Notes on building and launching apps.

Expo SDK 58 gets apps ready for Apple’s foldable iPhone Duo and iOS 27 from day one. What changes, what Expo handles for you, and a roundup of everything else in the release.

App Store reviews are taking longer and rejections are more common. Here's the checklist I run through before every submission, and why you should plan review time into your launch.

Apple’s new product page header and search result assets explained: where they appear, the exact specs, the new Asset Library and how to design them well.

Seventeen questions every founder should be able to answer before launching an MVP, covering data, security, API versions, testing, monitoring and support.

Feature creep, over-engineering and no clear definition of done: the three most common reasons MVPs never launch, and how to avoid each one.

The most common reasons apps get rejected by Apple, from crashes and subscriptions to privacy and sign-in, with the fix for each before you submit.

Apple’s new “Monthly with 12-Month Commitment” subscription explained: how it works, where it’s available, and how I’d price it for your app.

How a bedtime maths routine with my seven-year-old turned into Numberville, an App Store game we built together, and what she taught me along the way.

New apps on the App Store have roughly tripled while downloads stay flat. What that means for your launch, and six things that still work for getting seen.