iOS App Development
iOS apps that feel native
Elegant, high-performance iPhone and iPad apps built with Swift and SwiftUI, crafted to Apple’s standards.
Overview
A partner for your iOS App Development goals
Excellon delivers end-to-end iOS App Development services for startups, SMBs and enterprises. Elegant, high-performance iPhone and iPad apps built with Swift and SwiftUI, crafted to Apple’s standards.
From discovery and design through development, testing and launch, we tailor our approach to your goals, timeline and budget — and keep you informed at every step so there are no surprises.
What we offer
Swift & SwiftUI
Modern native development for fast, fluid apps.
App Store Launch
From submission and review to a successful release.
Apple Ecosystem
Apple Watch, iPad, widgets and deep iOS integrations.
Native quality
Crafted for Apple users
- Native performance
- Human Interface Guidelines
- Secure and private by design
- Ongoing updates and support
Why choose Excellon
Experienced Team
Senior developers, designers and marketers who have shipped products at scale across industries.
Transparent Delivery
Clear timelines, regular demos and honest communication, so you always know where your project stands.
Results-Focused
Everything we build is tied to measurable outcomes — speed, conversions, retention and revenue.
In depth
Native Swift, the way Apple intends
We build iOS apps in Swift and SwiftUI against current Apple SDKs, following the Human Interface Guidelines so your app feels instantly familiar to iPhone users. Accessibility, Dynamic Type and dark mode are handled from the first screen, not retrofitted before submission.
Performance is treated as a feature: cold-start budgets, smooth 120Hz scrolling on ProMotion displays, and memory profiling on older devices your customers actually own. TestFlight betas keep you involved at every sprint.
What is included
- Swift and SwiftUI codebase with modern concurrency
- Apple ecosystem — widgets, Siri shortcuts, Apple Pay, watchOS
- TestFlight pipeline for weekly stakeholder builds
- App Store submission with review-rejection insurance baked in
Frequently asked questions
Will my app pass App Store review?
We design against Apple review guidelines from day one — privacy labels, sign-in rules and payment policies — and if a review ever stalls, resolving it is on us.
Do you build with Swift and SwiftUI?
Yes. We use modern Swift and SwiftUI against current SDKs, with UIKit where a screen needs it, so your app stays maintainable for years.
Can you add widgets, Apple Pay or Apple Watch support?
We scope ecosystem features like widgets, App Clips, Apple Pay and watchOS companions where they add real value, and skip them where they only add cost.
Which iPhones and iOS versions do you support?
We typically target the two latest major iOS versions, covering the vast majority of active devices, and test on a physical-device lab, not just simulators.
Do you provide TestFlight builds during development?
Yes. You get regular TestFlight betas so you and your stakeholders can try every sprint and give feedback before launch.
How we deliver
A clear path from idea to launch
1
Discovery
We learn your goals, users and constraints to define what success looks like before any code is written.
2
Design & Plan
We map the architecture and craft interfaces and prototypes you can see, test and refine early.
3
Build & Test
We develop in short, fully tested sprints with visible progress and quality checks at every step.
4
Launch & Grow
We ship carefully, then maintain, monitor and improve your product as your business scales.
Let’s build something great together
Tell us about your project and we’ll show you how Excellon can help you grow.