Most of the world now reaches the internet through a phone first, and mobile-first product thinking is increasingly the correct default for any business serving consumers. The question here is not "should we have a mobile app?" but "how do we build one that works, and what will it cost?"
This guide gives honest, specific answers to the cost question — plus the context you need to evaluate quotes from development firms and avoid common procurement mistakes.
What Determines Mobile App Development Cost?
Mobile app development is priced on time — specifically, on the number of hours of skilled engineering required to build the application. Every other factor is a proxy for time:
Platform (iOS, Android, or both) Building for a single platform (either iOS-only or Android-only) costs approximately 40–60% less than building for both. React Native and Flutter allow a single codebase to run on both platforms, reducing cost significantly versus building two separate native apps — but they carry engineering tradeoffs for performance-critical or hardware-intensive applications.
Feature complexity A simple informational app with static content costs a fraction of a transactional app with user authentication, payment integration, real-time notifications, and offline sync. The single biggest driver of cost is the number of user flows and the depth of backend integration required.
Backend requirements Most apps need a backend: an API, a database, authentication, push notification infrastructure, and admin tooling. Backend development often costs as much or more than the frontend app itself, particularly for apps with complex business logic (loan processing, order management, multi-party workflows).
Design requirements UI/UX design is a distinct cost from engineering. Professional app design — user research, wireframing, high-fidelity prototyping, asset creation — typically adds 20–35% to a project budget. Apps built without dedicated design investment almost always require expensive rework.
Integration complexity Payment integrations (Stripe, Apple Pay, Google Pay, mobile money), third-party APIs (ERP systems, CRMs, logistics platforms), government portals, and payment gateways each add meaningful development time. An app that integrates with six external systems costs significantly more than one with no integrations.
Regulatory requirements Apps in financial services, healthcare, and insurance face specific regulatory requirements — payment-regulator rules, data protection and data localisation laws, security testing requirements. Compliance work is often underestimated in initial quotes.
Realistic Cost Ranges for Mobile App Development
The following ranges are based on market rates for professional development by qualified senior engineers, not commodity development.
Simple informational or content app (iOS or Android) USD 10,000 – USD 30,000 Examples: restaurant menu app, service directory, events app, company brochure app Features: content display, simple navigation, push notifications, basic user profile
MVP (Minimum Viable Product) — transactional app, single platform USD 30,000 – USD 80,000 Examples: delivery ordering app, field service app, loyalty programme, customer portal Features: user registration/auth, core transactional flow, payment integration, basic admin
Full-featured consumer app, both platforms USD 80,000 – USD 250,000 Examples: fintech app, healthcare platform, marketplace, logistics app Features: multi-role auth, complex business logic, multiple payment methods, real-time features, analytics, admin dashboard
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Enterprise mobile application USD 250,000 – USD 750,000+ Examples: bank mobile banking app, insurance platform, multi-tenant SaaS mobile client Features: enterprise SSO, advanced security, offline-first architecture, API gateway integration, regulatory compliance, phased release programme
You will find quotes well below these ranges, but they often come with coordination overhead, time-zone misalignment, code quality variability, and the practical difficulty of fixing production issues with a team you cannot reach.
Cross-Platform vs Native Development
React Native Facebook's framework for building cross-platform apps using JavaScript/TypeScript. Mature ecosystem, large global developer talent pool, excellent for most business applications. Performance is appropriate for the majority of use cases but falls short for graphics-intensive or hardware-intensive applications. Apps built in React Native are often indistinguishable from native to end users.
Flutter Google's cross-platform framework using the Dart language. Faster UI rendering than React Native for complex interfaces, strong tooling, growing ecosystem. Slightly smaller talent pool, but growing rapidly. Good choice for apps with complex, custom UI requirements.
Native (Swift/Kotlin) Building separate codebases for iOS (Swift) and Android (Kotlin) delivers the best performance, deepest platform integration, and the smoothest user experience. Costs approximately 60–80% more than cross-platform for equivalent feature sets. Justified for: apps with heavy animations or graphics, apps requiring deep hardware access (camera, biometrics, Bluetooth), or apps where marginal performance improvements have direct business impact.
For most business applications — field service apps, customer portals, mobile banking lite experiences, logistics tracking — React Native or Flutter is the right choice. Native development makes sense for consumer-facing fintech where performance perception directly affects conversion and retention.
What to Watch Out For When Evaluating Quotes
Suspiciously low quotes Development that appears to cost half the market rate is typically achieved by: using junior engineers, generating boilerplate code with minimal customisation, cutting corners on testing, or planning to bill for extensive change orders once the project has started. The cheapest quote almost always becomes the most expensive project.
Fixed-price quotes based on minimal specification A firm that provides a fixed price before understanding your requirements in detail is either guessing or planning to use the change order mechanism to recover their margin. Legitimate fixed-price engagements require a detailed specification as the basis for pricing.
No mention of testing or QA Professional mobile development includes unit testing, integration testing, device testing across the target device matrix, and user acceptance testing. Firms that do not mention testing in their proposal are not doing it.
No post-launch support terms Every mobile app has issues in the first 90 days after launch — unexpected device behaviour, performance issues under real user load, edge cases not caught in testing. Understand exactly what post-launch support is included before signing.
Unclear IP and handover terms You should own the source code of your application. This should be stated explicitly in the contract. Firms that retain code ownership or make handover difficult are creating dependency by design.
Our Mobile Development Practice
We build mobile applications for businesses worldwide. Our delivery model:
- React Native and Flutter for cross-platform applications; Swift and Kotlin for native requirements
- Full-stack delivery: we build the app, the backend API, the admin dashboard, and the infrastructure
- Payment integration specialists: Stripe, Apple Pay, Google Pay, and mobile money (including M-Pesa) for complex payment flows
- Agile delivery: you see working software every sprint, not just status reports
- ISO 27001-certified security practices throughout the development lifecycle
- Full source code ownership and clean handover at project completion
All engagements include post-launch support for 30 days as standard. Ongoing maintenance retainers are available.
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Mobile applications for businesses worldwide. React Native, Flutter, Swift, Kotlin. Get a quote →
Tags
- Mobile App Development
- iOS
- Android
- React Native
- Flutter
- Cost
Written by
Gideon Ondari
An independent engineering practice building platforms, automation and security.
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