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Willowcy Services

Mobile App Development

We build native iOS and Android apps and cross-platform solutions with React Native and Flutter. From concept to App Store, we handle design, development, and deployment, built for performance and long-term reliability.

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Mobile App Development

We build mobile applications that people actually use. From the first discovery call to App Store approval, we own the full process: product thinking, UX design, engineering, and post-launch support.

Our mobile work is predominantly React Native with Expo, which lets us share logic and types across iOS and Android from a single TypeScript codebase. For projects that demand deep OS integration, real-time performance, or platform-specific UI, we build natively in Swift and Kotlin.

We have shipped apps across a range of verticals: field service tools, volunteer coordination platforms, client portals, IoT dashboards, and consumer products. The common thread is that each one was designed around how the end user actually works, not around what was easiest to build.

Every app we deliver includes full App Store and Google Play submission, production-ready architecture, and a handover that leaves your team in control of what comes next.

Everything you need to succeed

Native iOS development (Swift / SwiftUI)
Native Android development (Kotlin)
Cross-platform with React Native & Flutter
App Store & Google Play deployment
UX/UI design & interactive prototyping
Backend APIs & real-time sync
Ongoing maintenance & version updates

How we work

01

Discovery

We map your users, your constraints, and the core problem the app needs to solve. This shapes every decision that follows.

02

UX and design

Wireframes, user flows, and high-fidelity screens. We design for the platform conventions of iOS and Android, not against them.

03

Development

Iterative builds with working software at the end of every sprint. You see real progress, not slide decks.

04

QA and testing

Device testing across iOS and Android, automated test coverage, and performance profiling before any release.

05

Store submission

We handle App Store and Google Play submission, including metadata, screenshots, and review response if needed.

06

Launch and support

Post-launch monitoring, crash reporting, and ongoing maintenance so the app stays healthy as usage grows.

Technologies we use

React NativeExpoSwiftSwiftUIKotlinJetpack ComposeTypeScriptSupabaseFirebaseRevenueCat

Common questions

How long does it take to build a mobile app?

A focused MVP with clear scope typically takes 8 to 14 weeks. Full-featured apps with complex integrations range from 4 to 6 months. We scope precisely in discovery so there are no surprises.

Do you build for both iOS and Android?

Yes. We default to React Native for cross-platform delivery, which gives you both platforms from one codebase. For projects that need native-only development, we build in Swift for iOS and Kotlin for Android.

Can you take over an existing app?

Yes. We do codebase audits, identify what is salvageable, and take over ongoing development. We have done this with React Native, Flutter, and native apps.

Do you handle App Store and Google Play submission?

Yes. We manage the full submission process including provisioning, metadata, screenshots, and any back-and-forth with Apple or Google review teams.

What happens after launch?

We offer retainer-based maintenance and feature development. Most clients stay with us for at least one update cycle after launch. We make sure handover is clean whether you continue with us or bring work in-house.

Ready to Start?

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Ready to transform your ideas into powerful digital solutions? Let's bring your vision to life with cutting-edge technology.

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