Flinto

Principle Mirror serves as the direct companion viewer for Principle, a primary competitor to Flinto for Mac, targeting the exact same high-fidelity prototyping workflow.

While primarily an image editor, it overlaps with Flinto's user base by providing the high-end design tools necessary to create assets for prototypes.

Justinmind competes by offering a comprehensive prototyping platform that includes mobile viewing capabilities for enterprise-level design workflows.

It competes for the same creative professional audience by offering a template-driven approach to visual content creation.