Oleksii Mykhalchuk — WritingNotes from building software for things that touch the physical world — devices, equipment, protocols, and the seams between hardware and software.https://oleksi.dev/enYour app can run AI on the phone now. Here's what that does to the bill.https://oleksi.dev/writing/on-device-ai-ios-android/https://oleksi.dev/writing/on-device-ai-ios-android/Since iOS 26 on iPhone and Gemini Nano on Android, an app can run a language model on the user's own phone with no per-request API cost — but only on recent flagship devices, so most apps still need a cloud fallback.Wed, 07 Oct 2026 00:00:00 GMTiOSAndroidOn-device AIoleksii@oleksi.devApple shipped a foldable. Your app has six weeks.https://oleksi.dev/writing/iphone-duo-what-it-means-for-your-app/https://oleksi.dev/writing/iphone-duo-what-it-means-for-your-app/The iPhone Duo opens to 7.6 inches and reaches customers on 23 October. If your app assumed one screen that never changes shape, that assumption now has a delivery date attached.Fri, 11 Sep 2026 00:00:00 GMTiOSFoldablesApp maintenanceoleksii@oleksi.dev