Founder notes and engineering write-ups from building native Apple apps — private by default, no servers I control.
The AI features I'd been deferring are in 4.0 — built on Apple Intelligence so client data never leaves the Apple ecosystem.
Smart Dentist, Smart Billing and Smart Coach keep your place when you open or close iPhone Duo. What changed, what we dropped, and what we learned.
Five years of single-doctor assumptions, replaced in one release.
A private Business Assistant, a Liquid Glass redesign, and the bug fixes that mattered most.
Ask Anything is back in Smart Budget 2.0 — just not on the on-device model I said I was waiting for.
Two numbers — 120 hitches per minute and 5 — explain everything about what Liquid Glass actually costs and where that cost lives.
Resizable iPhone windows silently invalidate every UIDevice idiom check used for layout — the same break, four codebases, one size-class fix.
Two iCloud accounts, one shared budget, no backend I control. NSPersistentCloudKitContainer couldn't do it, so I built the sync engine by hand. Here's what that actually takes.
The on-device model is real, it's free, and it will lie to you with total confidence. Here's the architecture that survived contact with it.
A budgeting app that never asks for your bank password — because I wasn't willing to hand mine over either.