# Field Notes — Vitor Hugo

> Notes on frontend engineering, Apple/Swift, design systems, and building products — by Vitor Hugo.

## [Coordinating Sibling iOS Apps Without a Network](https://amzvt.com/field-notes/coordinating-sibling-ios-apps-without-a-network)
2026-06-15 · swift, darwin-notifications, iOS, combine, sdk, kernel-ipc

A Swift SDK that turns Darwin notifications into a heartbeat-and-message bus between iOS apps on the same device — no servers, no App Groups, no entitlements.

- Read: https://amzvt.com/field-notes/coordinating-sibling-ios-apps-without-a-network
- Markdown: https://amzvt.com/field-notes/coordinating-sibling-ios-apps-without-a-network/markdown