# Circa: Health Intelligence — Pricing

Circa: Health Intelligence is **free** on the App Store.

- **Price:** Free (US$0.00)
- **In-app purchases:** None
- **Subscription:** None
- **Account required:** No

## What is included

Every feature is included at no cost, with no account:

- Disciplined lifestyle logging of supplements, caffeine, and nicotine
- Live caffeine and nicotine decay curves against your bedtime, with the 50 mg threshold marked
- Audited insights (n, 95% confidence interval, p) with the actual nights behind each effect
- Transparent nightly sleep forecast with per-driver signed contributions
- 104-supplement library — goal-ranked, evidence-graded, interaction-flagged
- Home Screen and Lock Screen widgets for one-tap intake logging

## Privacy

100% on-device. Health data is fetched read-only from the Google Health API and computed locally. No servers, no analytics, no accounts, and no sale of data. Disconnecting revokes the access token and erases everything on your iPhone.

App Store: https://apps.apple.com/us/app/circa-health-intelligence/id6779644107

Last updated: 2026-07-23