Most "native vs cross-platform" threads turn into framework fights. For marketplace apps, the framework is the least interesting part of the decision. The questions that actually move your timeline and budget are these: how many platforms you must hit on day one, how far your UI drifts from stock components, which integrations you can't live without, and how users will find the app at all.

This post turns those questions into a checklist you can run before flutter create or npx create-expo-app . It's based on a longer guide on multi-platform mobile app development for marketplaces from the team at Journeyhorizon , a marketplace development agency.

Why "both platforms on day one" is the default for marketplaces

A marketplace has two sides, and you rarely control which phone either side carries. Android holds roughly 70% of global market share, yet iOS matches or leads in many developed markets and among high-value users.…