Circadia: Fasting Tracker

Lake Effect Logic LLC

About this app

Fasting, without pressure.

Circadia is a private fasting timer, journal, and educational wellness companion for adults. Choose a familiar rhythm or a custom goal from 1 to 24 hours, then adjust, pause, or end whenever you need.

Flexible timer
- Timed plans and custom goals from 1 to 24 hours
- Elapsed and remaining-time views
- Pause, resume, edit, or end without losing context
- Open Fast mode with a clear safety confirmation and no finish alert
- Ongoing notifications and a home-screen widget

Private wellness journal
- Log completed fasts, hydration, mood, notes, and weight
- Review patterns, trends, streaks, and milestones
- Honest logging earns recognition; longer fasts do not earn extra rewards

Educational coach
- Ask about meals, hydration, sleep, travel, exercise, and your current timer
- Built-in guidance works without an account
- Optionally download a model to select among reviewed presentation styles on your device
- Clear boundaries prevent diagnosis, treatment, medication, or dosage advice

Phone and Wear OS
Use Circadia on Android phones and Wear OS watches. The Wear OS app supports quick timer controls, hydration logging, offline actions, and paired-device synchronization through the Wearable Data Layer.

Private by design
Fasting records and coach prompts stay in app-private storage. Android cloud backup is disabled. Circadia has no account, advertising, behavioral tracking, or third-party analytics.

Important health notice
Circadia is for adults age 18 and older. Circadia is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Do not fast if you are pregnant or breastfeeding, have a history of disordered eating, or have been advised not to fast. If you have a condition or take medication, consult a qualified healthcare professional. Stop fasting and seek care if you feel unwell.

Privacy Policy:
https://lakeeffectlogic.com/apps/circadia/privacy/

Support:
https://lakeeffectlogic.com/apps/circadia/support/

What’s new

Initial Circadia release:
- Flexible fasting goals from 1 to 24 hours
- Private fasting, hydration, weight, mood, and notes journal
- Built-in guidance and an optional on-device coach model
- Android widget, notifications, and Wear OS companion
- Adult consent, health safeguards, privacy controls, and local data deletion