One app or two? iOS, Android, or both.

Strategy · 6 min read

This is one of the first questions people ask when they start thinking seriously about building an app. Should I build for iPhone? Android? Both? And what's the difference in cost and effort?

The answer depends on three things: where your users are, what your budget looks like, and how quickly you want to get to market. Let me break it down.

Where are your users?

In Australia, iPhone dominates. According to StatCounter's data, iOS holds around 55% of the mobile market here, with Android at roughly 44%. That's nearly the reverse of global trends, where Android leads at about 71%. But Android still represents a massive chunk of the Australian market. Nearly half the country is using it. So if you only build for one platform, you're leaving a lot of people out.

That said, market share isn't the full picture. It depends on who you're building for. Business professionals and corporate users tend to skew heavily toward iPhone. Younger users and budget-conscious markets lean more toward Android. If you're targeting tradies, construction workers, or field staff, Android is huge in those segments.

The point is, don't guess. Do the homework. Talk to the people who'll actually use your app and find out what's in their pocket. That one conversation can save you a lot of money by telling you exactly where to focus first.

Native vs cross-platform, the simple version

There are two ways to build an app that works on both platforms. You can go native, or you can go cross-platform.

Native means building two completely separate apps. One for iOS, one for Android. Different codebases, different development teams in some cases, different timelines. The benefit is that each app is built specifically for its platform, so the performance and feel are as good as they can possibly be.

Cross-platform means building one codebase that runs on both iOS and Android. Frameworks like React Native and Flutter make this possible. They allow 70 to 90 percent code reuse between platforms, and industry estimates put the cost savings at 30 to 40 percent compared to building two separate native apps. You're not getting two separate apps. You're getting one app that works on both platforms. The trade-off is a very slight difference in performance compared to native, but for most apps, especially at the MVP stage, you'd never notice it.

For most first-time app builders, cross-platform is the smart move. You get to both platforms without doubling your development cost. You can always go native later if the app takes off and you need that extra level of performance. But at launch, cross-platform gets you to market faster and for less money.

The design side is easier than you think

Here's something that surprises a lot of people. When I design your app, I design it to work on both platforms from the start. iOS and Android have different design conventions. iOS uses a bottom tab bar for navigation. Android has traditionally used a top navigation drawer, though the two platforms have been converging in recent years.

A good designer handles these differences so your app feels right on each platform. That doesn't mean designing two completely separate apps. The layout, the flow, the overall structure, those are largely shared. The platform-specific tweaks are relatively small adjustments that make the experience feel native on each device.

The design cost difference between "iOS only" and "iOS and Android" is much smaller than the development cost difference. Most of the design work is shared. You can see what's included in the design process for a clearer picture of how this works.

Start with one if you need to

If budget is tight, pick the platform where most of your users are and launch there first. Learn from it. Watch how people use it. Collect feedback. Improve it. Then expand to the other platform once you've proven the concept works.

This is exactly what an MVP mindset looks like. You're not cutting corners. You're being strategic. You're focusing your limited resources on the place where they'll have the most impact, and you're giving yourself the chance to learn before you invest more.

I've seen people try to launch on both platforms simultaneously with a tight budget, and the result is two mediocre apps instead of one good one. Better to do one platform really well than to spread yourself thin across both.

What about web apps?

There's a third option that's worth mentioning. A web app runs in the browser. No App Store, no Google Play, no download. Your users just visit a URL and start using it.

Web apps are cheaper to build and easier to update. For some products, especially internal tools, B2B platforms, or anything where your users are primarily on a desktop, a web app might be all you need. You skip the app store approval process entirely, and updates go live the moment you deploy them.

But web apps have real limitations. If you need push notifications, offline access, camera integration, GPS tracking, or the credibility and discoverability that comes with being in the App Store, a web app won't cut it. For consumer-facing products where you want people to have your app on their home screen, you need a native or cross-platform app.

The right choice depends on what your app actually needs to do and how your users will interact with it. This is something we work through together early in the design process so you're not spending money on the wrong approach.

The cost difference

Building for one platform versus two affects both design and development costs, but not equally.

On the design side, the difference is relatively small. The core work, research, user flows, wireframes, visual design, prototyping, is mostly shared between platforms. The platform-specific adjustments add some time but not a lot.

Development is where the cost really changes. If you go native for both platforms, you're essentially paying for two separate builds. That can nearly double your development budget. Cross-platform closes that gap significantly because you're maintaining one codebase, not two.

This is one of the biggest reasons I recommend cross-platform for most MVPs. The cost saving is substantial, and the trade-offs are minimal for a first version. You can always migrate to native later if you hit performance ceilings or need deep platform-specific features. Most apps never reach that point.

The short answer

For most first-time app builders in Australia, here's the path I'd recommend. Design for both platforms. Develop cross-platform for your MVP. Launch. Learn from real users. Then optimise and expand from there.

That's the fastest, most cost-effective way to get to market without leaving half your potential users behind. You're not overcommitting. You're not underthinking it. You're making a smart, informed decision based on where your users are and what your budget allows.

If you're not sure which platform your audience is on, or whether cross-platform is the right fit for what you're building, that's exactly the kind of thing we figure out together in the first conversation. No commitment, no pressure. Just a clear answer so you can move forward with confidence.

Sources
Mobile Operating System Market Share Australia (StatCounter) - Live data on the iOS and Android split in Australia. At time of writing, roughly 55% iOS and 44% Android.

Related blog posts:

What is an MVP and why should your first app be one? →

The real cost of designing and building an app →