iPhone App Development Services

Apps That Get
Downloaded &
Drive Revenue

CrestCoder builds native iPhone apps for consumer businesses, fintech, e-commerce, and social platforms. Swift 6, ARKit 6, Apple Intelligence, Apple Pay. Apps that engage users and drive measurable business results.

Get a Free App Quote See Our Work

60+

iPhone apps in App Store

2M+

Combined downloads

4.6

Average app rating

iPhone in 2026

Consumer apps that
convert and engage

iPhone users expect fast, beautiful, frictionless apps. ARKit 6 delivers breakthrough AR. Apple Intelligence runs on-device for smart features. Apple Pay converts faster than web. Swift 6's strict concurrency eliminates crashes. This is the production standard — and apps built to this standard win.

95% accurate AR

ARKit 6 with LiDAR — product try-on, real estate visualization, interactive gaming, navigation features.

On-device Apple Intelligence

Smart text editing, context-aware suggestions, on-device ML — privacy-first, no cloud dependency.

Frictionless payments

Apple Pay one-tap checkout, in-app subscriptions, StoreKit 2 — proven to increase conversion 30-50%.

Crash-free production code

Swift 6 strict concurrency catches data races at compile time — apps that just work.

What We Build

iPhone app types
we specialize in

Consumer Social Apps

Gen Z-focused social platforms with native engagement, feed optimization, and real-time updates.

Fintech & Payments

Banking, wallets, investments — with Apple Pay, biometric security, and fraud prevention built-in.

E-Commerce Storefronts

Shopping apps with Apple Pay checkout, product visualization, inventory sync, and analytics.

Marketplace Apps

Buyer-seller platforms with messaging, ratings, in-app payments, and user trust mechanics.

AR Product Features

ARKit 6 integration for try-on, visualization, interior design, and immersive shopping.

App Marketing & Growth

App Store optimization, launch strategy, retention tuning, and conversion rate optimization.

iPhone Apps in the Wild

Consumer apps
winning on iPhone

Online Yoga Platform

Wellness · Subscriptions

Online Yoga Platform — Subscription Engagement

Challenge

A yoga studio needed an iPhone app for live classes, recorded sessions, and membership management — with high retention and low churn rates.

Solution

We built a native iPhone app with live streaming, progress tracking, Apple Pay subscriptions, and push notifications for class reminders. Result: 45% subscriber retention improvement.

45%Retention improvement

$150kMonthly subscriptions

View Full Case Study →

Circadian Sleep

Health · Wearables

Circadian — Sleep Tracking Consumer App

Challenge

A health startup needed a consumer iPhone app with wearable integration, AI-powered insights, and Apple Health sync — designed for casual users, not clinicians.

Solution

Native iPhone app with WatchKit for wearables, HealthKit integration, and on-device ML for sleep scoring. Clean, intuitive UI for mainstream users. 50k+ downloads in 3 months.

50k+Downloads post-launch

4.7App Store rating

View Full Case Study →

View All Case Studies

Why CrestCoder

iPhone teams
that ship winners

Consumer app expertise

60+ iPhone apps shipped, 2M+ downloads. We know user acquisition, retention, and conversion.

Modern Swift stack

Swift 6, SwiftUI, ARKit 6, Apple Intelligence — production-ready from day one, no legacy code.

App Store veterans

We navigate App Store review, ASO, and launch strategy. Apps that ship on schedule.

Growth mindset

We build for users, conversion, and retention — not just features. Apps that grow.

How We Work

Our iPhone app
development process

Discovery & strategy

Map user personas, revenue model, App Store positioning, and feature MVP. Growth metrics defined upfront.

Design for conversion

High-fidelity Figma mockups optimized for iPhone screen sizes, thumb-friendly interactions, and Apple HIG.

Agile sprints with TestFlight

Two-week sprints, working TestFlight builds every sprint — you test on real iPhones throughout.

Optimization & launch prep

App Store optimization, screenshots, marketing assets, ASO strategy, and review submission.

Launch & growth

App Store submission, launch marketing, analytics setup, and ongoing retention optimization.

Questions?

Frequently
asked

Still have questions? Contact us directly.

What makes an iPhone-optimized app different from iPad?+

iPhone apps are designed for smaller screens (6.1-6.9 inches), thumb-friendly navigation, and immediate micro-interactions. iPad apps use larger canvases and multi-column layouts. We build specifically for iPhone user behavior — quick actions, vertical scrolling, bottom navigation.

Can we add AR features with ARKit 6?+

Yes — ARKit 6 delivers 95% object tracking accuracy, realistic shadows and reflections, and LiDAR integration. We build AR features for product try-on, real estate visualization, navigation, and gaming. Privacy-first, all processing on-device.

How do we integrate Apple Intelligence?+

Apple Intelligence runs on-device (iOS 26+). We integrate for smart text editing, context-aware suggestions, on-device ML models, and privacy-first AI features. No cloud required, full user privacy.

What about Apple Pay and in-app payments?+

We integrate Apple Pay, in-app subscriptions, and StoreKit 2 for seamless mobile commerce. Security, fraud prevention, and PCI compliance are built-in.

How fast can we launch an iPhone app?+

MVPs typically launch in 8-12 weeks. Full-featured consumer apps usually take 16-24 weeks. We follow agile sprints with working TestFlight builds every two weeks.

How do you price an iPhone app?+

Most projects are quoted as fixed price after discovery. A consumer app MVP starts around $8,000-$15,000. Fintech apps with payments integration usually run $15,000-$40,000+, depending on complexity.

Let's Launch

Tell us about
your iPhone app

We reply within 24 hours with timeline, estimate, and launch strategy — no obligation.

Apps That GetDownloaded &Drive Revenue

Consumer apps thatconvert and engage