User Rights & Erasure Guide

Data Deletion & Account Erasure Instructions

Effective Date: August 30, 2026 | Version: 0.9.8 | Contact: privacy@mainnutrition.app

1. Your Right to Erasure 2. Method 1: Instant In-App Deletion 3. Method 2: Revoking Google Permissions 4. Method 3: Manual Erasure by Email 5. What Data Is Deleted 6. Retention & Backups Timeline

1. Your Right to Erasure

At Main Nutrition, you own your health and dietary data. In accordance with the General Data Protection Regulation (GDPR Article 17), the California Consumer Privacy Act (CCPA/CPRA), and Google Play / Google OAuth Data Safety requirements, you have the absolute right to permanently delete your account and all associated data at any time.

2. Method 1: Instant In-App Account Deletion (Recommended)

You can execute complete data deletion directly inside the Main Nutrition application in seconds:

1 Open Settings

Launch the web app at mainnutrition.app/app and navigate to the Settings & Goals tab (gear icon in the bottom menu).

2 Locate Account Management

Scroll to the bottom of the Settings page to find the Danger Zone / Account Management section.

3 Click "Delete Account"

Click the red Delete Account & Wipe All Data button. Confirm the security prompt. The system will immediately execute recursive Firestore document deletions across your user container, wipe your local storage/IndexedDB cache, and sign you out.

3. Method 2: Revoking Google OAuth Permissions

If you signed in using Google or connected Google Fit, you can revoke Main Nutrition's access through Google's centralized account dashboard:

Visit Google's permission management page: https://myaccount.google.com/permissions.
Under "Third-party apps with account access", click on Main Nutrition.
Click Remove Access to immediately invalidate all OAuth tokens and background sync tasks.

4. Method 3: Manual Erasure Request by Email

If you are unable to access your device or prefer manual handling by our Data Protection team:

Send an email to privacy@mainnutrition.app with the subject line "Data Deletion Request".
Include the registered email address associated with your Main Nutrition account.
Our privacy team will verify the request and permanently wipe all corresponding Firestore records and cloud backups within 7 business days, followed by written confirmation.

5. What Data Is Permanently Deleted?

When an account erasure request is processed, the following items are permanently destroyed:

User Profile: Name, email address, age, sex, weight, height, BMR, TDEE, and macronutrient targets.
Meal History & Photos: All logged meals, uploaded food photographs, recipe notes, and time-stamped nutrition breakdowns.
Biometrics & Vitals: All water intake logs, fasting logs, Google Fit sync caches, heart rate records, and biomarker logs.
Preferences: Safe Choice exclusions, allergen filters, skin and sound preferences.
Local Device Cache: IndexedDB database records and localStorage tokens on your browser.

6. Retention & Backups Timeline

Live data in Cloud Firestore is erased instantaneously upon request. Immutable cloud disaster-recovery snapshots rotate and purge automatically on a rolling 30-day lifecycle, after which zero trace of your personal records remains on any server.