How can we help?
Troubleshoot common questions, learn how the Living Light engine works, or contact our core engineering team directly.
Need personal assistance?
We respond to every user message within 24 hours. Whether it's a bug report, subscription inquiry, or chronotype question, our team is here.
Browse by Topic
Subscriptions & Purchases
Restore purchases, understand the 7-day annual trial, or cancel in Apple ID settings.
Widgets & Live Activities
Set up the Dynamic Island 20-min light timer and Lock Screen cutoff widgets.
Caffeine & Biological Math
How the cutoff engine solves for <50mg active caffeine at your bedtime.
Notifications & Timers
Local, private schedule notifications and iOS Focus Mode compatibility.
Data & Privacy Controls
Local-first SQLite database management, log retractions, and data wipes.
Chronotype Recalibration
Retaking onboarding acts, adjusting wake targets, and dip corrections.
Frequently Asked Troubleshooting
How do I restore my existing subscription?
Open ARC on your iOS device, navigate to the Settings tab (⚙️ in the top right), and tap 'Restore Purchases'. If you are signed into the same Apple ID used to make the purchase, your subscription entitlement will unlock immediately.
Why is my morning light Live Activity not showing on the Lock Screen?
Ensure Live Activities are enabled in iOS: Go to iPhone Settings > ARC > and verify 'Live Activities' is toggled ON. Also ensure that your phone is not in a restrictive Focus mode that blocks lock-screen activities.
How do I edit or delete an incorrect coffee log?
ARC uses an append-only event log where every entry can be retracted. Tap on the caffeine card or open the log list, select the entry you wish to remove, and tap 'Undo' or 'Retract Log'. Your cutoff and decay curve will immediately recalculate.
Does ARC work when traveling across time zones?
Yes! ARC detects your device's UTC offset change upon landing with zero GPS tracking required. It automatically launches the Travel / Jet Lag event loop, giving you clear seek-light and avoid-light windows to shift your internal clock safely.
How do I contact a human for bug reports or feature requests?
You can email our founder and engineering team directly at pritamfinds@gmail.com. We typically respond within 24 hours.
Looking for scientific protocols or free calculators?
Explore our peer-reviewed chronobiology guides or use our standalone calculators.