The default answer most people give is wrong
Most articles tell you 'it depends on your audience' and leave it there. That's not helpful. Here's a more useful framework. Build a web app first if: your product is primarily used at a desk or requires heavy input (forms, dashboards, content creation), your early users are professionals, or you need to iterate fast without App Store review delays. Build a mobile app first if: your product is fundamentally location-aware, requires camera or biometric access, or the core interaction is something people will do on the move — booking, scanning, tracking, communicating.
The App Store problem nobody mentions
Every change to an iOS app goes through App Store review. That process takes anywhere from 24 hours to two weeks. For an MVP stage product where you're iterating daily based on user feedback, that delay is brutal. A web app can be updated and deployed in minutes. This is a significant practical reason to start on the web even if your eventual product is mobile-first. Get the product right on the web, then port it to mobile when the core is proven.
React Native changed the equation
Before React Native (and Expo), building for both iOS and Android meant two separate codebases in two different languages. Most early-stage products couldn't justify that cost. React Native means you write one codebase and deploy to both platforms — and with Expo, the tooling is genuinely excellent in 2026. The gap between web and mobile development has never been smaller. If you have a strong mobile use case, it's no longer the barrier it once was.
The honest answer
Unless your product is fundamentally impossible to use without a native mobile feature — camera, push notifications, location in the background, biometrics — start with a web app. It's faster to build, faster to iterate, easier to share with potential users, and you don't need anyone's permission to update it. Once you have paying users and a validated product, building the mobile version is a known quantity. Doing it the other way around is a bet most early products can't afford to lose.
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