Alex Nguyen

Alex Nguyen

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Alex Nguyen

@alexcooldev

Feb 23

Build a mobile app called “Workout Log & Planner”. Goal - Help users plan workouts, follow a routine, and log sets/reps/weight quickly. - UX must be super fast for logging (1–2 taps to add set, swipe to complete). - Offline-first with local storage Platforms - iOS (SwiftUI). Core Screens 1) Onboarding - Ask: goal (strength / hypertrophy / fat loss), experience (beginner/intermediate/advanced), days per week, available equipment (gym/home/dumbbells/barbell). - Generate a starter plan (can be simple templates). 2) Home (Today) - Shows today’s workout from the plan. - Button: “Start Workout”. - Quick summary: last workout stats, streak, total volume this week. 3) Planner - Calendar / week view of scheduled workouts. - Create/edit a routine: - Routine → Weeks (optional) → Days → Exercises - Day template contains exercises with target sets/reps/RPE/rest time. - Support: copy day, reorder exercises, deload week toggle. 4) Workout Session (Live Logging) - When user taps “Start Workout”, open a session screen: - List exercises (collapsible). - Each exercise has sets table: set #, reps, weight, RPE, checkbox “done”. - Big “ Add Set” button. - Auto-suggest last used weight/reps from previous sessions. - Timer for rest (start when a set marked done). - Notes per exercise notes per session. - “Finish Workout” → saves to history. 5) Exercise Library - Browse exercises by muscle group, equipment. - Create custom exercise. - Each exercise has default unit (kg/lb), and history chart: best set, volume, 1RM estimate (Epley optional). 6) History - List past workouts with search and filters. - Workout detail: exercises, sets, volume, PRs, duration. 7) Progress / Analytics - Simple charts: - Weekly volume by muscle group - Estimated 1RM trend (by selected lift) - Consistency (workouts/week) - PR detection (heaviest weight, best reps at weight, best estimated 1RM). 8) Settings - Units: kg/lb - Rest timer defaults - Data export: CSV/JSON - Optional cloud sync login (email OTP) if Supabase enabled. Data Model (must implement) - User { id, name, unitPreference, createdAt } - Exercise { id, name, muscleGroup, equipment, isCustom } - Routine { id, name, createdAt } - RoutineDay { id, routineId, dayIndex, title } - PlannedExercise { id, routineDayId, exerciseId, targetSets, targetRepsRange, targetRpe, restSec, order } - WorkoutSession { id, userId, startedAt, endedAt, routineId?, notes, totalVolume } - WorkoutExercise { id, sessionId, exerciseId, order, notes } - SetEntry { id, workoutExerciseId, setNumber, reps, weight, rpe, isWarmup, isCompleted, createdAt } Key Behaviors - “Start Workout” copies PlannedExercise into a new WorkoutSession. - Auto-fill based on last session for the same exercise. - Compute totalVolume = sum(reps * weight) across completed sets. - PR logic: - If weight is highest ever for exercise → PR badge. - If estimated 1RM highest ever → PR badge. UI/UX Requirements - Modern minimal design, dark mode support. - Fast logging: large touch targets, sticky bottom action bar. - Swipe gestures: - Swipe set row to delete - Swipe exercise to reorder in session - Haptics for set completion. - Loading states and empty states. Seed Data - Include a default exercise library: Bench Press, Squat, Deadlift, Overhead Press, Pull-up, Row, Lat Pulldown, Curl, Tricep Pushdown, Leg Press, Leg Curl, Calf Raise.

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