Freelance iOS & Mobile App Expert in Belgium

iOS & MOBILE APP DEVELOPMENT

Native iOS apps for iPhone, iPad, Mac and the wider Apple ecosystem. Built with Swift and SwiftUI, with a focus on maintainability, performance and user experience.

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MOBILE CONSULTANCY SERVICES

Work directly with an experienced freelance iOS expert for strategy, architecture and hands-on development.

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MODERNIZE YOUR MOBILE PRODUCT

Extend your app across the Apple ecosystem: Apple Watch, Apple TV, Mac and Apple Vision Pro.

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Services

Alongside custom app development, FirstSecond offers focused services to improve, modernize and maintain mobile products.

Tailor-made mobile apps

FirstSecond builds entirely custom iOS applications that fit your product, users and technical constraints. The focus is performance, maintainability and usability. Apps can also extend to watchOS, tvOS, macOS and visionOS when it makes sense for the product.

On-site consulting

Need senior mobile expertise inside your product team? Work directly with a freelance iOS expert for native Apple platform delivery, technical direction and developer coaching.

Quality & performance audits

If your app feels slow, fragile or hard to evolve, FirstSecond reviews the codebase, architecture and runtime behavior, then turns the findings into clear, actionable improvements.

Swift & SwiftUI migration

FirstSecond modernizes Objective-C, UIKit and older Swift codebases with Swift, SwiftUI, async/await and a more maintainable app structure, while keeping releases controlled and incremental.

App modernization

Older apps often need more than a quick bug fix. FirstSecond updates dependencies, improves project structure, prepares App Store submissions, adds CI/CD where useful, and makes maintenance predictable again.

iPhone, iPad, Mac & Vision Pro

Native apps can work well beyond iPhone. If your existing app only supports iPhone, FirstSecond can update it to support larger screens properly. With SwiftUI and modern Apple frameworks, your product can reach Mac and visionOS contexts without starting from scratch.

How we work

A pragmatic way of working for mobile products that need to move quickly without compromising quality.

Iterate quickly

Work happens in short cycles with visible progress, TestFlight builds and regular feedback so decisions stay grounded in the real product.

Design for the platform

Interfaces are built to feel native on iPhone, iPad, Mac and Vision Pro, with attention to Apple guidelines, accessibility and everyday usability.

Ship with confidence

Architecture, performance, crash monitoring and App Store constraints are considered throughout the work so the app remains stable after launch.

Pricing

Transparent freelance rates for consulting, audits and focused product work. For larger projects, we define the scope together before agreeing on a fixed price.

Consulting day rate

For senior iOS architecture, hands-on development, team support and technical audits.

Contract length	Price (excl. VAT)
1 to 30 days	850€ / day
More than 30 days	750€ / day

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Project-based work

For scoped features, modernization work, audits and smaller apps with clear boundaries.

Simple companion app for your product or business
Marketing or event app
Swift, SwiftUI or UIKit modernization
Performance review or quality audit
Add iPad support to iPhone-only app
Add Mac or Vision Pro support to an existing app
App Store readiness and release support

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