Mobile App Development
One team. Both stores. Backend included.
Cyfox builds mobile apps for US and Canadian companies as a full outsourced team: Flutter for cross-platform speed, Swift and Kotlin where native performance matters, plus the backend, QA, and app-store launch work most agencies leave out. One team owns the app end to end.
[ 01 / capabilities ]
What this service covers.
01
Cross-platform with Flutter
One codebase for iOS and Android — the right default for most products, cutting build and maintenance cost roughly 40% versus dual-native.
02
Native iOS & Android
Swift and Kotlin builds when the product demands platform-specific performance, hardware access, or native UX depth.
03
Backend & APIs for mobile
Authentication, push notifications, offline sync, and the API layer — designed alongside the app, not bolted on after.
04
Launch & store operations
App Store and Play Store submission, review-rejection handling, crash monitoring, and staged rollouts.
[ 02 / the details ]
How we run it.
Flutter or native — how we decide
We recommend Flutter for roughly four out of five products: it ships to both stores from one codebase and keeps long-term maintenance cost down. We recommend native Swift/Kotlin when an app leans hard on platform hardware (camera pipelines, Bluetooth peripherals, widgets/watch apps) or needs every millisecond of UI performance. The recommendation comes with reasoning and cost comparison — you make the call with real numbers.
Quality on real devices
Every release candidate runs through automated test suites plus manual passes on physical iOS and Android devices across screen sizes — not just simulators. Crash-free-session rate and app-store rating are tracked as delivery metrics, because a 4.6-star app and a 3.8-star app are different businesses.
After launch
App stores move: OS releases, policy changes, dependency deprecations. Most clients keep a part-time maintenance allocation post-launch — typically 20–40 hours a month — that covers OS updates, store compliance, monitoring, and a steady stream of small improvements.
[ 03 / questions ]
Mobile App Development — FAQ.
How much does outsourced mobile app development cost?
A production-quality Flutter MVP for both stores typically runs $35,000–$90,000 including backend and launch. Native dual-platform builds cost roughly 60–80% more than cross-platform for equivalent scope.
Should we build with Flutter or native iOS/Android?
Flutter is the right default for most products — one codebase, both stores, lower lifetime cost. Go native when you need deep hardware integration or platform-specific UX. We give you a written recommendation with cost comparison before any code is written.
Do you handle App Store and Play Store submission?
Yes — submission, review-rejection handling, store listing assets, and staged rollouts are part of every launch engagement.
Can you take over an existing mobile app from another team?
Yes. Takeovers start with a one-week code audit covering architecture, test coverage, and store health, followed by a stabilization plan before new feature work begins.
[ next step ]
Need mobile app development? Tell us the spec.
NDA first. A scoped estimate inside one week. No pressure after.