Native iOS work at Redian is built around modern Swift — async/await, actors, structured concurrency — with SwiftUI as the default UI layer and UIKit interop where a screen or control genuinely needs it. We build apps that feel native on iPhone and iPad, respect Apple's Human Interface Guidelines, and pass App Store review the first time because we treat the review checklist as part of engineering, not an afterthought.
What we build
We ship production iOS apps for regulated and enterprise use cases: mobile banking and wallet apps, insurance self-service and claims capture, retail and loyalty apps, field-force and inspection tools, healthcare companions, and internal enterprise apps distributed through Apple Business Manager and MDM.
Typical modules include biometric authentication (Face ID / Touch ID via LocalAuthentication), secure token storage in the Keychain, push notifications through APNs, deep links and universal links, offline-first sync, in-app purchases and subscriptions via StoreKit 2, Apple Pay for checkout and payouts, PassKit wallet passes, MapKit and CoreLocation for field workflows, AVFoundation for document and cheque capture, VisionKit and Core ML for on-device OCR and classification, and WidgetKit / App Intents / Live Activities where they add real value to the user.
For BFSI clients, this connects into the same backends we build for our core banking and BFSI practice engagements — so a mobile banking app isn't a standalone project, it's the customer channel on top of the ledger, KYC, cards and payments stack we already run.
Architecture and engineering
Swift is the default language across the codebase — Objective-C only appears when we're integrating a legacy SDK that hasn't been modernised. SwiftUI is the default UI framework, with UIKit hosted through UIViewRepresentable / UIViewControllerRepresentable for cases like advanced camera pipelines, complex table interactions, or third-party SDKs that still ship UIKit views.
On the concurrency side, we use structured concurrency (async/await, Task, TaskGroup) and actors for shared mutable state rather than dispatch queues and completion handlers. This matters for correctness under Swift 6 strict concurrency and for keeping the main actor unblocked on scrolling and animation.
Architecture is typically MVVM with a coordinator or navigation stack pattern, a repository layer over URLSession / Alamofire, and Combine or AsyncSequence where reactive streams help. State is held in @Observable models (or ObservableObject for older targets). Dependency injection is explicit — we avoid singletons except for genuinely global services.
Persistence is chosen per use case: SwiftData or Core Data for structured local stores, GRDB / SQLite for heavier query workloads, Keychain for secrets, and file-based encrypted caches for larger blobs. For sync, we lean on server-driven change feeds with conflict resolution rules the business actually signs off on, rather than assuming last-write-wins.
Package management is Swift Package Manager first; CocoaPods only where a vendor SDK still requires it. Build settings, entitlements and signing are checked into the repo as XCConfig files so environments are reproducible.
Security, privacy and compliance
For BFSI and healthcare apps this is the part that decides whether the project ships. We implement certificate pinning, jailbreak detection, tamper checks, and secure enclave-backed key storage. Sensitive fields are protected against screenshots and screen recording where the regulator or the security review requires it.
Authentication typically combines device binding, biometric step-up (Face ID / Touch ID with fallback), and OAuth 2.0 / OIDC against the client's IdP. Session handling, token refresh and logout-on-tamper are all designed against the threat model, not copied from a tutorial.
Privacy manifests, required-reason API declarations, App Tracking Transparency prompts, and the privacy nutrition label are prepared alongside the app — not filled in the night before submission. For regulated clients, we align the app's data flows with the applicable regime (RBI and IRDAI in India, FCA in the UK, CBK and IRA in Kenya, NAICOM in Nigeria, HIPAA where US healthcare data is in scope) and document what leaves the device and why.
Testing, CI/CD and release
Unit tests run under XCTest or Swift Testing, UI tests under XCUITest, snapshot tests where visual regressions matter. We measure launch time, hang rate and scroll performance with Instruments and MetricKit, and we wire crash and performance telemetry to Firebase Crashlytics, Sentry, or the client's existing APM.
CI runs on GitHub Actions, Bitrise or Xcode Cloud depending on the client's stack — building on macOS runners, signing with fastlane match, running the test suite, and shipping builds to TestFlight for internal and external testers. Release notes, staged rollouts and phased release on the App Store are managed alongside product; enterprise distribution through Apple Business Manager and MDM (Jamf, Intune, Kandji) is handled the same way when the app isn't public.
Localization, Dynamic Type, VoiceOver, and Right-to-Left support are treated as first-class — Arabic, Swahili, French and Hindi builds behave the same as English ones.
Why Redian
We do iOS as part of a full-stack engagement, not as a body-shop skill. The same team that ships your app also runs the backend — often on top of our CRM & ERP implementation work with Zoho, Odoo or Salesforce, or on custom BFSI cores. When product decisions need someone who understands both the App Store and the ledger, we already have that person.
For clients who want to extend an in-house team rather than outsource the whole build, we offer senior iOS engineers through IT staff augmentation with direct engagement, timezone overlap and code-review discipline. Selected shipped work is documented in /case-studies, and specific engagements can be walked through under NDA — get in touch to scope yours.
