2025 – 2026  /  iOS App  /  Derek Hu

Locki

A social productivity app built from scratch — focus sessions made visible, accountable, and worth sharing.

Swift SwiftUI iOS Product Design End-to-End Engineering

Project Overview

Built & shipped,
start to finish.

Locki is a consumer-facing productivity app built entirely from scratch. I owned product design, engineering, and iteration end-to-end — from first wireframe to shipped MVP.

The core idea: make focused work visible. Instead of solo productivity tools that live in a vacuum, Locki adds a social layer — your work sessions become posts, your consistency builds a streak, and your output earns you a spot on the leaderboard.

Timeline 2025 – 2026
Role Product Designer · iOS Engineer · Solo Founder
Platform iOS (Swift, SwiftUI)
Stage Shipped MVP · Actively iterating
Focus Consumer App · Social Productivity · Habit Tracking

Core Features

What's inside.

Focus Session Tracking

Stopwatch-based session timer with start, pause, and end controls. Every session is logged with duration and timestamp, building a personal history of focused work.

Social Posts

Completed sessions auto-generate shareable posts to a social feed. Your grind becomes content — motivating both you and the people watching your consistency.

Streaks

Daily streak system that rewards consistency. Miss a day and the streak resets — a simple mechanic that adds just enough pressure to keep users coming back.

Leaderboards

Weekly and all-time rankings based on total session time. Turns personal productivity into friendly competition — making the effort feel visible and worth celebrating.

Objectives

Why build it.

  • Help users stay consistent with focused work sessions through accountability and habit reinforcement.
  • Make productivity visible and motivating through social reinforcement — sharing sessions removes the isolation from working hard alone.
  • Create a tight feedback loop where finishing a session feels rewarding, not just obligatory.

Outcomes

What shipped.

  • Shipped a functional MVP with session tracking, social posts, streak system, and leaderboard rankings.
  • Developed strong product instincts through rapid iteration and hands-on user testing.
  • Gained end-to-end ownership experience — from product vision through engineering, design, and release.

App Preview

focus session
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active · day 7
feed
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Focus Session · Social Feed · Leaderboard