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Released Jan 2025

Habit Checker

A four-hour sprint that produced a habit-tracking MVP ready for App Store submission on day one.

Habit Checker

Roles

Product Strategy, iOS Engineering, Interaction Design

Stack

SwiftUI, CoreData, WidgetKit

Period

Jan 2025

Tags

#ios#swiftui#productivity

Visual Archive

Mission Outline

Habit Checker was born from a constraint: build a habit tracker in a single afternoon that still felt tactile, personal, and intelligent. The MVP leans into glanceable widgets, streak forecasting, and haptic micro-feedback to keep daily routines on track.

Operational Highlights

  • Personalized feedback loops powered by lightweight on-device ML for streak prediction.
  • Calendar heatmaps rendered with Metal shaders for butter-smooth performance.
  • Offline-first syncing pipeline using CloudKit zones with conflict resolution heuristics.

Learnings

Shipping quickly forced aggressive scope triage and a focus on automation. By pre-building data fixtures and snapshot UI tests, we kept iteration velocity high without sacrificing stability. The approach now informs our ongoing weekly release cadence.