There's no single, honest answer to this question, because two apps described in one sentence, "an app for my business," can end up costing wildly different amounts depending on the features underneath that sentence. How much does it cost to build a mobile app depends primarily on complexity tier, feature set, and development approach, not on the fact that it's "an app" at all, which is why most single-number answers online are either misleadingly low or too broad to actually budget against.
Quick Answer: Typical Mobile App Development Costs
A simple app with minimal custom functionality typically falls in the lower cost tier. A mid-complexity app with user accounts, a database, and a few integrations typically costs significantly more than a simple app. A complex app with payment processing, multiple third-party integrations, and custom backend logic typically costs the most, and the gap between these tiers is driven almost entirely by feature count and development approach rather than app category.
Cost by App Complexity
App complexity directly affects development time and cost.The most useful way to estimate a mobile app's cost is to identify which complexity tier it actually falls into, since "mobile app" isn't one uniform pricing category.
A booking app with no user accounts and a mid-complexity app with authentication and a database can look similar from the outside but require very different amounts of development work underneath, which is exactly why generic single-number cost answers are unreliable without knowing which tier a project actually belongs to.
What Specifically Drives Cost Up
Advanced features and integrations increase development costs.Certain individual features add real, identifiable development time and cost, and knowing which ones matters more than a vague sense that "custom features cost more."
Authentication: User accounts, login/logout, password recovery, and permission levels all add both development and testing time beyond a public-facing app with no accounts.
Push notifications: Setting up and testing a reliable push notification system, including handling different notification states across devices, adds measurable development time.
In-app payments: Payment integration requires not just connecting a processor, but also testing edge cases like failed payments, refunds, and different currencies.
Third-party API integrations: Every external service connected (CRMs, analytics tools, mapping services) adds setup, error handling, and testing specific to that integration.
Custom backend logic: Business rules or workflows that can't be handled by an existing service require custom-built code, which costs more than configuring an off-the-shelf tool.
Admin dashboards: A separate interface for managing app content or users, built outside the main app itself, adds a meaningful amount of additional development work.
Does adding push notifications increase app development cost? Yes, push notifications add measurable cost because they require both the technical setup and testing across different device states, on top of the core app functionality already being built.
Native vs Cross-Platform: How the Approach Affects Cost
Native and cross-platform development differ in cost and maintenance.The choice between native and cross-platform development shifts cost both at launch and over the app's lifetime, and this connection is worth understanding before budgeting.
Cross-platform development uses a single shared codebase to build for both iOS and Android at once, which is typically cheaper both to build and to maintain compared to native development. Native development builds two separate applications, one for iOS and one for Android, which typically costs more upfront and continues costing more over time, since every future update has to be built and tested twice instead of once.
Is it cheaper to build a native or cross-platform app? Cross-platform is typically cheaper to build and maintain due to a single shared codebase, while native typically costs more both upfront and long-term due to separate iOS and Android codebases requiring parallel development.
Cross-platform: Lower build cost, lower maintenance cost, generally strong performance for standard business apps
Native: Higher build cost, higher maintenance cost, better fit for performance-intensive or hardware-heavy apps
A common issue is comparing a native quote and a cross-platform quote for the same app without recognizing that the two numbers reflect different long-term maintenance commitments, not just a different starting price.
Costs Most Estimates Leave Out (Post-Launch Costs)
Hosting, maintenance, and updates add ongoing expenses.The build price is only part of the total cost, and most estimates stop there instead of covering what comes after launch.
Hosting and backend infrastructure: Ongoing server, database, and backend service costs continue for as long as the app is live, separate from the initial build price.
App store fees: Both Apple's App Store and Google Play charge developer fees to list and maintain an app, according to their own official developer documentation, which is worth checking directly for current rates.
Ongoing maintenance and updates: OS updates, bug fixes, and security patches require continued development work after launch, not just at the initial build stage.
Customer support tooling: Apps with user accounts or transactions often need support infrastructure (help desks, in-app messaging) that adds its own ongoing cost.
How much does it cost to maintain a mobile app after launch? Ongoing maintenance, hosting, and updates are a real recurring cost that most upfront quotes don't include, and should be budgeted separately from the initial build price rather than treated as a one-time expense.
How to Get an Accurate Cost Estimate for Your App
Getting a reliable quote depends more on what information you bring to the conversation than on which agency or developer you ask.
Have a clear feature list ready: Vague descriptions like "an app for bookings" produce vague quotes; a specific list of what the app needs to do produces an accurate one.
Decide on target platforms upfront: Whether the app needs iOS only, Android only, or both affects both the quote and the native-vs-cross-platform recommendation you'll get.
Identify any required integrations: Payment processors, CRMs, or other third-party services should be named specifically, since each one affects cost individually.
Plan for who maintains the app post-launch: A quote that only covers the initial build, without a maintenance plan, is missing a real ongoing cost that will need to be budgeted separately.
Be skeptical of unusually low anchor numbers: A quote significantly below others for the same feature list is worth questioning closely, since it may exclude testing, post-launch support, or key features without stating so clearly.
Conclusion
Cost depends far more on feature complexity and development approach than on a single flat "app" price; a simple booking app and a payment-processing e-commerce app both technically count as "a mobile app," but they sit in entirely different cost tiers.
Post-launch maintenance and hosting are real, ongoing costs that should be budgeted alongside the initial build price, not treated as an afterthought. Mapping your own app idea to one of the three complexity tiers covered here is a more realistic starting point than anchoring to a single generic number from a search result.
If you have a specific app idea in mind, talk to our team about a scoped cost estimate; we'll map your actual feature list to a realistic budget rather than a rough guess.