Resync

Beat jet lag with a personalized light, melatonin, and sleep plan for every trip.

Privacy Terms of Use Support

Privacy Policy

Resync runs entirely on your device. Your trips and schedule are computed locally and are never uploaded to our servers.

• Notifications: Resync schedules local reminders for when to seek or avoid light, take melatonin or caffeine, and sleep. Reminders are generated and delivered on your device.
• Your trips & plan: flight times, time zones, and your circadian plan are stored locally on your device (and synced across your own Apple devices via Apple frameworks where applicable).
• No location or health data: Resync does not track your location and does not read Apple Health data.

Purchases

We do not collect, sell, or share your personal data. There is no advertising and no third-party analytics or tracking SDKs. Purchases are processed by Apple; subscription status is managed via RevenueCat, which receives an anonymous app user ID and the App Store transaction — never your name, contacts, or content.

Children

This app is not directed at children under 13 and does not knowingly collect data from them.

Terms of Use

By downloading or using Resync, you agree to Apple's Standard End User License Agreement (EULA), available at apple.com/legal/internet-services/itunes/dev/stdeula, together with the terms below.

Subscriptions & purchases

Resync offers an auto-renewing annual subscription. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription at any time in your App Store account settings; cancellation takes effect at the end of the current billing period. A one-time per-trip purchase is also available — it is a non-consumable, one-time payment and does not auto-renew. Prices are shown in the app and may vary by region.

Disclaimer

Resync provides jet-lag and circadian guidance for general informational purposes and is not medical advice. Consult a qualified professional before using melatonin or making changes that affect your health or sleep. The app is provided "as is," without warranties of any kind; to the extent permitted by law, we are not liable for any damages arising from your use of it.

Support

Questions, bug reports, or feature requests: nathan@lumosheals.com. We aim to respond within a few business days.

Last updated: June 30, 2026.