Native iOS vs Flutter vs Web App: How to Choose (and What It Costs) in 2026

Here's what building an app actually costs in 2026, before any sales pitch: a simple app runs $25,000 to $60,000, a medium-complexity app with accounts, payments, and a real backend runs $60,000 to $200,000, and complex products go well past that. Clutch's data across thousands of surveyed projects puts the average full engagement at $90,780 over 11 months. The platform choice moves those numbers a lot: Flutter delivers iOS and Android together for roughly 1.3x the cost of one native app, and a web app often covers the same job for a third of the price of native mobile.

We build all three at DevX Group: native Swift apps like Parlin, Flutter apps, and Next.js web apps. So this isn't a pitch for one path. It's the decision framework we walk clients through, with the 2026 numbers filled in.

The cost table

Ranges below reflect US-market agency pricing from multiple 2026 sources (Topflight, Aalpha, SolGuruz, WebMob). Freelancers and offshore teams come in lower; the trade is management overhead and variance.

Two structural facts explain the spread. Building both platforms natively costs 60 to 80% more than building one, which is the entire case for Flutter when you need both stores. And development is only 50 to 70% of the total: design, QA, and discovery fill out the rest of the invoice.

Timelines

A realistic MVP takes 8 to 16 weeks of build time regardless of stack, and founders underestimate by 2 to 3x on average. Web is fastest (a focused web MVP ships in 4 to 8 weeks), Flutter saves roughly 25 to 35% of calendar time versus building two native apps, and native iOS lands at 6 to 10 weeks for simple apps and 3 to 5 months mid-complexity. Scope creep is the main schedule killer; every "small" added feature is one to two extra weeks.

The costs nobody budgets: maintenance and store fees

Plan on 15 to 25% of the build cost per year in maintenance: OS updates, dependency patches, bug fixes, and the server bill. An $80,000 app costs $12,000 to $20,000 a year to keep healthy. This is the line item that makes one Flutter codebase materially cheaper over five years than two native ones; maintaining a single codebase cuts that recurring cost roughly 40%.

Store fees changed a lot recently:

• Apple: still 30% standard, but the Small Business Program gives 15% under $1M a year in proceeds, which covers most new products. In the US, developers can currently link to external payment with zero Apple commission while the Epic v. Apple proceedings continue. In the EU, the per-install Core Technology Fee was replaced in January 2026 with a 5% commission on digital revenue.
• Google: a new fee structure takes effect June 30, 2026 in the US, UK, and EEA, with 10% on subscriptions and reduced rates on the first $1M.
• Web apps pay none of this. No review queue, no 15 to 30% cut, instant updates. That alone decides the platform question for some business models.

How to actually choose

The honest decision tree we use with clients:

Go web-first when your users arrive through search or links, your product is used on desktop as much as mobile, or you're validating an idea and want the cheapest credible MVP. A web app is also the only path with zero store fees and zero review delays. Know the iOS limits though: web push only works after the user adds your site to their Home Screen, and background processing is restricted, so a notification-driven product will feel second-class.

Go Flutter when you need real apps in both stores on a startup budget. The framework now powers nearly 30% of all new free iOS apps, up from 10% in 2021, so this is no longer the risky choice. You get one codebase, one team, and 90%+ shared code, at the cost of a small performance and polish gap versus native that most users never notice.

Go native iOS when your audience is overwhelmingly iPhone users, when you need the hardware (camera pipelines, ARKit, on-device ML like we use in Parlin), or when the product's feel is the product. Native costs 25 to 40% more than cross-platform for one platform, and you pay it for the last 10% of quality.

The most common path we recommend to first-time founders: web app to validate, then a Flutter or native app once retention proves people want it on their home screen. The brutal context for that advice: average day-30 retention across app categories is about 7%. Shipping an app to the stores before validating demand is how most app budgets die.

If you want a number for your specific idea rather than a range, talk to us. We'll scope it honestly, including the option where you don't need an app at all yet. Past builds across all three stacks are in our portfolio.

FAQ

How much does it cost to build an iOS app in 2026?

Between $15,000 and $40,000 for a simple utility app, $40,000 to $120,000 for a mid-complexity app with accounts, a backend, and payments, and $120,000+ for complex products. Add 15 to 25% of the build cost per year for maintenance.

Is Flutter cheaper than native development?

Yes, when you need both iOS and Android. Flutter typically delivers both platforms for about 1.3x the cost of a single native app, versus 1.6 to 1.8x for two native codebases, and cuts ongoing maintenance roughly 40%. For a single platform, the savings mostly disappear.

How long does it take to build an app MVP?

8 to 16 weeks of build time for a typical mobile MVP, plus design and discovery up front. Web MVPs ship faster, often 4 to 8 weeks. Complex products with AI, real-time features, or compliance requirements run 5 to 9 months.

Can a web app replace a mobile app?

Often, yes, especially for products users reach through search or shared links. You skip store fees and review queues entirely. The exceptions are products that depend on push notifications, background work, or device hardware, where iOS still limits web apps significantly.

What's the cheapest way to get an app built?

A focused web MVP from a small senior team, typically $8,000 to $25,000. Resist the temptation to go cheaper with a large feature list and junior rates: around 70% of software projects blow their budget, and underscoped fixed bids are usually why.