Sooner or later every founder runs into this one: should we build a mobile app or a web app first?
The answer isn't "both," at least not at the start. Splitting a limited budget across two platforms usually means doing each of them badly. Pick one and do it properly.
Which one? That depends on the product. The criteria below should make the call clearer.
When web is the right call
Content-driven products belong on the web. Blogs, online stores, SaaS dashboards, directories: people find these by searching Google and use them right there in the browser. If SEO is going to be your main growth engine, web isn't optional.
Anything with long working sessions leans web too. Data entry, project management, writing and editing: all of it is painful on a phone. When users need a keyboard and a big screen, give them one.
Web also wins when you need to validate fast. Updates go live instantly with no store review to wait on, and A/B testing is straightforward, which makes it the quicker route for most MVPs.
And B2B tends to be a web story. Enterprise users mostly work from desktops, so CRMs, analytics, and admin panels make more sense in a browser.
When mobile is the right call
Mobile becomes necessary the moment you lean on device features. Camera, GPS, accelerometer, Bluetooth, push notifications: if your product depends on these, a browser won't cut it. Şarj Asistanı uses location constantly, and that simply doesn't work as well on the web.
It also fits products people open in quick bursts, several times a day for a minute or two. Messaging, task tracking, navigation. When one tap from the home screen is the whole point, you want to be on the home screen.
Offline use is another one. When the connection comes and goes, a mobile app can hold data locally in a way the web only half manages.
And sometimes it's just habit. If your audience already lives on their phones and looks for things like yours in the app store, launching on web can put you in the wrong place.
Decision matrix
| Criteria | Web | Mobile | Notes |
|---|---|---|---|
| SEO/organic growth matters | ✅ | ❌ | Web is indexable, mobile isn't |
| Device sensor access | ❌ | ✅ | Camera, GPS, Bluetooth |
| Frequent push notifications | △ | ✅ | Web push exists but limited |
| B2B / desktop usage | ✅ | ❌ | Enterprise = desktop |
| Short, frequent sessions | ❌ | ✅ | Home screen access |
| Fast MVP / iteration | ✅ | △ | Store approval causes delays |
| Payments/subscriptions | △ | ✅ | App Store/Play Store infrastructure |
| Offline usage | ❌ | ✅ | Local data storage |
What about a PWA?
Progressive Web Apps promise a web app that feels native: add it to your home screen, get push notifications, work offline.
In practice it's rockier than that. iOS support is still thin, and push notifications showed up late and remain buggy. PWAs don't appear in the app stores, so discovery is a real problem. They can't quite match native performance. And plenty of users don't even know what a PWA is; they just wonder why the thing isn't in the store.
Where they do make sense is internal tools, employee portals, and anything that doesn't need to be in a store at all.
One first, then the other
The sanest way to do both is one at a time.
The first path is web first, mobile later. You start with a web MVP, grow it through SEO and organic reach, confirm you've actually got product-market fit, and then build the mobile app once demand clearly justifies it. That order suits SaaS, content platforms, and B2B products.
The second path is mobile first, web later. You ship to both platforms at once with React Native, grow through app store optimization and social media, put up a web landing page to support it, and add real web-app features down the line if you end up needing them. That order suits consumer apps, location-based services, and social apps.
Cost comparison
| Web App | Mobile App | Both | |
|---|---|---|---|
| MVP timeline | 3-6 weeks | 4-8 weeks | 8-14 weeks |
| Initial cost | Low-medium | Medium | High |
| Annual maintenance | Low | Medium (store compliance) | High |
| Update speed | Instant | Store approval (1-3 days) | Mixed |
| Distribution cost | Hosting | $99/year Apple + hosting | Both |
How we approach it
At AppDuce we build our own products, and the pattern is pretty consistent. We start mobile-first with React Native, mostly because what we build leans on device features like location or the camera. Şarj Asistanı and ShortsByAuto both started on mobile for exactly that reason.
When the product is a different shape, the answer moves. Something that's really a B2B SaaS tool points toward web; a consumer app that lives in someone's pocket points toward mobile. Whatever the case, the useful exercise is the same: force yourself to answer "why this platform" out loud before you commit.
The honest answer
The honest answer to "mobile or web" is that it depends on your product, your users, and how you plan to make money. There's no magic formula. But run yourself honestly through the criteria above and the right call usually gets obvious.
We've had to make this call ourselves more than once, on our own products, and we build in the open, so you can follow along and watch how it actually plays out.