Writing

Notes from building mobile products

Notes on building mobile products end to end: architecture, offline-first sync and shipping to the stores.

• 25 September 2026·5 min read

  Native, Kotlin Multiplatform or React Native: how I'd choose

  How I choose between native, Kotlin Multiplatform and React Native: features first, then the trade-offs. With what I learned rewriting Pulse.

  • kotlin-multiplatform
  • react-native
  • android
  • ios

• 24 September 2026·6 min read

  Offline-first with a server: lessons from Pulse's sync engine

  Offline-first architecture lessons from Pulse's Android and iOS sync engine: temporary IDs, upload order, conflicts and visible sync status.

  • offline-first
  • sync
  • android
  • ios

• 24 September 2026·4 min read

  Offline-first with no server: why HelperBook is local-only

  Offline-first Android architecture with no server: why HelperBook, a household payroll app, keeps all its data on the phone, and what that costs.

  • offline-first
  • kotlin-multiplatform
  • privacy
  • android