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20+ iOS Apps Live on the App Store · 4.6 / 5 Average Store Rating

iOS App Development Company for iPhone and iPad Apps

Senior iOS developers shipping Swift 6, SwiftUI, ARKit, and CoreML for iPhone, iPad, Apple Watch, Apple TV, and Vision Pro. NDA before brief. Source code in your repository from day one. ISO 9001 certified shop with 11+ years of production iOS app development experience.

4.9 / 5from 2,495 reviews
ISO 9001 Certified
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  • 20+

    iOS Apps in Production

  • 11 yrs

    Shipping Since 2015

  • 4.6 / 5

    Average App Store Rating

  • Top 1%

    iOS Developer Vetting Bar

Your Trusted iOS Partner

iOS App Development Built for the App Store and Long After Launch

Native Swift, App Store Ready, Production Discipline

Work with senior iOS developers who have shipped Swift to production for more than a decade. From native iPhone and iPad apps to Apple Watch companions, SwiftUI migrations, ARKit and CoreML experiences, Apple TV and Vision Pro apps, we build iOS that passes App Store review the first time and stays maintainable after every iOS release.

How Much Does iOS App Development Cost?

Honest USD Rate Bands From an Indian Senior Team

Most iPhone MVPs we ship come in between $10K and $20K. Stretch it across iPhone, iPad, and Watch and you are looking at $25K to $60K. Enterprise iOS builds with MDM and offline sync start near $80K. Prefer a senior iOS developer on your team instead? From $1,800 per month, first week on us.

  • Single iPhone MVP

    A focused iPhone app with one backend, ready for the App Store

    $10Kto $20K

    • iPhone only
    • Single backend
    • App Store ready
  • Most Common

    Universal iOS App

    iPhone, iPad, and Apple Watch from one SwiftUI codebase

    $25Kto $60K

    • iPhone + iPad + Watch
    • SwiftUI universal
    • Apple Pay + biometric

  • Enterprise iOS Platform

    Multi-tenant, MDM, offline sync, deeper integrations

    $80Kand up

    • MDM managed
    • Multi-tenant data
    • Offline sync

  • Dedicated iOS Developer

    A senior developer on your team, monthly rolling

    $1,800per month

    • Senior, vetted
    • Monthly rolling
    • 7-day trial
What We Build

What can we build with iOS?

Six categories of iOS app development work, from greenfield SwiftUI apps to visionOS spatial experiences.

Reference Architecture

Which architecture do we use for iOS development?

Six layers we wire together on greenfield iOS app development projects. Each layer is testable, replaceable, and accessible by default.

App UI

Adaptive layouts for iPhone, iPad, Watch, Vision Pro. Dark mode and accessibility from day one.

State

Predictable state with TCA or @Observable. Unidirectional flow, testable reducers, no hidden mutations.

Data

Local persistence, SQLite via GRDB for throughput. Background sync, conflict resolution, offline first.

Network

Typed clients with Codable. Retry, backoff, offline queue. GraphQL via Apollo iOS where it fits.

Security

Secrets in Keychain, biometric unlock, end-to-end encryption with CryptoKit. ATS strict by default.

CI / Release

Every PR runs unit and UI tests on devices. Fastlane lanes for TestFlight and App Store. Crashlytics on release.

Every layer documented in your repository on day one

Delivery Process

How does our iOS development process work?

From brief to App Store launch with predictable cadence and audit-friendly deliverables.

  1. Day 0 to 5

    Discovery and UX Audit

  2. Day 6 to 10

    SOW and Onboarding

  3. Sprint 0

    Scaffold and CI/CD

  4. Every Sprint

    Two-Week Sprints

  5. Milestone

    App Store Submission

  6. Post-Launch

    Run and Maintain

7-day No-Risk Trial

The first week is on us

Start with a brief
Engagement Models

What engagement models do you offer for iOS development?

Transparent USD rate bands, rolling monthly cancel, no setup fees, no markup.

