Privacy Policy

Atomic Fast ("the App") is a personal health and nutrition tracking app. Your privacy is important to us. This policy explains what data the App accesses, how it is used, and your rights.

All personal data — including fasting sessions, meal logs, nutrition entries, health snapshots, user profile, and preferences — is stored locally on your device using Apple's SwiftData framework.

We do not operate user accounts, cloud databases, or backend servers that store your personal data. Your data never leaves your device except as described below.

With your permission, the App reads health data from Apple HealthKit, including: step count, active energy burned, exercise minutes, resting heart rate, heart rate variability (HRV), and sleep analysis.

This data is used solely to calculate your on-device readiness score and health insights. HealthKit data is never sent to external servers, shared with third parties, or used for advertising.

You can revoke HealthKit access at any time in Settings → Health → Data Access & Devices → AtomicFast.

The App requests camera access to scan food items and barcodes. Photos taken for food identification are processed as described under "External Services" below.

Food photos you choose to save are stored locally on your device. The App does not access your broader photo library without explicit action.

Google Gemini API — When you use the "Scan Food" feature, your food photo is sent to Google's Gemini API for AI-based food identification and nutrition estimation. Google's privacy policy applies to this data. Photos are sent transiently and are not stored by the App on any server.

USDA FoodData Central — When you search for foods, your search query is sent to the USDA's public API to retrieve nutrition data. No personal information is included in these requests.

Open Food Facts — When you scan a barcode, the barcode number is sent to the Open Food Facts public API to look up product information. No personal information is included.

The App uses local notifications only (fasting reminders, meal reminders). These are scheduled on-device and do not involve any external push notification services or servers.

Atomic Fast does not include any analytics SDKs, crash reporting tools, advertising frameworks, or third-party tracking. We do not collect usage data, device identifiers, or behavioral analytics.

Since all data is stored on your device, you can delete it at any time by deleting the App. Individual food entries, meal logs, and fasting sessions can also be deleted within the App.

The App is not directed at children under 13 and does not knowingly collect personal information from children.

We may update this privacy policy from time to time. The updated version will be accessible within the App and will indicate the date of the latest revision.

If you have questions about this privacy policy, please contact us at support@atomicfast.com.