App Development Miami — iOS, Android & Cross-Platform
Miami.
iOS, Android, and cross-platform mobile apps built for Miami startups and established businesses. From MVP validation to App Store launch and beyond.
Mobile apps engineered to ship — and earn five-star reviews.
Hiring an app developer in Miami usually means choosing between solo freelancers who disappear mid-project and agencies that quote $200,000 to build a TODO list. JAAR Design sits in the middle — a Miami-based team that builds production-grade mobile apps without the agency markup.
We build native iOS in Swift, native Android in Kotlin, and cross-platform in React Native and Flutter when it makes business sense. Backend in Node, Python, or Firebase depending on your scale plans. Push notifications, in-app purchases, social auth, deep linking, analytics, crash reporting — all standard.
Most of our app projects start with a paid 1-week discovery sprint. You leave with a real product spec, screen wireframes, a tech stack recommendation, and a fixed-price quote for the build. No vague hourly estimates that triple by month three.
What we build
Mobile app development services
Native iOS apps
Swift + SwiftUI. App Store submission, TestFlight beta, in-app purchases, Sign in with Apple, push notifications.
Native Android apps
Kotlin + Jetpack Compose. Google Play submission, internal testing, in-app billing, FCM push, Material 3 design.
Cross-platform builds
React Native or Flutter when you need iOS + Android from one codebase. We choose the right approach based on your roadmap.
Backend & APIs
Node, TypeScript, Postgres, Firebase, Supabase. Custom REST or GraphQL APIs that scale with your user base.
MVP & prototyping
Validate fast. We build clickable prototypes and minimum viable products in 6–10 weeks so you can test with real users before committing to v2.
Existing app rescues
Inherit an app that crashes, ships slowly, or no one understands? We audit, document, and either continue or rebuild — your call.
Why JAAR Design
A Miami mobile app team that ships
Most app development agencies in Miami either subcontract overseas or focus exclusively on enterprise contracts. JAAR Design works directly with founders, marketing teams, and operators who need a real partner — not a project manager forwarding emails.
We have shipped apps for healthcare, real estate, and personal brands. Every project ships with App Store / Play Store assets, ongoing crash monitoring, and a maintenance plan so the app does not slowly degrade.
FAQ
Frequently asked questions
How much does it cost to build an app in Miami?
MVP apps typically range from $15,000 to $60,000 depending on complexity. Full production apps with backends, admin dashboards, and complex flows usually run $60,000 to $250,000+. We provide a fixed quote after the discovery sprint so you know exactly what you are paying for.
How long does mobile app development take?
Simple MVPs ship in 8–12 weeks. Mid-complexity production apps run 4–6 months. Apps with complex backends, payments, or compliance requirements take 6–12 months. We share a phased timeline so you see progress monthly.
iOS, Android, or cross-platform?
Depends on your audience and roadmap. If you need to launch fast on both platforms, React Native or Flutter wins. If you need premium native UX or platform-specific features (ARKit, HealthKit, etc.), native is worth the extra investment. We recommend after understanding your users.
Do you handle App Store and Play Store submissions?
Yes. App Store Connect setup, TestFlight beta distribution, App Store Optimization (ASO) basics, Google Play Console submission, internal testing, store listings, and screenshots are all part of the project.
Can you maintain my app after launch?
Yes. Monthly retainers cover OS update compatibility, crash fixes, security patches, dependency upgrades, and small feature additions. Apps that are not maintained slowly degrade — most clients keep us on retainer.
Have a mobile app idea?
Schedule a free 30-minute call. We will tell you whether your idea needs an app or just a great mobile website — and what a realistic budget looks like.