Project Case Study
Goaly is a mobile-first goal and habit tracking application focused on consistency, progress visualization, and engaging user experience. The app includes flexible scheduling for recurring goals, a custom-built streak engine, analytics dashboards, and social features that allow users to compare progress with friends.
Mobile Full-Stack Application
React Native • Express • MongoDB
Goal scheduling, streak logic, analytics
iOS / Android via Expo
Daily, weekly, and monthly recurring goals
Custom streak tracking system
Weekly progress tracker
30-day completion analytics chart
Dynamic home dashboard with motivational messaging
Friends system with requests and profile viewing
Searchable user directory with pagination
Custom theme engine with 11+ themes
Animated slide-up sheet UI system
Challenge
Streak systems can easily produce incorrect results if daily completion states are calculated incorrectly or evaluated multiple times per day.
Solution
Created a streak engine that evaluates 'live' goals per date using helper logic like isLiveForDate(), ensuring streak updates occur only when all daily goals are completed.
Challenge
Users may want goals that repeat daily, weekly, or monthly with optional active days, which introduces complex scheduling logic.
Solution
Built scheduling utilities that dynamically calculate next-due dates and filter goals based on recurrence rules and active days.
Challenge
As features expanded (goals, streaks, friends, themes, analytics), placing logic directly in screens would have caused maintainability issues.
Solution
Split the application into modular context providers and reusable components so business logic, UI state, and data fetching remain separated.
