FlutterFlow

FlutterFlow builds native iOS and Android apps by generating actual Flutter and Dart code behind its visual editor, so what you see on the canvas maps to real widgets a Flutter developer would recognize. It connects to Firebase, Supabase, or a custom REST API for data and auth, and supports custom code snippets and packages when the visual layer runs out, which makes it unusually friendly to a hybrid no-code-then-code workflow.

Pricing is tiered by team seats and app count, with a genuinely usable free plan for learning the tool and prototyping before you pay for a published app. The ability to export full source code is the standout feature here, since it means an agency or founder can hand a FlutterFlow project to a developer to extend or maintain without a rebuild, a real exception to the lock-in most of this category accepts. The ceiling is still complex custom native functionality that needs to drop fully into native Swift or Kotlin, where FlutterFlow’s Flutter layer becomes a constraint rather than a shortcut. It fits founders and agencies who want a real, store-ready mobile app fast, with a credible path to developer ownership if the project grows.