🌱 PureCal Legal Hub

PureCal: No-BS Calorie AI

Android Package: com.purecal.calorietracker

Effective Date: November 7, 2026 Version: 1.0.0 Offline-First & Zero Dark Patterns

🛡️ Privacy Policy

At PureCal: No-BS Calorie AI ("PureCal", "we", "our"), developed for Android under package name com.purecal.calorietracker, we believe that your dietary habits, health stats, and personal nutritional journey belong exclusively to you. PureCal is built from the ground up as an offline-first utility with zero dark patterns, zero invasive tracking, and zero mandatory cloud accounts.

1. Offline-First SQLite Architecture & Zero Mandatory Accounts

PureCal operates entirely without requiring account registration, social login, email collection, or continuous server connections. All core application features:

Daily food logs, custom meals, and portion records,
Offline USDA Nutrition Database (FTS5 SQLite full-text search),
OpenFoodFacts barcode caching and manual lookup,
Meal Prep templates and multi-day calendar batch distributions,
Streak Freeze shield calculations and custom macro goals,

are stored 100% locally on your Android device inside an isolated SQLite database powered by drift. We do not operate a remote user profile database, nor do we sell, monetize, or harvest user telemetry.

2. On-Device Encrypted Backups & Zero-Network PDF Export

Local Cryptographic Backups: PureCal provides user-controlled JSON backup import/export. Exported archives are protected using industry-standard key derivation with PBKDF2-HMAC-SHA256 and encrypted with AES-256-GCM authenticated encryption. Your backup passphrase is never transmitted over any network.
Zero-Network Clinical PDF Reports: All exported 7-day and 30-day clinical macro and micronutrient PDF summaries are synthesized strictly on-device using local vector drawing and document rendering libraries. No health metrics leave your device when generating or previewing reports.

🌿 Android Health Connect Limited Use Policy Statement

PureCal requests access to Android Health Connect solely to improve your daily energy balance accuracy. We strictly comply with Google Play's Health Connect Permissions and Limited Use Requirements:

Permitted Data Scopes: PureCal requests read-only permission strictly for Steps (Daily Steps count) and ActiveCaloriesBurned (Active energy expenditure excluding basal metabolic rate). PureCal explicitly never requests TotalCaloriesBurned, heart rate, sleep, reproductive health, or location data.
Strict Client-Side Processing: Health Connect data is queried on-device via Android Health Connect API to adjust your remaining calorie allowance according to your selected rollover setting (Off, 50%, or 100%). Health Connect data is never uploaded to our servers, never sent to external third parties, and remains inside your device's local database.
No Secondary Uses: PureCal never transfers, sells, licenses, or provides Health Connect data to advertising platforms, data brokers, insurance providers, or information resellers.
No AI Model Training: PureCal never uses Health Connect data to train, fine-tune, or validate artificial intelligence, machine learning, or large language models.
Retention & Revocation: Health metrics are stored solely in your local SQLite cache for historical dashboard rendering. You can revoke access at any time in Android Settings > Security & privacy > Health Connect > PureCal.

3. Multimodal AI Recognition (Camera & Voice Input)

PureCal features optional AI-powered meal recognition via meal photos (AI Snap) or short audio descriptions (<15 seconds):

Stateless Transient Processing: When using standard AI recognition, compressed meal images or audio clips are transmitted over encrypted TLS/HTTPS directly to a stateless Google Cloud Platform (GCP) Cloud Run proxy executing Google Vertex AI (gemini-3.8-flash / gemini-3.5-flash-lite). Images and audio are parsed in-memory solely to produce structured nutritional JSON data (item names, estimated grams, calories, protein, carbs, fat, and fiber) and are immediately discarded. PureCal does not store, log, or train on your food photos or voice recordings.
Bring Your Own Key (BYOK) Hardware Isolation: Users who configure their own Google Gemini API key communicate directly with Google's API endpoints (generative-language.googleapis.com) without routing through any intermediary server. Your custom API key is encrypted and stored in your device's hardware-backed Keystore via flutter_secure_storage.

4. Google Play Billing & AdMob Rewarded Ads

Google Play Billing: PureCal integrates official Google Play In-App Billing for optional Pro and Lifetime purchases. Payment information, credit cards, and billing addresses are handled directly by Google Play. We only verify the cryptographic purchase token via Google Play Developer API without storing credit card details.
Opt-in Rewarded Ads: PureCal does not display intrusive banner ads, interstitial popups, or auto-playing videos. Users on the free tier may voluntarily choose to watch a Google AdMob Rewarded Video to earn additional AI recognition scans (+2 scans per ad). AdMob operates according to Google Mobile Ads SDK privacy guidelines.