  • Hourly

    Pay only for hours used

    $20/hour

    Tracked weekly, billed monthly

    • App Store review fixes
    • Crash and performance audits
    • Short surge work
    • No minimum commitment
    • Mutual NDA before brief
    Start Hourly
  • Most Popular

    Dedicated

    Senior iOS developer, full-time on your product

    $1,800/month

    Monthly rolling, cancel anytime

    • One developer, only you
    • Embedded in your sprint
    • Reports to your stakeholders
    • 7-day no-risk trial
    • 48-hour replacement guarantee
    Get a Shortlist

  • Staff Aug

    Plug into your existing iOS team

    $2,000/month

    Per-developer monthly

    • Joins your standups
    • Your sprint, your tools
    • Your codebase, your repo
    • Scale up or down monthly
    • 48-hour replacement
    Augment Team

  • Fixed Scope

    Locked deliverables and timeline

    $10,000+ project

    Per-milestone payments

    • Best for MVPs and pilots
    • Locked scope upfront
    • Locked timeline
    • TestFlight demo acceptance
    • No surprise change orders
    Get a Quote
Production Work

What have we built with iOS?

Four real iOS apps from the Decipher Zone portfolio, live on the App Store.

Frequently Asked

iOS App Development FAQs Product Leaders Ask Up Front

Pricing, code ownership, App Store review, native vs cross-platform iOS app development, answered straight.

  • How much does iOS app development cost?

    Most iPhone MVPs we ship run $10K to $20K. Universal apps that target iPhone, iPad, and Apple Watch usually fall between $25K and $60K. Enterprise iOS platforms with MDM, multi-tenant data, offline sync, and deeper integrations start near $80K. Or hire a senior iOS developer monthly from $1,800, first week on us.

  • How long does it take to build an iOS app?

    A well-scoped iPhone MVP ships to TestFlight in 6 to 10 weeks and to the App Store in 10 to 14 weeks including review. Universal iPhone, iPad, and Apple Watch builds take 14 to 20 weeks. Enterprise platforms with custom integrations run 5 to 9 months. TestFlight build at the end of every two-week sprint.

  • Do you build native iOS or cross-platform with Flutter and React Native?

    Both. Native Swift and SwiftUI when you need deep iOS integration, AR, ML, or complex animations. Flutter or React Native when one codebase across iOS and Android serves your roadmap better. We help you decide on the free design review.

  • Will you sign an NDA before I share my idea?

    Yes. Mutual NDA before any technical discussion. We can use our template or sign yours. Typically turned around within 24 hours. You can talk to a senior iOS developer the same day.

  • Will I own the source code and the Apple Developer account?

    Yes. Your GitHub, GitLab, or Bitbucket org owns the repository from day one. Our developers push commits as named contributors. You retain the Apple Developer account, certificates, and provisioning profiles. Full IP transfer in every SOW.

  • Do you submit the app to the App Store for us?

    Yes. App Store Connect setup, screenshots, App Privacy nutrition label, age rating, export compliance, review notes, and the back and forth with App Review are all handled by us. We have shipped 20+ iOS apps through Apple review.

  • Can your iOS developers work in my time zone?

    Yes. Time zone overlap with US Eastern, US Pacific, UK, EU, UAE, and Australian timezones. Dedicated developers shift their hours to match yours on long engagements.

  • What is the 7-day trial on dedicated engagements?

    Hire a dedicated senior iOS developer from $1,800 per month and the first 7 days are on us. If the developer is not a fit, we replace within 48 hours at no charge. Monthly rolling, cancel anytime.

  • Do you offer post-launch support and maintenance?

    Yes. Optional retainer after launch. Same team, same SLA. Crashlytics or MetricKit dashboards, weekly status, quarterly iOS version updates, App Store policy compliance reviews. 95 percent of clients extend past 12 months.

  • Why should I hire Decipher Zone instead of a larger agency?

    Senior developers only, no bait and switch. NDA in 24 hours. Code in your repository from day one. 7-day no-risk trial. ISO 9001 process discipline. Direct senior developer access, no project manager filter. Transparent monthly pricing. 11+ years shipping iOS in production.

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Free iOS Design Review · Reply in 1 Business Day

Ready to Ship iOS App Development that Passes Review?

Send a brief. A senior iOS developer reads it personally and replies within one business day with a free design and architecture review. No sales call, no pitch deck.

Get a Free iOS Design Reviewinfo@decipherzone.com
  • Reply within 1 business day
  • Free design and architecture review
  • Mutual NDA before brief