Native macOS App Development with SwiftUI & AppKit

MishoraStudio builds native Mac apps and menu-bar utilities — the same craft that went into shipping ShiftOS, applied to your product.

Most of what feels wrong about a bad Mac app comes down to one thing: it wasn’t built for the Mac. A window that doesn’t resize correctly, a menu that doesn’t match the rest of the system, a UI that clearly started life as a web page. In our production work on ShiftOS, the opposite approach — building the menu bar experience first, native, from the start — is what makes an app feel like it belongs on the platform instead of visiting it.

If you’re comparing a macOS app developer for hire against building it in-house, here’s the honest version: native macOS app development is a narrow specialty, and a Swift macOS developer who has actually shipped a Mac app will get you to a working, notarized build faster than someone learning AppKit’s edge cases on your project. That holds whether you need someone to build a macOS app from a blank canvas or take over native Mac app development on something that already exists.

What We Build

Menu Bar Utilities

SwiftUIAppKitCore Animation
Small, always-available tools that live in the menu bar instead of demanding a dock icon and a full window — ShiftOS's own category.

Productivity & Workflow Apps

SwiftUICore DataCloudKit
Mac-native apps that sync with an iPhone/iPad companion where the product genuinely benefits from it.

Developer Tools

SwiftUIAppKitCombine
Utilities built for a technical audience, where a fast, native interface matters more than a wrapped Electron shell.

Cross-Device Apple Ecosystem Products

SwiftUICloudKitHandoff
One codebase, sensibly shared, across Mac, iPhone and iPad — without pretending the three platforms behave identically.

How a macOS Project Runs

1

Scope & Architecture

Deciding upfront how much is SwiftUI and how much needs AppKit, based on exactly what the app has to do — not a default answer.
2

Weekly Builds

A real, installable build every week, so you're reacting to the actual app instead of a description of it.
3

Testing

Manual testing across the Mac hardware and macOS versions that matter for the product, plus automated tests for the logic worth protecting.
4

Notarized Release

Code signing, notarization and a distributable build — direct or through the App Store, depending on what the product needs.
5

After Launch

macOS ships a major update every year; a shipped Mac app needs the same predictable maintenance rhythm ShiftOS itself gets.

macOS Technology Stack

SwiftUIAppKitSwiftCombineCore DataCloudKitCore AnimationNotarizationApp SandboxXcode

Frequently Asked Questions

SwiftUI or AppKit for a Mac app?

SwiftUI for most of the interface — it is faster to build and easier to keep in sync with iOS/iPadOS code if the product spans platforms. AppKit still comes in for macOS-specific behavior SwiftUI does not fully expose yet, like certain menu bar and window management details.

Can you build menu bar apps?

Yes — ShiftOS itself is a menu-bar-first macOS utility, so this is direct, first-hand experience, not a first attempt.

Do you handle notarization?

Yes. Notarization, code signing and Gatekeeper compliance are part of shipping a Mac app outside the App Store, and are handled as a normal part of the release process.

Can you build native macOS features into an existing product?

Yes — adding a real Mac app (or a proper menu-bar companion) to a product that currently only exists on the web or on iOS is a common, well-scoped engagement.

How much does a Mac app cost?

Scoped per project — a small menu bar utility and a full productivity app with CloudKit sync are different builds, quoted as a fixed estimate once the scope is clear.

Mac App Store or direct distribution — which is better?

Depends on the product. The App Store gives discovery and a sandboxed trust model; direct distribution (Developer ID + notarization) allows capabilities the sandbox restricts. ShiftOS itself ships through both — the right answer is chosen per app, not defaulted.

Do you build apps that run in the background / menu bar only?

Yes — that is ShiftOS’s own category, and a common request. A menu bar utility with no dock icon or main window is a deliberate, well-supported app shape here, not an edge case.

Can a Mac app share code with an iPhone/iPad version?

Yes, where it makes sense — shared SwiftUI and business logic across platforms, with per-platform UI adaptation rather than one interface stretched across all three, which reliably feels wrong on at least one of them.

What does notarization actually involve, and do I need it?

Apple’s automated malware scan for anything distributed outside the Mac App Store — required for Gatekeeper to let it launch without a warning. Handled as part of any direct-distribution release.

Do you build System Extensions or need special entitlements?

Where the product genuinely requires it — most apps do not, and reaching for elevated entitlements without a real need is both a security liability and a harder App Review path when it applies.

Can you add a Mac companion app to an existing iOS product?

Yes — sharing the data model and backend with the existing iOS app while building a genuinely Mac-native interface on top, not a resized iPad layout running under Mac Catalyst by default.

Have a Mac App in Mind?

Describe the Mac app you have in mind. You'll get a straight answer on what it takes to build it properly in SwiftUI and AppKit, including whether the Mac App Store or direct distribution suits it better.
Start Your ProjectSee ShiftOS