ThinkBud + Foundation Models: What I Shipped On-Device, and the Wall That Sent Me Back to the Server
Day 10 of the 30-day iOS series, the build-in-public finale of AI week. I took the on-device Foundation Models stack from Days 8 and 9 and bolted it into ThinkBud, an app I actually ship. Here's the honest field report: the bounded tasks the on-device model nailed for free and offline, the context-window wall a 100K-character textbook import smashed into, and the exact line of code where I gave up and routed to a server. Plus the one decision that's pure Swift — so it gets a real test.
@Generable: Make Apple's On-Device Model Hand You a Swift Struct, Not a String to Parse
Day 9 of the 30-day iOS series, part 2 of AI week. Yesterday Foundation Models gave us a String. Today we make it give us a typed Swift value — BrewSummary(flavor:, advice:, rating:) instead of a paragraph you regex your way through. @Generable, @Guide constraints, session.respond(to:generating:), and the sleeper-within-the-sleeper: tool calling, where the on-device model calls your own Swift code mid-answer. With the TDD seam, because typed output changes what you test.
Foundation Models: Your First On-Device AI Feature With No Backend, No API Key, No Bill
Day 8 of the 30-day iOS series, and the start of AI week. The Foundation Models framework runs a real language model entirely on the phone — free, private, offline. We build the smallest thing that works: summarize a block of text in three lines, handle the availability cases that bite in production, wire it into a real app, and put a TDD seam around the part that isn't the model. Code-along, with tests.
Google's AI Is About to Run on Every iPhone. Apple Thinks That's a Feature, Not a Bug.
Apple is training distilled versions of Google's Gemini to run directly on iPhones. For iOS developers, this means your Foundation Models code might soon be powered by Google under the hood — and WWDC 2026 will make it official. Here's what changed, why it matters, and what to build before June 8.
Apple Put a 3-Billion Parameter Brain Inside Every iPhone. Most Developers Haven't Even Noticed.
Apple's Foundation Models framework lets you run AI on-device with 3 lines of Swift. No API keys. No cloud bills. No privacy headaches. Here's why iOS developers should stop ignoring the smartest thing Apple shipped in years.
Apple Stopped Pretending It Could Build AI Alone. That's the Best WWDC News in Years.
WWDC 2026 is two months away. Apple is opening Siri to Claude, Gemini, and Grok. Xcode already has agentic coding. iOS 27 is a stability year. Here's what iOS developers actually need to care about.