📜 Terms of Service

By downloading, installing, or using PureCal: No-BS Calorie AI (com.purecal.calorietracker), you agree to these Terms of Service. If you do not agree, please uninstall the application immediately.

⚠️ Non-Medical Disclaimer & Lifestyle Use Only

PURECAL IS NOT A MEDICAL DEVICE AND DOES NOT PROVIDE MEDICAL ADVICE.

All content, calculations (including Total Daily Energy Expenditure / TDEE), nutritional estimates, macro breakdowns, AI image/voice inferences, and "FridgeChef" recipe suggestions provided within PureCal are for informational, recreational, and general wellness tracking purposes only. They are not intended as substitutes for professional clinical judgment, diagnosis, or personalized dietary treatment. Always consult a qualified physician or registered dietitian before embarking on any caloric deficit, surplus, fasting protocol, or vigorous exercise regimen. Never disregard professional medical advice because of information presented in PureCal.

1. Accuracy of AI Estimates & Food Databases

While PureCal utilizes certified USDA FoodData Central databases and cutting-edge Gemini AI vision models, nutritional values of prepared foods vary significantly based on ingredients, cooking methods, and portion sizes. AI estimates and portion sliders are calibrated heuristics. PureCal provides convenient visual portion sliders for real-time recalibration and assumes no liability for minor dietary discrepancies.

2. In-App Purchases, Subscriptions & Cancellations

PureCal offers transparent, honest pricing with zero trap subscriptions, zero unclosable paywalls, and zero streak restoration ransoms:

Subscriptions: Monthly ($2.99/mo) and Annual ($14.99/yr) plans renew automatically through Google Play unless canceled at least 24 hours prior to the conclusion of the active billing cycle.
One-Time Unlocks: Lifetime Pro ($29.99) and BYOK Power Unlock ($9.99) are non-recurring, one-time in-app purchases tied permanently to your Google Play account.
Cancellation & Refunds: Subscriptions can be managed, paused, or canceled at any time directly in the Google Play Subscriptions Center. Refunds are governed exclusively by Google Play's standard refund policies.

3. Bring Your Own Key (BYOK) Responsibility

Users electing to use the BYOK feature supply their own Google Gemini API credentials. You are solely responsible for compliance with Google Cloud / Google AI Studio terms and any API token consumption costs billed to your personal Google Cloud account.

🗑️ Data Deletion & User Controls

PureCal is engineered to give you absolute sovereignty over your digital footprint. Because PureCal employs an offline-first architecture with no mandatory account registration, we do not retain your personal meal logs, photos, or dietary history in cloud databases.

1. Instant Local Data Deletion (On-Device)

You have direct, immediate control over all data stored by PureCal on your Android device:

In-App Data Vault Wipe: Navigate to Settings > Data Vault > Wipe All Data. This will immediately purge all local SQLite tables (food logs, meal prep templates, custom foods, weight entries, and Health Connect caches).
Android System Storage Clear: On your Android device, go to Settings > Apps > PureCal > Storage & cache > Clear storage. This completely erases all local databases, preferences, and cached thumbnails.
App Uninstallation: Uninstalling PureCal from your Android device immediately and permanently deletes the local SQLite database and secure hardware keystore keys.

✉️ Server-Side Anonymous Identifier Deletion Request

PureCal does not store user profiles. However, to prevent abuse of free AI scan quotas, our stateless GCP Cloud Run proxy may record a cryptographic hash of an anonymous device identifier alongside remaining free scan credits (e.g., freeAiScansRemaining: 15), or retain temporary Google Play purchase verification tokens.

If you wish to permanently purge any server-side anonymous quota records or purchase verification logs associated with your transactions, you may submit a deletion request:

Email: support@bbbc.pw
Subject Line: Data Deletion Request - PureCal
Required Verification: Include your Google Play Order Number (e.g. GPA.xxxx-xxxx-xxxx-xxxxx) or anonymous Device Vault ID found in Settings > About PureCal > Vault ID.
Turnaround Time: All associated backend quota hashes and purchase verification records will be permanently purged from our infrastructure within 48 business hours, followed by written confirmation.