SumIt is a native Apple-platform counting app I built with SwiftUI. People can create standalone counters or organize them into groups for habits, goals, or everyday totals. Each counter supports custom amounts, notes, detailed history, summaries, streaks, rankings, plus configurable charts. Shared counters or groups let friends track progress together. Core Data with CloudKit powers local persistence, iCloud sync, plus collaboration. Notifications, deep links, Home Screen widgets with quick-add actions, plus a companion Apple Watch app extend the experience across Apple devices.