Is "CRO" a good niche?

Risky — "CRO" is a crowded market. Apps average 3.0⭐ with a Zombie Score of 40/100. There's some user dissatisfaction, but enough decent options exist that you'd need a clear differentiator to break through.

The "CRO" market on the iOS App Store has an estimated 11.8M users across 14 apps in the Utilities category. With 11.8M estimated users, demand is clearly validated — the question is execution, not market size.

Overcrowded doesn't mean impossible — but it means the generic approach won't work. Target a specific underserved sub-audience rather than competing on features. A niche-within-a-niche often beats a head-on fight with established apps.