Proof over promises
Hire Flutter developers who demonstrate a working build
Flutter promises consistent cross-platform UI, but execution quality — widget structure, state management, and performance — still varies a lot between developers.
How the challenge works for this category
Each Flutter developer you invite builds and demos a working widget tree or screen from your brief within 24 hours, giving you a real, running example of their work rather than a description of past projects.
A working Flutter screen or widget flow
A screen-recorded demo of it running
Their approach to state management for the full app