Developer Daniel Hayes Smith built ClearTime, a visual timer designed to help with ADHD-related time blindness after a health scare led him to stop stimulant medication. ClearTime uses a solid disc of color that shrinks as time passes so users can glance and feel how much time remains; the same dial and brand mark appear across Mac (floating timer/menu bar), iPhone (widgets, Live Activities, Dynamic Island), Apple Watch (complication/glance), and Apple TV (shared room timer). From first commit to functioning TestFlight builds on all four platforms took about five hours, with roughly 45 minutes of hands-on coding; the apps are native Swift/SwiftUI targets, not wrapped web apps.
The build was driven by a deliberate multi-agent AI workflow: ChatGPT for product definition and constraints, Claude Design for logo, dial geometry-as-code, color tokens, platform reference boards, accessibility, and a build guide that resolved conflicts, and Claude Code (Claude Opus 5.5) to implement the codebase. The team abandoned an initial Tauri/Expo plan in favor of a single Xcode workspace with seven targets and a shared package for the timer engine, used Xcode’s MCP bridge so the agent could edit the project, and gave the coding agent explicit rules to solve routine decisions. TestFlight provided the final verification, and the process produced design assets, a showreel, and receipts documenting the workflow.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.