01
Native Swift and SwiftUI apps
iPhone apps written in Swift with SwiftUI, and UIKit where it still makes sense, structured so they stay easy to change.
FIG 01 · iOS App Development
iOS app development company for iPhone and iPad apps
Native Swift and SwiftUI apps designed, built, tested on TestFlight and launched on the App Store, then kept current with every iOS release. You own the code and the App Store account.
See how it works
FIG 02 · Quick answer
What does an iOS app development company do?
Elgrith is an iOS app development company that designs and builds native iPhone and iPad apps in Swift and SwiftUI for UK and US businesses. We handle UX, development, backend and APIs, TestFlight testing and App Store submission, then keep the app current with each iOS release. You own the code.
- SDK every build uses, as Apple requires
- iOS 26
- Projects delivered since 2015
- 1,000+
- Clients across the USA, UK and India
- 250+
- Your code, IP and App Store account
- 100%
FIG 03 · Why it matters
The App Store is huge. The iPhone’s share depends on where you sell.
From Apple’s Newsroom (June 2026, an Apple-funded study) and StatCounter’s mobile OS share for September 2026.
01
$1.4T
App Store ecosystem, 2025
Apple says the global App Store ecosystem facilitated over $1.4 trillion in developer billings and sales in 2025.
Source: Apple Newsroom, 4 Jun 2026(opens in a new tab)02
850M+
Average weekly App Store users
Apple reports over 850 million average weekly users, spanning 175 countries and regions.
Source: Apple Newsroom, 4 Jun 2026(opens in a new tab)03
53.59%
iOS share of mobile in the US
StatCounter puts iOS at 53.59% of US mobile OS share in September 2026. In the UK it is 46.88%, with Android on 53.11%.
Source: StatCounter, US mobile OS share, Sept 2026(opens in a new tab)
FIG 04 · Decide
Native iOS or cross-platform?
Native Swift and SwiftUI give you every Apple feature and the most polished feel. Cross-platform gives you iPhone and Android from one codebase. Here is when each one fits.
| Native (Swift, SwiftUI) | React Native | Flutter | |
|---|---|---|---|
| Best for | iPhone-first products and deep Apple integration | iPhone and Android together, with a web or React team | iPhone and Android with a highly custom UI |
| Apple features | Day-one access: widgets, Apple Watch, Core ML, ARKit | Most features, some through native modules | Most features, some through platform channels |
| Look and feel | Native iOS controls and motion | Native components | Its own rendering engine |
| Codebases | One per platform | One shared, plus native code where needed | One shared, plus native code where needed |
| When not to choose it | When Android has to launch at the same time on a tight budget | When the app is mostly Apple-only features | When the app should feel exactly like iOS |
Many products start native on iPhone and add Android later. Others need both on day one. We build all three and will tell you which fits.
Read React Native vs native in 2026FIG 05 · What you get
iOS app development services
From the first Figma screen to App Review and every iOS update after it, in one team.
02
iPad, Apple Watch and widgets
iPad layouts that use the bigger screen, watchOS companions, home-screen widgets and Live Activities.
03
AI features in iOS apps
On-device models with Core ML for speed and privacy, or LLM APIs for heavier tasks, chosen per feature.
04
App Store launch
TestFlight betas, App Store Connect setup, privacy nutrition labels, screenshots and submission through App Review.
05
Objective-C to Swift and legacy rescues
Older Objective-C apps moved to Swift step by step, and abandoned apps brought back up to Apple’s current requirements.
06
Backend, APIs and admin
The APIs, database, push notifications and admin panel behind the app, built by the same team.
07
iOS UX and UI design
Screens designed in Figma around Apple’s Human Interface Guidelines, with clickable prototypes before any code.
08
Maintenance and iOS updates
Fixes, monitoring and updates for each new iOS release, so the app keeps passing App Review.
Deliverables
12
deliverables, in writing
Included in every build, written into your fixed quote before work starts.
FIG 06 · Apple features
The Apple features we build in
Native apps get the full Apple toolkit. These are the features clients ask for most.
Sign in with Apple
One-tap, privacy-friendly sign-in, alongside email or other providers.
Apple Pay and in-app purchase
Apple Pay for physical goods and StoreKit subscriptions and in-app purchases for digital ones.
Push notifications
APNs notifications that are timely, segmented and easy for users to control.
Widgets and Live Activities
Glanceable information on the home screen and lock screen.
Offline-first data
SwiftData storage and sync, so the app works on the train and syncs when it can.
On-device AI
Core ML for classification, text and image features that run on the phone.
LLM IntegrationAR experiences
ARKit for product previews, measuring and visualization.
Apple Watch companion
A watchOS app for quick actions, health-style tracking or notifications.
