“How much does it cost to build an app” is one of the most common questions a mobile development project starts with, and it rarely has a single honest answer. A simple booking app and a full-featured marketplace with payments, messaging and real-time tracking are both “an app,” but they’re not remotely the same project. This guide breaks down what actually drives the cost, so you can budget sensibly before you ask anyone for a number.
Why there’s no single price
App development cost is driven by scope, not by the word “app” itself. Two founders can describe their idea in one sentence and end up with wildly different budgets, because the real cost lives in the details: how many screens, how much custom logic, which platforms, what happens on the backend, and how polished the design needs to be.
The main cost drivers
Platforms: native, cross-platform, or one platform first
Building natively for both iOS and Android roughly doubles the development work compared to one platform, since each has its own codebase. A cross-platform framework can share more code between the two, often at some cost to performance and access to platform-specific features. Many businesses start on the single platform their users are actually on, and add the second once the first is validated.
Complexity and feature count
A simple app — a handful of screens, basic navigation, no real-time data — costs far less than one with accounts, payments, messaging, push notifications, offline mode, or real-time location tracking. Each of those is its own chunk of engineering work, not a checkbox.
Backend and infrastructure
An app that just displays static content needs very little backend work. An app that manages accounts, stores user data, processes payments or syncs across devices needs real backend infrastructure — a database, an API, hosting — which is often a larger share of the cost than the app itself.
Design
A generic, functional interface costs less than custom, branded design with original illustrations, animations and a polished onboarding flow. Design cost scales with how many unique screens and states (empty, loading, error) need to be designed, not just the number of features.
Integrations
Connecting to payment gateways, maps, third-party logins, or an existing system like a CRM or LMS each adds scope — usually smaller than building a feature from scratch, but rarely free.
Post-launch maintenance
An app isn’t finished at launch. Operating systems update, devices change, and bugs surface under real usage. Ongoing maintenance and updates are a recurring cost most first-time app owners underbudget for.
Rough categories, not quotes
Without naming figures that would be misleading outside a real scope, app projects generally fall into a few shapes:
- A simple, single-purpose app — a handful of screens, no complex backend. The fastest and least expensive category.
- A standard business app — accounts, a real backend, a handful of core features. The most common category for a first product.
- A complex, multi-platform product — payments, real-time features, heavy integrations, native on two platforms. The most expensive category, and usually built in phases rather than all at once.
Any vendor who gives you a firm number before understanding which of these you actually need is guessing.
Native vs cross-platform: the cost trade-off
Native development (building separately for iOS and Android) gives the best performance and full access to each platform’s features, at a higher cost since there are effectively two codebases. Cross-platform frameworks can reduce that cost by sharing code, which can make sense for simpler apps or when speed to launch matters more than squeezing out the last bit of performance. Neither is universally right — it depends on what the app actually needs to do.
How to get an accurate estimate
- Write down what the app actually needs to do, not just what it should look like.
- Decide which platform(s) matter most for your actual users, not every platform that exists.
- Separate “must-have” from “nice-to-have.” A smaller first version that launches sooner beats a large one that never ships.
- Ask what’s included after launch — maintenance, bug fixes and store updates are ongoing, not one-time.
Signs a quote is too good to be true
A quote that’s dramatically cheaper than others for the same scope usually means something is missing: no real backend, a template reused across many clients, no design work, or no support after launch. Ask specifically what’s included before comparing numbers.
Hidden costs people forget to budget for
- App store fees. Developer accounts for Apple and Google both carry fees, small on their own but easy to forget when budgeting.
- Third-party services. Maps, push notifications, analytics and payment processing often charge their own ongoing fees as usage grows.
- Hosting and backend costs. These scale with users — an app that goes from 100 to 10,000 users doesn’t cost the same to run.
- Customer support tooling. Once real users exist, someone needs a way to handle their questions and bug reports.
- Store review delays. Both Apple and Google review new submissions and updates, which can add days to a launch timeline that a budget didn’t account for.
Should you start with an MVP?
An MVP (minimum viable product) is the smallest version of an app that still delivers real value — enough to test whether people actually want it, before investing in every feature on the wishlist. For most first-time app owners, this is the financially sensible path: a smaller, focused first version costs less, launches sooner, and gives real usage data to guide what actually gets built next, instead of guessing at a full feature set upfront and finding out later which half nobody used.
How Floral Gray builds apps
We build native iOS and Android apps — design, development, store submission and ongoing support — by the same team that ships Floral Gray LMS across five platforms. We scope projects around what the app actually needs to do, then quote against that, not a generic package. See our mobile app development services, or get in touch for a quote.