Mobile app development for iPhone and Android
We design and build iPhone and Android apps from one codebase and take them all the way through the App Store, Google Play and the support inbox. Our own apps, the Pack, are built exactly this way.
One codebase, two stores
We build with .NET MAUI, so one codebase runs on iOS and Android. Features ship to both at once and there's one thing to maintain, and the app still feels at home on each phone.
Built to work without a signal
Bars, gyms and job sites have bad Wi-Fi. We design offline-first: the app keeps working, saves what you do, and syncs when the connection comes back.
Through the store and beyond
Store listings, screenshots, the privacy policy and support pages, review submissions and the questions reviewers ask. We set it all up and stay for the updates after launch.
Moving an older app forward
Microsoft ended support for Xamarin in May 2024. If your app is built on it, we can move it to .NET MAUI in stages, so it keeps shipping while it modernizes.
Questions
Do you build for both iPhone and Android?
Yes, from one codebase, with a web version where it fits.
Can you take over or modernize an existing app?
Yes. We start by reviewing the code and the store accounts, then plan the work in stages with a tested way back at each step.
Who owns the code?
McCallon Technologies keeps ownership of the code it writes, and your app can be published under your own developer account. Websites are the exception: when you buy a website from us, it's yours, code included.
Can I see apps you've built?
Yes. Bracket Dawg and Dart Dawg are ours, built the same way we'd build yours.