FIG 07 · Flagship build
Proof: an app-grade AI product we built
Kenerate AI is our flagship build, an all-in-one AI image and video studio we designed and engineered. It is a web product, not an iOS app; it shows the product design, AI and engineering depth we bring to native apps.
- 23+ studios and tools in one product, from Image Studio to Director
- 200+ AI models behind one app, one login and one credit balance
- Up to 4K output, and credits that never expire
- MCP & CLI: use Kenerate inside Claude, ChatGPT, Cursor and 19+ AI apps
Home: one prompt box for image, video and musicDesigned and engineered by Elgrith
- AI models in one app
- 200+
- Studios and tools
- 23+
- Maximum output
- 4K
- Guides
- 500+
FIG 08 · Apple rules, 2026
Apple requirements we build to (2026)
Checked on Apple’s Upcoming Requirements page in October 2026. Every build we upload meets them.
05principles
Xcode 26 and the iOS 26 SDK
Since 28 April 2026, apps uploaded to App Store Connect must be built with Xcode 26 or later using an SDK for iOS 26.
iOS 13 or later
Since 9 September 2026, iOS and iPadOS apps uploaded to App Store Connect must target iOS 13 or later. We set your real minimum from your own analytics.
Privacy labels and tracking
Privacy nutrition labels filled in from what the app actually collects, and the App Tracking Transparency prompt only when you track.
App Store Review Guidelines
Sign-in, payments, content and data rules checked before submission, so App Review is a formality, not a surprise.
Accessibility
VoiceOver labels, Dynamic Type and contrast built in from the first screen.
Accessibility audits
FIG 09 · USA and UK
iOS in the US and the UK
StatCounter, September 2026: iOS holds 53.59% of US mobile OS share, while in the UK Android leads narrowly with 53.11% to 46.88%. That changes the launch order.
06principles
US: iPhone first often works
With iOS in the majority, many US consumer apps launch on iPhone and add Android next.
App development, New YorkUK: plan both platforms
With Android slightly ahead, UK consumer apps usually need both: native iOS plus Android later, or one cross-platform codebase.
App development, LondonB2B and internal apps
For company-issued iPhones and iPads, your device fleet decides, not national market share.
Your analytics beat the averages
Your website’s mobile traffic split is the best guide to which platform comes first.
Need both on day one?
One React Native codebase for iPhone and Android, with native modules where it matters.
React NativeBudgeting in the UK
What drives app costs in the UK, from public sources.
App development cost UK 2026
FIG 10 · Measurement
How we check an iOS release
Every TestFlight build and App Store release is checked against the same list before it reaches your users.
| Metric | What it tells you | How we measure it |
|---|---|---|
| Crash-free sessions | Stability on real devices | Xcode Organizer and crash reporting, per build |
| Launch time | How fast the app opens | Instruments and on-device testing |
| Memory and battery | Whether the app drains or stalls the phone | Instruments profiling on older supported devices |
| Accessibility | Whether VoiceOver and Dynamic Type users can finish key tasks | Manual VoiceOver checks and Accessibility Inspector |
| App Review readiness | Whether the build will pass review | Our pre-submission checklist against Apple’s guidelines |
| Ratings and reviews | How users feel after each release | App Store Connect ratings and review trends |
Targets are agreed with you before launch. We don’t quote benchmark numbers before we have seen your app and users.
FIG 11 · Process · 6 steps
TestFlight builds, every sprint
A fixed written quote before work starts, and a build on your own iPhone after every sprint.
- Step 01
Discovery
Users, features, platforms and integrations agreed, with a written scope and a fixed quote.
- Step 02
Design in Figma
Flows, screens and a clickable prototype around Apple’s Human Interface Guidelines, signed off before build.
- Step 03
Sprints with TestFlight builds
Short sprints with a weekly demo and a TestFlight build you can install and test on your own devices.
- Step 04
App Review
Privacy labels, screenshots, metadata and the pre-submission checklist, then submission through App Store Connect.
- Step 05
Launch
A staged release, crash monitoring and fixes for anything real users find in the first days.
- Step 06
Maintenance
Updates for each iOS release, new features and monitoring, in a scope agreed in writing.
FIG 12 · What you get
Everything included
Written into your fixed quote, so you know exactly what you are paying for before work starts.
12items
- Written scope and fixed quote
- UX flows and Figma designs
- Clickable prototype
- Native Swift and SwiftUI app
- Backend, APIs and admin panel, where needed
- TestFlight betas every sprint
- Privacy labels and App Store listing
- App Store submission and review
- Crash reporting and analytics
- Accessibility checks with VoiceOver
- Source code and documentation
- App Store account and IP, all yours
FIG 13 · Tech & tools
The tools behind the work
Proven, well-supported tools, chosen for your project and set up in accounts your business owns.
