Mobile app development services for iOS, Android and cross-platform apps
Our mobile app development services cover iOS, Android and cross-platform apps that people still open on day thirty — and we tell you which approach fits your budget before you commit to either.
Store submission, review handling and post-launch monitoring are part of the work, not a change request.
Mobile app development services for US businesses
API Pilot builds mobile apps for startups, retailers, real estate firms and service businesses across the US. We take an idea from feature list to App Store and Google Play listing, and keep it healthy through every OS release that follows.
Native iOS and Android development makes sense when your app leans on the camera, background location, offline sync or heavy animation. Cross-platform development with React Native or Flutter ships one codebase to both stores faster and at lower cost. We put both options, with their two-year cost, in writing before you decide.
Every app we deliver includes the backend and APIs it talks to, push notifications, analytics and crash reporting, and store submission handled end to end — including the review back-and-forth that stalls so many launches.
What separates a mobile app that ships from one that stalls in review
Native where it counts
Camera, offline sync, background location, payments — we go native when the feature demands it and save you money when it doesn't.
Built for store review
Privacy manifests, permission copy and data disclosures done right, so your release isn't rejected twice.
Instrumented from launch
Crash reporting, analytics and staged release channels wired up before v1, so v2 is informed by data.
What our mobile app development services include
Platform strategy
A written recommendation on native vs cross-platform, with the cost of each over two years.
Product & UX design
Screens designed against real device constraints, then tested on hardware, not just a browser.
App development
Swift, Kotlin, React Native or Flutter — chosen for your feature set, not our comfort.
Backend & APIs
Auth, push notifications, offline sync and the API layer the app talks to.
Store submission
Listings, screenshots, metadata and review responses. We handle the back-and-forth.
Monitoring & releases
Crash dashboards, staged rollouts and a fix path that doesn't take a week.
Our mobile app development process
Four stages, weekly demos, no black box.
Discovery & platform choice
Feature list, device targets and the honest cost difference between native and cross-platform.
Prototype on device
A clickable build on a real phone, so navigation problems surface before they're expensive.
Sprint build & QA
Two-week sprints, tested on physical hardware across OS versions, not just simulators.
Launch, monitor, iterate
Store submission, staged rollout, crash triage and a data-led plan for the next release.
Mobile app development technologies we use
Chosen per project, not per habit. Pick a category to see what we reach for.
Industries we build mobile apps for
Retail & Ecommerce
Storefront apps, loyalty programmes and in-store scanning.
Field Services
Offline-first job apps for teams working without signal.
Healthcare
Patient portals and appointment apps built to handle sensitive data.
Logistics
Driver apps with route optimisation and proof of delivery.
Media
Content apps with offline downloads and subscription billing.
Why choose API Pilot for mobile app development
Native and cross-platform expertise
Swift, Kotlin, React Native and Flutter engineers on one team, so the recommendation follows your app, not our habits.
Store approval handled
Privacy manifests, permission copy and data disclosures are prepared up front to avoid repeated rejections.
Tested on real devices
Every sprint is tested on physical iPhones and Android phones across OS versions, not just simulators.
Support after launch
OS updates, SDK upgrades and crash triage are covered by the same engineers who built the app.
Mobile app development case studies
Mobile App Development for Brocali Restaurant
A restaurant app for menu browsing, ordering and real-time delivery tracking.
View case study →
Mobile App Development for StellarStreet Realty
A real estate app with property filters, virtual tours, maps and mortgage calculators.
View case study →
Mobile App Development for McRoyal
A secure office app bringing chat, file sharing, calendars and tasks into one place.
View case study →If the app is mostly screens and API calls, cross-platform ships faster and costs less. If it leans on hardware or heavy animation, native pays for itself. We put both options in writing before you decide.
Yes, including rejections. Privacy manifests, permission justifications and data disclosures are all part of the work.
OS updates break things every year. Our maintenance retainer covers SDK upgrades, crash triage and small feature work.
Often. An audit tells us what's salvageable, and we'll say plainly if a rebuild is cheaper than a rescue.
A focused MVP typically takes 10–14 weeks from discovery to store launch. Apps with complex backends, payments or offline sync take 4–6 months. You get a phase-by-phase timeline with the quote.
You do. The source code, store accounts, backend infrastructure and design files are transferred to you at handover.
Let's scope your app.
A 30-minute call, a written scope, and a fixed quote within 48 hours. No obligation, no sales deck.