Native iPhone App Development
Swift and SwiftUI apps built to Apple Human Interface Guidelines with buttery 120Hz ProMotion performance. We target the latest iOS while maintaining compatibility two versions back, covering 95%+ of active devices.
Mobile App
iOS App Development
Premium iOS apps crafted for the Apple ecosystem.
Native Swift and SwiftUI applications optimized for iPhone, iPad, and Apple Watch — following Human Interface Guidelines for a polished Apple experience.
Our Offerings
iOS App Development Services We Provide
iPad & Multi-Device Apps
Adaptive layouts, Split View multitasking, and Apple Pencil support that make iPad apps feel purpose-built, not stretched. One codebase elegantly serves iPhone, iPad, and Mac via Catalyst where it makes sense.
Apple Watch & Ecosystem Apps
watchOS companions, widgets, Live Activities, App Clips, and Siri integrations that keep your brand present across the Apple ecosystem. Widgets and Live Activities measurably lift daily engagement for the apps we ship.
SwiftUI Migration
Incremental migration from UIKit and Objective-C to SwiftUI without halting your release schedule. Modernized codebases cut new-feature development time by 25-40% and attract stronger engineering talent.
iOS App Security & Compliance
Keychain storage, certificate pinning, biometric auth (Face ID/Touch ID), and data handling aligned with HIPAA and PCI DSS for regulated apps. We also prepare App Privacy labels and ATT compliance for App Store review.
In-App Purchases & Subscriptions
StoreKit 2 implementation with paywalls, free trials, receipt validation, and churn analytics via RevenueCat or custom backends. Well-built paywall flows typically convert 1.5-2x better than bolt-on solutions.
What We Deliver
End-to-End iOS App Development
- Swift & SwiftUI
- Apple Watch support
- iCloud sync
- Face ID / Touch ID
- App Store optimization
- TestFlight beta
Why Choose Devlex
Business Outcomes That Matter
✓Premium user experience
✓Apple ecosystem integration
✓Higher revenue per user
✓Strong brand trust
Technologies
Tools & Stack We Use
We pick the right technology for your goals — not the trendiest framework.
- Swift
- SwiftUI
- Xcode
- Core Data
- ARKit
- Firebase
Our Approach
- Discover — Understand goals & constraints
- Design — Architecture & UX blueprint
- Build — Agile sprints with weekly demos
- Launch — Deploy, test & support
0Years of Experience
0Projects Delivered
0Global Clients
0In-house Experts
0Countries Served
0Code Ownership
How We Work
What You Get In Writing
Terms that go into every agreement we sign. See all client commitments.
A Written Price Before Work Starts
Every job gets a scope and a number in writing first — a fixed price for defined work, or an hourly rate with a capped estimate. If scope changes, we re-quote before we build, not after.
You Own the Code
Source code, designs, and data are yours. We work in your repository where possible, hand over full documentation, and transfer everything at the end. No license fees, no hostage situations.
NDA Before You Share Anything
We sign your NDA — or send ours — before the first technical conversation. Your idea, your data, and your customer information stay confidential during and after the engagement.
FAQ
iOS App Development — FAQs
Everything you need to know before starting your project. Still have questions? Talk to our team.
Consumer and lifestyle apps, fintech apps with biometric security, HIPAA-compliant healthcare apps, AR experiences with ARKit, and enterprise apps distributed via Apple Business Manager. All are written in Swift/SwiftUI by our in-house iOS team.
An iOS MVP takes about 3 months; a polished, full-featured app takes 4-6 months including backend and App Store launch. Adding watchOS or widget extensions typically adds 2-4 weeks each.
Most iOS projects land between $15,000 and $50,000 depending on screens, integrations, and backend complexity; simple utility apps can start around $10,000. You will also need an Apple Developer account at $99/year.
Yes — the Xcode project, all Swift source, certificates, and provisioning profiles are delivered under your Apple Developer account with full IP rights. Any iOS team can pick up the codebase from our documentation.
90 days of free bug fixing, then maintenance from $800/month covering annual iOS version updates, new device support, crash monitoring with Crashlytics, and dependency upgrades. Apple ships a major iOS release every September, and we keep clients compatible ahead of public rollout.
We prepare your listing, screenshots, privacy labels, and review notes, then submit through your account. Apple review currently takes 24-48 hours for most apps; our first-pass approval rate is above 90%, and we handle any rejection responses free of charge.
Related Services
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