Circadian Rhythm & Sleep vs Stack

You are not lazy at 3pm. You are running on a clock nobody showed you. ARC works out the shape of your day — when your energy peaks, when it drops, and when a coffee stops being a good idea — then plans around it. Not a generic routine. Yours, built from what you actually log. ONE ANSWER, NOT A DASHBOARD Open the app and there is one sentence explaining why you feel like this right now, and one thing worth doing about it. Underneath, the rest of your day as a plan you can work through. Nothing else competes for your attention. The plan is not a schedule. Log a walk and its block closes. Miss your morning light and a compensatory walk appears that was not there at breakfast. Report a low before the app expected one and the whole afternoon re-times. YOUR LAST SAFE COFFEE, ACTUALLY CALCULATED Most apps give you a rule of thumb. ARC solves for the latest moment a drink your size still clears your system before bed — from your bedtime, how fast you personally metabolise caffeine, and everything you have already had today. Two people with the same bedtime and the same cup can get cutoffs three hours apart. That is not a bug. That is the point. IT CHANGES ITS MIND ABOUT YOU You tell ARC when you crash. After about ten days of check-ins it stops taking your word for it and uses the hour you actually crash — and it tells you when the two turn out to differ. Everything timed around your dip moves with it. PROOF, NOT PROMISES The Trends tab is the receipt for everything the app has told you: your crashes per week, whether the number is falling, when your dip really lands, and what each habit changed. Every claim is built from your own check-ins and each one knows whether it has enough history to mean anything. When it does not, it says so instead of drawing a line through three points. ONE CHANGE, FIVE DAYS Every so often ARC proposes a single experiment — an earlier cutoff, light before nine, a walk before your dip — runs it for five days, and scores it against the fortnight before. "No difference" is one of the possible verdicts, and it is a real result: it takes something off your list for good. LEARN 23 briefings on light, caffeine, sleep and timing, in English and German. A reference you go to, not a feed pushed at you. WHAT IT DOES NOT DO No sleep score. No streaks. No badges. No congratulating you. The app will tell you that you slept badly; it will never tell you that you are doing badly. No account. No login. No wearable required. Your history lives on your phone. REQUIRES iPhone. Notifications are optional. Location is never requested — sunrise comes from your time zone. ARC is a wellness app. It is not a medical device and does not diagnose, treat or prevent anything. SUBSCRIPTION ARC Pro unlocks the full app after setup: the daily plan, the caffeine cutoff, Trends, the weekly experiments and Learn. • ARC Pro – Weekly: $4.99 per week • ARC Pro – Annual: $39.99 per year with 7 days free trial Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours of the end of the current period. You can manage or cancel your subscription in your Apple Account settings, or from Settings inside the app. Any unused portion of a free trial is forfeited when you buy a subscription. Privacy Policy: https://arcapp.sbs/privacy Terms of Use: https://arcapp.sbs/terms

Stack is the all-in-one tracker for peptides, GLP-1 medications, and TRT protocols. Log every injection, set your own schedule, track your progress, and keep your full history organized in one private place. Built for adults working with a prescribing healthcare provider, Stack replaces scattered notes and spreadsheets with a simple, consistent system you control. You enter your own values (peptide name, dose, schedule, and sites) and Stack keeps them organized, reminds you, and shows your progress over time. FEATURES • Custom Protocols & Stacks — Build your own multi-peptide protocols with flexible schedules (daily, weekly, every X days, or custom). Run multiple stacks at once, each clearly organized. • Smart Dose Logging — Log every injection in seconds and see what's due today on your Home screen and calendar. A daily streak keeps you consistent. • Vial & Refill Tracking — Set how much each vial holds, watch it deplete with every dose, and refill in one tap. A tap-to-flip ring shows the exact percentage remaining. • Injection Site Tracker — Rotate sites with an interactive body map that remembers your recent spots, so you can avoid reusing the same area. • Apple Health Sync — Pull in weight, BMI, resting heart rate, HRV, sleep, steps, active energy, blood pressure, respiratory rate, body fat, lean mass, and VO2 max to see the full picture. • Progress Photos & Compare — Capture progress photos and view them side by side with weight and date overlays. Hide weight for privacy, then share a branded comparison. • Meal Scan — Snap a photo of your meal to estimate macros and keep nutrition alongside your protocol. • AI Assistant — Ask questions about your active stacks and protocols in a private chat built into the app. • Metrics & Insights — Clean charts and stats show how your protocol is trending over time. • Home Screen Widget — See your next dose and stay on track without opening the app. • Shareable Protocol Card — Generate a clean, branded card of your active protocol to save or share. PRICING Stack requires a subscription to unlock the full experience. IMPORTANT Stack is a personal record-keeping and organization tool for informational purposes only. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional care. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or protocol. Terms of Use (EULA): https://www.whatsyourstack.app/terms.html Privacy Policy: https://www.whatsyourstack.app/privacy.html Questions or feedback? Email us at contact@whatsyourstack.app.