also comes with a UI builder with more than 80 Flutter widgets and 170 prebuilt components, making it good for small and large projects. FlutterFlow supports real-time collaboration and offers several pricing plans, including a free option.
Another contender is Bubble, a no-code app builder that lets you create, design and deploy production-ready apps without writing any code. With the help of AI, Bubble offers hundreds of customizable templates and reusable components, a drag-and-drop editor and scalable and secure hosting. Its collaboration tools support up to 40 real-time collaborators and with several pricing plans, including a free development version, Bubble is good for startups and enterprise-scale apps.
Noodl is an open-source, AI-boosted low-code platform that makes it easier to build full-stack custom applications. It offers visual development, reusable modules and real-time data flows. Noodl creates building blocks, database queries and UI elements, so it's accessible to people with varying skill levels. With lots of documentation and a community-supported help system, Noodl is good for prototyping and rapidly scaling web apps.
Last, you could try Backendless, which offers a full set of tools for building high-performance apps as fast as possible. It includes a visual UI builder, codeless logic and direct API integration. Backendless supports responsive apps for web and mobile, real-time databases and multiple deployment options. Its pricing plans range from a free option to customizable paid tiers, so it's adaptable to different project needs.