Developers waste days identifying and fixing React performance issues like unnecessary re-renders and virtual DOM inefficiencies.
Create a diagnostics toolkit that visualizes component rendering patterns, suggests optimizations, and can automatically apply fixes like memoization.
SaaS pricing for teams plus a pay-per-scan option for freelancers working on client projects.
Start with a Chrome extension that highlights rendering hotspots in existing apps.
The risk is competition from existing React dev tools, so differentiation through actionable recommendations is key.