Hevy Clone

Build a polished native iOS clone of Hevy, the gym workout tracker, in SwiftUI: a Home feed of workouts, a Workout tab with Quick Start and routines, a live "Log Workout" set logger with previous-set history, a rest timer and live PR detection, an exercise library with muscle charts, and a Profile with progress charts.

It is Hevy on screen, in its light theme: its name, Hevy blue #1C83EB on white with #F2F3F6 grey fills, and its own words ("Quick Start", "Start Empty Workout", "Routines", "New Routine", "Explore", "My Routines", "Start Routine", "Log Workout", "Finish", "Add notes here...", "Rest Timer: 2min 30s", "Add Set", "Add Exercise", "Discard Workout", "Save Workout", "Heaviest Weight", "One Rep Max", "Best Set Volume", "Dashboard"). Draw the Hevy mark (two brackets joined by an S curve, white on black) in SwiftUI. Metric units (kg). The user is Alex Rivera (@alexrivera); friends are fictional (maya.lifts, jordan_k, coach.priya, ben.squats, tasha_trains) with initials avatars.

SHELL
A flat white tab bar (outline icon over label, blue when selected): Home, Workout, Profile. Opens on Home: no splash, onboarding, login, paywall or permission prompt. While a workout is minimized, a "Workout in progress · Push Day · 24min" bar with a blue Resume button sits above the tab bar.

SCREENS
1. Home: the Hevy mark + "Hevy", search and bell. A "12 week streak / 4h 14min trained this week" banner with a blue Train button. Feed cards on light grey: avatar, username, "Today, 7:00 AM", "..."; bold title ("Heavy Squat Day"); Time / Volume / Sets (or Records with a gold medal); "Workout" list of "5 sets Squat (Barbell)" rows with round exercise thumbnails, "See 1 more exercise"; liker avatars + "3 likes", "0 comments"; thumbs-up (fills blue and bounces), comment, share. Tapping a card opens Workout Detail: stats, a front/back muscle map of the session, every set with PR medals, comments and a comment box; your own workouts can be saved as a routine or deleted.
2. Workout: Quick Start "+ Start Empty Workout"; Routines "New Routine" and "Explore"; collapsible "My Routines (4)": Push Day, Pull Day, Leg Day, Upper Body cards with grey exercise names, a "..." menu (edit, duplicate, delete) and a blue "Start Routine" button. Explore lists Beginner / Strength / At Home programs (Full Body A/B, 5x5 Strength A/B, Dumbbell Only Full Body, Glute Focus) with Save Routine. The routine editor sets title, exercises, sets, kg and reps.
3. Log Workout (full screen): chevron-down (minimize), stopwatch, "Log Workout", blue Finish. Duration (live, blue) / Volume / Sets and a mini front/back muscle map. Each exercise: thumbnail + blue name, "..." (remove), "Add notes here...", "Rest Timer: 2min 30s" menu, a table SET | PREVIOUS | KG | REPS | check. W (amber) warm-up rows, D drop, F failure (tap the set number to change). PREVIOUS shows last session's "90 kg x 8"; tap it to copy. Ticking a set turns the row light green (#C9F6AE) with a green check, fills empty fields from last time, adds its volume, and starts the rest timer: a bottom card with a blue progress bar, -15, a big 2:30 countdown, +15 and Skip. Beating your heaviest weight or best 1RM swaps the set number for a gold medal and drops a "PR / Bench Press (Barbell) / Heaviest Weight - 92.5 kg" banner. "+ Add Set", blue "+ Add Exercise" (multi-select picker with search, All Equipment / All Muscles filters, Recent and All Exercises), Minimize and red Discard Workout.
4. Save Workout: editable title, Duration / Volume / Sets, When, add photo, description, Visibility. Save posts it to the top of Home and shows "Well done! This is your 45th workout" with a bouncing gold trophy and a summary.
5. Exercise: tabs Summary / History / How to. Front and back body charts with the primary muscle red and secondary muscles light red, Primary / Secondary, "90 kg Nov 2", a line chart with chips Heaviest Weight / One Rep Max / Best Set Volume / Session Volume, and Personal Records. History lists every session's sets; How to has numbered steps.
6. Profile: "Edit Profile", username, share, settings. Avatar, Alex Rivera, Workouts / Followers / Following, "4h 14min this week" over a 12-week bar chart (this week lighter) with Duration / Volume / Reps chips; Dashboard tiles Statistics (muscle heatmap + sets per muscle), Exercises (library), Measures (body weight chart, history, add a weigh-in), Calendar (months with workout days in blue circles and the week streak); then your workouts.

LOOK
SF Pro, bold 20-24 pt titles, grey 13 pt labels over 16 pt values, hairline separators, blue text buttons and filled blue CTAs with 8 pt corners. Exercise thumbnails are round crops of a body chart drawn in code (SVG-style paths) with the worked muscle in red. Springy check, PR banner and trophy animations.

RULES
Only completed sets count toward volume, sets and records. A PR beats your heaviest weight or best Epley 1RM for that exercise. Seed 12 weeks of history from the four routines (Mon Push, Tue Pull, Thu Legs, Sat Upper, about 1.2% stronger a week, a few skipped days) plus friends' sessions from the last 4 days, all relative to today, and slide demo dates forward on every launch so the data never looks stale. Save everything locally.

REMIX-READY
A Brand file (name, colours, units, words), a Fixtures file (people, routines, schedule, Explore programs), an ExerciseLibrary file, features in small files under 300 lines, a README with a file map, and launch arguments -DemoTour YES / -DemoScreen <name> / -ResetDemo YES.