Arc: Health & Fitness Tracker

Train smarter. Recover better. Lift with your crew. Arc is the all-in-one health and training app built for people who take it seriously.

Track every rep, meal, and night of sleep in one beautifully simple app — then train alongside your crew in real time.

FOOD & NUTRITION Snap a photo of any meal and AI instantly estimates your calories, macros, and caffeine. Or just type what you ate for the same one-tap analysis. Arc tracks daily protein, carbs, fats, calories, and caffeine against your personal goals and sends smart meal-time reminders so nothing gets missed.

WORKOUT TRACKING Log strength sessions set by set, or let Apple Health automatically import workouts from your Apple Watch. Build multi-week training blocks with a rotating workout schedule — your plan auto-fills each day so you always know exactly what to do. Track personal records, lift maxes, and volume streaks over time. One tap shares an entire training plan with your crew.

GYM BOARD Pull up the Gym Board on any TV or browser and watch your crew's session come alive. Member cards update in real time with every set logged, rest timers, recovery scores, and weight-up announcements. When someone hits a PR, the whole board reacts. A live chat feed lets the crew talk trash and hype each other up — messages float up the screen like a live stream. The board needs no login and works on any device with a browser.

DAILY READINESS BRIEF Every morning, Arc generates a personalized AI readiness brief. It reads your HRV trend, sleep quality, training load, nutrition, mood, and recovery data — and gives you a plain-English summary of how prepared your body actually is today, with a 1–10 readiness score and a specific recommendation for what to do with it.

APPLE HEALTH INTEGRATION Arc reads steps, active calories, heart rate, HRV, resting heart rate, sleep stages, and imported workouts — and optionally writes food logs, water intake, weight, workouts, and sleep back to Apple Health so your data stays in sync everywhere you look at it.

SLEEP & RECOVERY Log sleep manually or pull real data from your Apple Watch with Deep, REM, and Core stage breakdowns. The 7-night bar chart makes trends obvious. Recovery Trends charts your HRV and resting heart rate over weeks. Correlation cards reveal how alcohol affects your HRV and how workout frequency moves your resting heart rate — your own data telling your own story.

HEALTH DASHBOARD A fully configurable home screen with tap-to-log widgets for water intake, sleep quality, body weight, mood, alcohol, caffeine, creatine, biohacks, and mindfulness. Add what matters. Remove what doesn't. Log in one tap, every time.

CREW & SOCIAL Create or join a crew, invite friends by text or email, and see each other's daily workout summaries and streaks on the group feed. Tap any day on a crew member's heatmap to see exactly what they trained. Chat in the group feed, compete on the weekly leaderboard, and share training plans with a single invite link. Start a live gym session and the whole crew logs together in real time.

STREAKS & MILESTONES The workout streak tracks three-workout weeks — build your chain and celebrate every milestone at 4, 8, 12, and 26 weeks. The alcohol-free streak works the same way. Credit the weeks you've already put in before you downloaded the app and pick up right where you are.

PROGRESS & ANALYTICS The Progress tab shows your weight trend line, 7-day nutrition breakdown, mood and workout correlation chart, sleep history with stage data, recovery trends, and scatter charts that connect your lifestyle habits to your recovery metrics — all built from your own private data.

PRIVACY FIRST All health data is stored locally on your device. Cloud sync is optional and uses your own private account. No ads. No subscriptions. No selling your data. Ever.