- Swift
- SwiftUI
- UIKit
- Objective-C
- Xcode 26
- TestFlight
- App Store Connect
- StoreKit
- SwiftData
- Core ML
- ARKit
- WidgetKit
- APNs
- Sign in with Apple
- Apple Pay
- Node.js
- PostgreSQL
- Figma
FIG 14 · Who it’s for
iOS apps for every stage.
From a first app to rescuing one that Apple will no longer accept.
3 audiences
Startups
A first iPhone app that can grow.
An MVP with the features that matter, built natively so it doesn’t need rewriting when it works.
- Scope trimmed to the core loop
- TestFlight betas with early users
- Analytics from day one
- Code and IP assigned to you
UK businesses
An iOS partner with a London client partner.
UK clients work with our London client partner, with design and engineering in New Delhi and data handling designed around UK GDPR.
- Contracts, NDA and IP terms in writing
- UK GDPR-aware data handling
- UK spelling and App Store listings
- Weekly demos
Rescue
An app Apple won’t accept anymore.
Older apps brought up to Xcode 26 and the iOS 26 SDK, with Objective-C moved to Swift where it pays off.
- Code audit and upgrade plan
- Deprecated APIs replaced
- Crash and performance fixes
- Back through App Review
FIG 15 · Working with us from the USA and UK
Built in New Delhi. Run on your hours.
Every project gets a point of contact in New York or London and an engineering team in New Delhi. Here is how today’s working days line up, live.
New York
North America
--:--ET
New Delhi team Your working day- Shared working time
- ≈ 3 hours today
- New Delhi is
- 10.5 h ahead
- Live calls, your time
- 9 a.m. to 12 p.m. ET
London
UK & Europe
--:--UK
New Delhi team Your working day- Shared working time
- ≈ 4.5 hours today
- New Delhi is
- 5.5 h ahead
- Live calls, your time
- 9 a.m. to 1:30 p.m. UK
Three ways to work together
- 01
Fixed-scope project
A written scope, one fixed price and a dated plan. Suits websites, apps and MVPs.
- 02
Dedicated team
Designers and engineers on your roadmap every month, billed monthly.
- 03
White label
For US and UK agencies: our work, your brand, unbranded deliverables.
Every engagement
- Fixed quote in USD, GBP or INR after a free 30-minute call
- NDA before discovery. You own all code, designs and content
- A working demo every sprint, not status slides
- Reply within one business day, calls inside your hours
Book a call
Calls on ET or UK hours
FIG 16 · Hire iOS developers
Hire iOS developers: three ways to work with us
Need hands, not a project? You can hire a dedicated iOS developer or a full team that works in your sprints and your tools.
| Fixed-scope project | Dedicated iOS developer | Dedicated team | |
|---|---|---|---|
| Best for | A defined app or release | Adding iOS skills to your own team | A product that needs iOS, backend and design |
| Who manages | We do, against a written scope | You do, in your sprints | We do, with your product owner |
| How it’s priced | A fixed written quote | A monthly rate, agreed in writing | A monthly rate, agreed in writing |
| Ownership | Code and IP assigned to you | Code and IP assigned to you | Code and IP assigned to you |
FIG 17 · Compare
iOS app development company, freelancer or in-house team?
| iOS app development company (Elgrith) | Freelance iOS developer | In-house team | |
|---|---|---|---|
| Best for | Apps that need design, backend and launch in one team | Small, well-defined tasks | Apps at the core of your business, long term |
| Skills | iOS, backend, design, QA and App Store launch | Usually one person’s strengths | Whoever you hire |
| Continuity | A team that stays after launch | Depends on the person | Yours, if they stay |
| Time to start | After a free call and a written scope | Quick, if available | Months of recruiting |
| Ownership | Code, IP and App Store account yours | Check the contract | Yours |
FAQ
Frequently asked questions
Straight answers about iOS App Development with Elgrith.
It depends on the number of screens and features, the backend and integrations, design depth, Apple features such as payments, widgets or Apple Watch, and how many devices you support. After a free call you get a written scope and a fixed quote. Apple’s developer programme fee and any backend hosting are paid directly by you.
FIG 18 · Related
Keep exploring
App Store Optimization
Rank and convert on both app storesApp Development
iOS, Android & cross-platformReact Native App Development
Cross-platform apps in React NativeFlutter App Development
One codebase for iOS & AndroidMobile App Maintenance
OS updates, fixes & monitoringLLM Integration
ChatGPT, Claude & RAG in your productHire Dedicated Developers
Your own full-time remote teamUI/UX Design
Research-led product designApp development, Delhi
iOS, Android & cross-platform apps in Delhi NCR
Free 30-minute call
Ship your iOS app, and keep it shipping.
Tell us about the app you want on iPhone. After a free call you get a written scope, a phased plan and a fixed quote.
Pick a day for your call
OpenPick a day. You'll choose a time in your own time zone on the next step.