Kaizen ("we," "our," or "the app") respects your privacy. This Privacy Policy explains what information we collect, how we use it, and the choices you have. By creating an account or using Kaizen, you agree to the practices described here.

Account information: your name, email address, and authentication details when you sign up or sign in using email, Google, or Apple.

Health & nutrition data: the food logs, body measurements, body scan images, weight entries, and related insights you choose to record. This data is voluntary—you may use the app without logging it. When you use an AI-powered feature, the images and information described in the "Third-Party AI Service & Consent" section below are transmitted to our AI analysis partner to generate your insights.

Usage data: approximate device and session information such as timezone, language preference, and feature interactions used to personalize your experience.

We use your data to:

• Provide personalized nutrition insights, progress tracking, and coaching cues.
• Generate body composition estimates from photos you submit for analysis.
• Connect you with a coach you have explicitly invited or accepted.
• Send re-engagement and summary notifications related to your goals.
• Maintain and improve the app's features, performance, and security.

Kaizen requests access to certain device capabilities only when you choose to use the related features. Each permission is requested at the moment it is needed, and you can decline any request without losing access to the rest of the app.

Camera: Kaizen uses the camera to photograph meals for nutrition analysis, grocery, fridge and to capture optional front and side body images for body-composition and alignment tracking.

Photo Library: Kaizen accesses your photo library so you can select an existing meal or body image for nutrition, body-composition, or alignment analysis.

Microphone: Kaizen uses the microphone when you choose voice input to describe a meal or speak with the Kaizen Coach.

Kaizen does not currently sync directly with Apple Health (HealthKit). Activity and wearable data, if available, is entered manually or through integrations you explicitly connect. No health records are read from or written to the Health app.

Kaizen's AI-powered features (meal, grocery and fridge analysis, body-composition and alignment estimates, and coaching cues/insights) are provided by third-party AI models from OpenAI (GPT), Google (Gemini), and Anthropic (Claude), accessed through our platform provider (Base44). Before any of your personal data is shared with these services, Kaizen clearly discloses what will be sent, identifies the recipient, and asks for your explicit permission. You can decline, and you can change your mind at any time; declining keeps AI features off while the rest of Kaizen remains usable.

Data sent to the AI service may include:

• Meal, grocery and fridge photos you capture, plus any portion or food hint you type.
• Body-scan images and the measurements you enter (weight, waist, neck, height and gender).
• Mindset check-in reflections and coaching context (your goals, focus areas, streaks and progress summaries) — only when you use those features.

How this data is used: solely to generate your personalized nutrition, body-composition, alignment and coaching insights. Submitted images are not used to train models that identify you personally across services.

Sharing, retention & protection: data is transmitted to the AI service over encrypted connections and retained only as needed to deliver and improve your insights, in line with this policy. We require our AI service provider to provide protections that are the same or equal to those described here, including limitations on use, secure transmission, and safeguards against unauthorized access.

Your choices: consent is captured in the app before the first AI analysis and recorded on your profile. AI features remain gated until you allow them. You can revisit the disclosure at any time; to withdraw consent or request deletion of data already processed, contact support.

Data is only shared with a coach or friend after you explicitly initiate or accept a connection. You control what each connection can see and can revoke access at any time. Revoked connections immediately lose access to your data. Sharing with your coach or friends is separate from sharing data with our AI service, which is described in the "Third-Party AI Service & Consent" section above.

Your information is stored securely and transmitted using encryption. Access is restricted to systems and personnel necessary to operate and improve the app. While we work to safeguard your data, no method of storage or transmission is fully secure.

You may edit or delete your logged entries, body scans, and account data at any time from within the app. You can also disconnect coaches, revoke friend access, and manage notifications in app settings. To request deletion of your account and associated data, contact support.

Kaizen is not intended for children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us data, please contact us and we will delete it.

Kaizen offers paid subscriptions (Kaizen Premium and CoachConnect Pro tiers). On the iOS app, subscriptions are purchased by linking out to your device's default web browser, where payment is processed securely by our payment provider, Stripe. Kaizen does not use Apple In-App Purchase for digital subscriptions. Your subscription is managed on the web, accessible from any browser, and its status syncs back to your Kaizen account automatically after purchase. To manage or cancel your subscription, use the link provided in your purchase confirmation email or the subscription management page reached from your browser.

Payment data: your payment card details are entered directly with Stripe on their secure, encrypted checkout page and are never transmitted to or stored by Kaizen. We only receive confirmation of the completed purchase and the subscription status needed to enable your features.

We may update this Privacy Policy from time to time. Material changes will be reflected by updating the "Last updated" date above. Continued use of Kaizen after changes take effect constitutes acceptance of the revised policy.

Questions about this policy or your data can be directed to our support team through the app's help or contact section.