Privacy Policy

Last updated: 23 August 2026

This Privacy Policy explains what information FeuFitness ("the App", "we", "us") collects, how it's used, and the choices you have. FeuFitness is a BMI, weight, food, and exercise tracking app.

The short version

• Most of your data (weight entries, food log, water intake, exercise history, profile details) is stored only on your own device by default. We don't see it, and it isn't sent anywhere unless you turn on Cloud Sync.
• If you create an account to enable Cloud Sync, that same data is stored securely with our backend provider (Supabase) so it can follow you across devices.
• Premium features that use AI (Coach chat, AI Meal Scan) send the relevant message or photo to our AI provider (Anthropic) through our own server — never directly from your phone to a third party.
• We do not sell your personal data, and we do not use it for advertising.

Information we collect

Information you provide directly

• Profile details: height, weight, date of birth/age, sex, ethnicity (used only to select the correct BMI category thresholds and food suggestions), fitness goals, areas to avoid during exercise, unit preference (metric/imperial), and language preference.
• Weight log entries: the weight values and dates you log.
• Food log entries: foods you log, including custom entries you type in yourself, and photos you choose to submit for AI Meal Scan.
• Water intake entries: the amounts and times you log.
• Exercise and plan activity: which workouts/meditation sessions you mark complete, and any custom notes you add.
• Messages you send to Coach Lumi (our AI chat feature), if you use it.
• Account credentials (email and password) if you choose to create an account for Cloud Sync. Passwords are handled by our backend provider's authentication system — we do not see or store your password in plain text.
• Support messages: anything you submit through the in-app Help/Feedback form, plus an optional contact email if you choose to provide one.

Information collected automatically

• Step count: read from your phone's own motion sensor (iOS) or a live session counter (Android), used only to display your activity on the Home dashboard. This data is read locally on your device; historical step counts are not uploaded to us.
• Purchase/subscription status: if you subscribe to Premium, our payment processing partner (RevenueCat) receives transaction information from Apple's App Store needed to verify and manage your subscription (see "Third parties" below).

Information we do not collect

• We do not use any third-party analytics or advertising SDKs.
• We do not access your photo library, contacts, location, or microphone. (Note: on Android, the camera library we use requests microphone permission as a side effect of supporting video capture — FeuFitness never records or transmits audio, and only uses the camera for still photos: barcode scanning and meal photos.)

Health data and your consent

Much of the information you provide — weight, BMI, food logs, and similar health-related data — is treated as a special, more sensitive category of data under laws like the EU GDPR and UK GDPR (Article 9), Canada's PIPEDA, and California's CPRA. Where required, we rely on your consent as the legal basis for collecting and processing this data, which you give by creating a profile and using the relevant features. You can withdraw this consent at any time by deleting your account and data — see "Your choices and rights" below.

How we use your information

We use the information above to:

• Show you your BMI, weight trend, and related health estimates (BMI category, estimated body fat %, estimated basal metabolic rate) — these are formula-based estimates, not medical measurements, and are clearly labeled as such in the app.
• Log and display your food, water, and exercise history.
• Generate calorie targets and a daily meal plan, and suggest exercises based on your preferences.
• Power the optional AI features (Coach Lumi chat and AI Meal Scan) — see below for how this data is handled.
• Sync your data across your devices, if you enable Cloud Sync.
• Process and manage your Premium subscription.
• Respond to support requests you submit.
• Show the app in your selected language, including right-to-left layout for Arabic and Urdu.

AI features

If you use Coach Lumi or AI Meal Scan (Premium features), the relevant chat message or meal photo — along with limited context needed to make the response useful, such as your recent weight trend or logging streak — is sent to our backend, which forwards it to our AI provider, Anthropic, for processing. This data is used solely to generate a response and is not used by us to train AI models. We do not send your name, email, or exact identity to the AI provider as part of this process — requests are tied to an anonymous internal user ID.

Third parties we work with

We share limited information with the following providers, solely to operate the app:

We do not sell, rent, or share your personal information with any other third party for their own marketing purposes.

Data storage and security

Data that stays on your device is protected by your device's own security (including Face ID/passcode lock, if you enable the in-app biometric lock). Data synced via Cloud Sync is stored with Supabase, protected by row-level security so that only your authenticated account can access your own records. We take reasonable technical measures to protect your data, but no method of transmission or storage is 100% secure.

Data retention

We retain your Cloud Sync account data for as long as your account remains active. We don't currently delete or anonymize inactive accounts automatically. You can request deletion of your account and all associated data at any time — see "Your choices and rights" above; we action deletion requests within 6-8 weeks.

Your choices and rights

• Cloud Sync is optional. The app works fully without ever creating an account.
• You can delete individual entries (weight, food, water) at any time within the app.
• You can request deletion of your account and all associated data by contacting us through the in-app Help/Feedback form. We will action this within 6-8 weeks.
• You can request a copy of the data we hold about you through the same channel.
• If you are in the European Economic Area, you have rights under the GDPR to access, correct, delete, or restrict processing of your personal data, and to lodge a complaint with your local data protection authority.
• If you are in the United Kingdom, you have rights under the UK GDPR (the UK's own retained version of the GDPR) to access, correct, delete, or restrict processing of your personal data, and to lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk.
• If you are in Canada, you have rights under PIPEDA (the Personal Information Protection and Electronic Documents Act) to access your personal information and request that inaccuracies be corrected. Health data is treated as requiring your express consent, consistent with how we handle it under the GDPR and CPRA. You can lodge a complaint with the Office of the Privacy Commissioner of Canada (OPC) at priv.gc.ca.
• If you are a California resident, you have rights under the CCPA/CPRA to know what personal information we collect and to request its deletion. Health information (like your weight, BMI, and food logs) is treated as "sensitive personal information" under the CPRA — you have the right to limit our use of it to what's needed to provide the app's features. We do not sell personal information, and we do not use sensitive personal information for any purpose beyond providing the app's features.
• If you are a Washington resident, the data you log in FeuFitness (weight, food, water, exercise history) is "consumer health data" under Washington's My Health My Data Act. We collect and use it based on your consent (given by creating a profile and logging entries), and you can withdraw that consent at any time by deleting your account.
• We will not discriminate against you for exercising any of the rights above — for example, by degrading app functionality or charging a different Premium price because you asked us to delete your data or limit its use.

Children's privacy

FeuFitness is not directed at anyone under 18, and we do not knowingly collect personal information from anyone under that age. If you believe someone under 18 has provided us with personal information, please contact us through the in-app Help/Feedback form so we can delete it.

Health disclaimer

FeuFitness provides general fitness and nutrition estimates for informational purposes only. Nothing in the app constitutes medical advice, diagnosis, or treatment. Always consult a qualified health professional regarding your individual health circumstances.

International data transfers

Because our service providers operate internationally, your information may be processed in countries other than your own, including the United States. Where required, we rely on appropriate safeguards (such as standard contractual clauses) for these transfers. Transferring data across borders means it may become subject to the laws of the country it's processed in, including possible access by that country's government or courts, even where we and our providers take reasonable steps to protect it.

Changes to this policy

We may update this Privacy Policy from time to time. If we make material changes, we will update the "Last updated" date above and, where appropriate, notify you within the app.

Contact us

For any privacy questions, requests, or concerns, please use the Help / Send Feedback option within the app's Settings. This routes your message to us directly without publicly exposing any contact address.

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