Stay in the flow of your workout.

FitBoost takes an athlete from a training plan to a completed session—keeping exercises, technique guidance, and progress available when the connection is unreliable.

How FitBoost was built

From idea to a working application—built by one full-stack product builder.

Built end-to-end by a product manager without a traditional engineering background, using AI agents as a development team—with defined roles, an agentic harness, repeatable processes, specialized skills, retained project context, and explicit review checks.

Product direction
Agentic harness
Full-stack builder

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