What's new: • Live caffeine forecast on Home — watch your levels decay over the next 12 hours, with a clear sleep-safe threshold line. • 12h / 24h time format toggle — for everyone who didn't want their wake time written as 02:00. • Onboarding rebuilt for Wolves, DSPD, and night-shift workers. Less 9-to-5 bias, sharper insights. • Resume mid-quiz if you got interrupted by a call. Bug fixes — including the 3:30 AM coffee time some Wolves were seeing. Keep the reviews coming.

What's New in This Version Fixed: Coffee timing now shows correct AM/PM for all chronotypes (no more "3:30 AM" for afternoon wakers) New: 12-hour / 24-hour time format toggle in Settings → Display Improved: Onboarding questions no longer assume a 9-5 schedule — works better for Wolves, DSPD, and non-standard routines Fixed: Sleep check-in ("How was your sleep?") now saves properly on first interaction All times across the app now display in your preferred format

For version 1.5.1 — Major update ARC 1.5.1 is a major rebuild. Here's what's new: CAFFEINE HALF-LIFE TRACKER The feature no other app has. Log any drink and watch your caffeine leave your system in real time — with a live decay curve and a sleep-safe time prediction that updates with every entry. SUNLIGHT TIMER Track your morning light exposure with a live timer and progress ring toward the 20-minute target. The single most effective thing you can do for your sleep starts at sunrise. REDESIGNED HOME SCREEN One active block, live countdown, and a contextual HUD (Sun / Move / Coffee) that adapts to the time of day. No clutter. Just what you need to do right now. 22-POINT PRECISION DIAGNOSIS The onboarding now collects a full biological profile — sleep drift, energy crash timing, caffeine habits, and work schedule — before revealing your chronotype. The most thorough circadian onboarding in the category. ADAPTIVE PROTOCOLS Your protocol now adjusts for weekends, travel, and poor sleep nights. ARC responds to your real life, not an idealized schedule. CONTEXTUAL INTEL FEED Daily briefings triggered by your actual behavior from the day before — not a static article library. UPDATED PRICING Now available as Weekly ($4.99/week) or Annual ($34.99/year). The yearly plan includes a 3-day free trial.

For version 1.5.0 — Major update ARC 1.5.0 is a major rebuild. Here's what's new: CAFFEINE HALF-LIFE TRACKER The feature no other app has. Log any drink and watch your caffeine leave your system in real time — with a live decay curve and a sleep-safe time prediction that updates with every entry. SUNLIGHT TIMER Track your morning light exposure with a live timer and progress ring toward the 20-minute target. The single most effective thing you can do for your sleep starts at sunrise. REDESIGNED HOME SCREEN One active block, live countdown, and a contextual HUD (Sun / Move / Coffee) that adapts to the time of day. No clutter. Just what you need to do right now. 22-POINT PRECISION DIAGNOSIS The onboarding now collects a full biological profile — sleep drift, energy crash timing, caffeine habits, and work schedule — before revealing your chronotype. The most thorough circadian onboarding in the category. ADAPTIVE PROTOCOLS Your protocol now adjusts for weekends, travel, and poor sleep nights. ARC responds to your real life, not an idealized schedule. CONTEXTUAL INTEL FEED Daily briefings triggered by your actual behavior from the day before — not a static article library. UPDATED PRICING Now available as Weekly ($3.99/week) or Annual ($34.99/year). Both include a 3-day free trial.

What's New in ARC v1.2.0: - Critical Caffeine Wall Alert: New biological deadline detection. The app now specifically warns you when you've hit your 'Caffeine Wall' with a high-visibility alert to protect your deep sleep recovery. - Synchronized Biometrics: We've perfectly aligned our notification engine with the in-app countdowns. Your biological nudges and the UI are now in 1:1 sync. - Optimized Hero Card: A redesigned, simplified home screen interface that puts your most critical biological goal front and center with improved visual hierarchy. - Bio-Anchor Tracking: Improved one-tap sunlight logging to anchor your circadian rhythm and build your biological baseline. - Real Data Insights: Bio Analysis charts are now fully dynamic, reflecting your actual sunlight latency and wake stability over the last 7 days. - Architecture Cleanup: Massive under-the-hood optimization, removing unused dependencies for a lighter, faster application experience.

What's New in ARC v1.1.1: - Caffeine Wall Countdown: A live, persistent timer on your home screen showing exactly when caffeine will start interfering with your sleep. Never miss your biological cutoff. - Bio-Anchor Logging: Integrated one-tap sunlight logging. Anchor your circadian rhythm and build your biological baseline with persistent tracking. - Real-World Insights: Your Bio Analysis charts are now powered by your actual logged data. Track your Photon Latency and Anchor Stability over time. - Conversational UI: Refined notifications and interface for a clearer, jargon-free experience focused on outcomes. - Performance & Sync: Automated wake-time tracking and optimized for the fastest biometric experience.

Your circadian library just got a serious upgrade. New Intel Drops: • Social Jetlag — why sleeping in on weekends wrecks your Monday • NSDR: The Reset Button — restore dopamine in 10 minutes, no caffeine • Temperature Minimum — your body's secret clock-shifting hack • Blue Light: The Real Truth — it's not what the internet told you • Your Chronotype Is Genetic — you're not lazy, you're wired differently • Meal Timing > Calorie Counting — your gut has its own clock • Exercise As A Time Signal — movement anchors your rhythm • The 90-Minute Sleep Cycle — why you wake up groggy • Night Shift Survival Guide — protecting your clock while working against it • Dopamine & Morning Light — the motivation molecule needs photons Night Shift Intelligence: • Fixed schedule alignment for night shift workers • Smarter notification timing anchored to YOUR actual day • Logs tab now shows "Night Shift Protocol" with adjusted wake time Sun Button Fix: • Resolved tap responsiveness on the sunlight logging button • Improved feedback for chronotypes without a dedicated sunlight block

PRECISION ONBOARDING V2 We rebuilt the entire onboarding experience from the ground up: • NEW: Goal-Specific Calibration – Focus, Sleep, or Health. • NEW: Age-Aware Protocols – Your circadian rhythm changes with age. • NEW: Digital Sunset Tracking – We now know if blue light is your enemy. • NEW: Scientific Briefings – Learn about Adenosine (the molecule making you tired). • NEW: Perfect Day Preview – See your optimized day before you subscribe. Plus: Night Shift logic is now bulletproof. Sync with your biology. Download the update now.