Hire iPhone App Developers

SwiftUI is the sensible default for new screens: less code, live previews, and first-class support for widgets, watchOS and visionOS. But UIKit has not gone away. Very large or highly customised lists, complex text editing, some camera and media flows, and mature third-party components still sit more comfortably in UIKit, and most apps that have been around for a few years contain plenty of it.

A strong iOS developer is fluent in both and mixes them deliberately - hosting SwiftUI views inside a UIKit app, or wrapping a UIKit view for use in SwiftUI - rather than forcing a rewrite. When you interview, ask when they would drop down to UIKit and why. A thoughtful answer about performance, control or library support is a better signal than loyalty to either framework.

Most rejections come from a familiar list. Apps that offer third-party social sign-in generally need to offer Sign in with Apple as well. Apps that let users create an account must let them delete it from inside the app. Digital goods and subscriptions normally go through in-app purchase, while the rules on linking to outside payment differ by region and have changed repeatedly - so check the current guidelines rather than relying on last year's answer.

Privacy is enforced in several places at once. The app and its third-party SDKs ship privacy manifests that declare the data they collect and the reasons for using certain system APIs. The App Store privacy labels must match what the app actually does. If the app tracks users across other companies' apps or websites - for advertising or data sharing - it has to ask permission through App Tracking Transparency first, and must keep working if the user says no. A developer who audits every SDK you add against these rules saves you a lot of resubmissions.

The simulator is fast but forgiving. Real devices expose memory pressure, slow networks, thermal throttling, camera and Bluetooth behaviour, and layout problems on the smallest supported screens. A sensible test matrix covers your oldest supported iOS version, a small and a large iPhone, and an iPad if you support one, with Dynamic Type, Dark Mode and VoiceOver checked as part of normal testing rather than at the end.

Release engineering matters as much as code. Expect TestFlight builds for internal testers on every meaningful change, with external testing going through a lighter beta review. Crash reporting and phased releases let you spot a bad build early and pause it. Code signing, certificates and provisioning profiles should be documented and automated so a release does not depend on one person's laptop.

Look at apps they have shipped and ask what they would change now. Probe the fundamentals: how they find and fix retain cycles, how they handle data races with Swift concurrency and the main actor, how they structure offline storage and sync, and how they keep a large SwiftUI view fast. Ask them to describe a rejection they dealt with and how they resolved it - real experience with App Review is hard to fake.

Agree on ownership from the first day: the Apple Developer account, App Store Connect access, signing assets and source repository should belong to your organisation. At PixoBots the client owns the code and IP, and we sign an NDA before kickoff.