Native Swift Development
Modern iOS built with SwiftUI and current Apple architecture.
- SwiftUI and UIKit interop
- MVVM and Combine
- Swift concurrency
Mobile Engineering
iOS Apps That Pass Review and Keep Their Rating
App Store review rejects for reasons that are entirely predictable. RASPSYS builds native Swift apps that meet the guidelines first time and hold up after launch.
What We Deliver
What We Deliver With iOS App Development
Most rejections we see are privacy declarations, account deletion, or payment rules — all avoidable at design time rather than resubmission time.
Offline Support
Useful on a plane, in a lift and on a bad connection.
- Core Data and local persistence
- Background sync
- Conflict resolution strategy
Backend & CRM Integration
Connect to Salesforce and your own services securely.
- REST API integration
- OAuth and Keychain storage
- APNs push notifications
Privacy & Security
Apple enforces this, and the rules keep tightening.
- App Tracking Transparency
- Privacy manifest and nutrition labels
- Biometric authentication
Testing
On the devices and OS versions your users are actually running.
- XCTest unit and UI tests
- TestFlight beta distribution
- Performance and memory profiling
App Store Release
Submission, review handling and phased release.
- Listing, screenshots and metadata
- Review guideline compliance
- Phased rollout and hotfix
How We Work
Our iOS App Development Delivery Approach
A structured engagement model that de-risks delivery and gets working output into your team's hands early.
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Define
We agree scope, users and what the first shippable release contains.
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Design
Architecture, navigation and API contracts settled before building.
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Build
Iterative development with review at the end of each slice.
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Verify
Device, performance and accessibility testing before release.
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Release
Store submission, monitoring and post-launch support.
Not Sure Native iOS Is Right?
Most engagements start with a short discovery call. RASPSYS LLP will compare native and cross-platform honestly for your case.
Why RASPSYS
Why Clients Choose RASPSYS LLP for iOS App Development
We deliver for clients across the UK, US, UAE, Canada, and Australia - with teams that work in your time zone.
Review-Ready
We design against the App Store guidelines rather than discovering them at submission.
Global Delivery
Supporting product teams across the UK, US, UAE, Canada and Australia.
Store-Ready
We handle submission, review feedback and the metadata that affects discovery.
FAQs
Frequently Asked Questions
The questions we are asked most often about iOS App Development.
Usually 24-48 hours now, but the timeline that matters is rejection-and-resubmit. The common causes are missing account deletion, incomplete privacy declarations, in-app purchase rules, or insufficient demo credentials for the reviewer. We cover those during the build, so first submission usually passes.
SwiftUI for new work - it is faster to build and is clearly where Apple is investing. UIKit remains necessary for some complex custom interfaces and for supporting older iOS versions. In practice we mix them, since they interoperate cleanly.
Required, and it trips people up. You must declare the data your app and its third-party SDKs collect, and justify certain API usage. Analytics and advertising SDKs are the usual culprits. We audit the dependency list and prepare the declarations as part of release preparation.
Yes, and it should be in your organisation name, not ours or an individual developer. Organisation enrolment needs a D-U-N-S number and takes a little time, so it is worth starting early. We build and submit under your account so you own the listing outright.
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Related Services
Ready to Ship an iOS App That Passes First Time?
Book a free 30-minute call with a RASPSYS consultant.
We will scope the app and flag the review requirements that apply.