Privacy Policy

1. Introduction

Welcome to DietSem (owned and operated by RuiCodex). We are committed to protecting your personal information and your right to privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our web and mobile applications (collectively, the "Service"). Please read this privacy policy carefully. If you do not agree with the terms of this privacy policy, please do not access the application.

2. Information We Collect

To provide you with personalized AI diet and motivation coaching and tracking features, we collect several types of information:

• Account & Authentication Information: When you register an account, we collect your email address, password, and Google account details if you choose to sign in using Google OAuth.
• Health & Physical Metrics: Height, weight, target weight, age, gender, daily caloric goals, and any optional self-reported health conditions.
• Daily Lifestyle Tracking Logs: Meal names, estimated calories, photos of meals (stored on our server and shown in your Meal Diary until you delete the meal or your account, and sent to Google Vertex AI for the calorie analysis), water intake logs (glasses), step count logs, and completed exercise records.
• Transaction Information: Details regarding your in-app subscriptions and one-time purchases (product, order reference, purchase token, validity, and the in-app screen the purchase started from), processed and verified via Google Play Billing. We never see or store your payment card details.
• Progress & Usage Information: Your activity logs (water, steps, meals, weight, exercises), experience points, streaks, missions, achievements, AI credit balance and a small set of in-app product events (for example when the store or a paywall is opened) so we can show your progress and improve the app.

3. How We Use Your Information

We use the information we collect to operate, maintain, and improve our services, including:

• To calculate and monitor your daily calorie goals and progress.
• To generate and customize your weekly diet plans.
• To provide the AI Motivation Coach and other AI features. The coach is an AI assistant, not a psychologist, dietitian, doctor or other health professional, and it does not give medical advice. Text features use Anthropic (Claude), with Google Vertex AI (Gemini) as a fallback; meal photos are analysed by Google Vertex AI (Gemini).
• To analyze uploaded food photographs to estimate calorie content and provide dietary feedback.
• To verify purchases, deliver PRO features, AI credits and ad-free access via the Google Play Billing system, and to honour refunds.
• To power progression features (levels, streaks, daily missions, achievements) and to understand which parts of the app are used, in aggregate.
• To send account activation, security alerts, and support emails.

3a. Legal Basis, Consent and Retention of Health Data

Legal basis

• Health data is your height, weight, target and starting weight, age, gender and daily calorie goal, any health conditions or allergies you enter, the meals you log (names, calories, photos and the AI advice on them), your weight history and notes, your water, step and exercise logs, the AI plans, tips and coach answers based on them, and the achievements earned from them. It is special-category data. We process it only on the basis of your explicit consent (GDPR Article 9(2)(a); for users in Turkey, KVKK Article 6).
• We ask for that consent in a separate step before anything is stored. It is not part of any other terms and the box is never pre-ticked. We record the date, the version of the consent text and the language it was shown in.
• Account and purchase data (email, sign-in, PRO status, credits, purchases): performance of our contract with you (Article 6(1)(b)); purchase records also our legal accounting obligations (Article 6(1)(c)).
• Security, error and anonymous usage counts: our legitimate interest in running a safe and working app (Article 6(1)(f)).
• Advertising in the free version: Google's consent form is shown where the law requires it. Health data is never used for advertising.

Transfer outside the EU

DietSem's server is hosted in the United States. Anthropic (Claude) processes AI text requests in the United States, and Google (Vertex AI Gemini) may process meal photos and AI requests in the United States or other countries. Because of this, your health data leaves the European Union, where privacy law may protect you less. Your explicit consent also covers these transfers (Article 49(1)(a)). Data travels over an encrypted connection (HTTPS/TLS) and is stored in a password-protected database on a server with restricted access. It is not end-to-end encrypted.

Withdrawing consent

• You can withdraw your consent at any time in Settings > Your health data. It is as easy as giving it.
• When you withdraw, we immediately delete all your health data from our server: profile measurements and health conditions, meals and meal photos, weight, water, step and exercise logs, the AI weekly plan and the achievements based on them. The coach chat history kept on your device is cleared there.
• Your account, level, streak, purchases and credits stay. Withdrawal does not affect the lawfulness of processing before it.
• Without consent you cannot use tracking, the AI features or reports. You can still manage your account and purchases, or delete your account.

How long we keep it

• Health data is kept while your account exists and your consent is valid. If we change the consent text, we ask you again.
• Withdrawing consent deletes your health data at once. Deleting your account deletes the account and all associated data from our live database at once. Copies in our backups are overwritten within 30 days.
• Usage events lose their link to you when you withdraw or delete. Only anonymous counts remain.

4. Data Processing and AI Capabilities

Our application incorporates artificial intelligence capabilities powered by Anthropic (Claude) for text and Google Vertex AI (Gemini) for meal photos and as a text fallback. When you use an AI feature, the content it needs (your coach chat message or other text you enter, your meal photo, and the relevant profile and activity values such as height, weight, goal, health conditions or allergies, calories, water and steps) is sent to that provider to produce the answer. The coach chat history itself is stored only on your device. Both providers process this data under their commercial (enterprise) API terms and data governance and security standards, ensuring that your data is handled safely and not used to train generic public models.

5. Third-Party Integrations & Advertising

We cooperate with third-party service providers to facilitate our Service, process payments, and serve advertisements:

• Google Play Services & Google Play Billing: We use official Google APIs to handle and authenticate in-app subscriptions and purchase validation.
• Google AdMob: For non-paying (free) users, our mobile application integrates the Google AdMob SDK. The AdMob SDK collects and shares with Google your IP address (used to estimate your approximate location), app interactions (such as app launches, taps and ad views), diagnostic information about app and SDK performance, and device identifiers (such as the advertising ID), for advertising, analytics and fraud prevention. This happens even when you decline personalised ads; in that case Google shows non-personalised ads. DietSem itself requests only non-personalised ads. Users who subscribe to PRO or buy "Remove ads" do not see ads. In the European Economic Area, the United Kingdom and Switzerland we use Google's consent form (User Messaging Platform) before ads are requested, and you can change your choice at any time in Settings > Privacy options.
• Google Identity: Used to offer seamless signup and login functionality.
• Sentry (crash reports, Android app from version 1.10.6): To find and fix crashes and freezes, the Android app sends error reports to Sentry (Functional Software, Inc.), which processes them on our behalf as a data processor in its EU data region (Germany). A report contains the error type and stack trace, the app version and technical device information (device model and manufacturer, operating system and version, screen size, memory and storage, battery and charging state, network type, language setting and time zone) and a random installation ID used only to count affected installations. Reports never contain your meals, meal photos, weight or other health data, your messages to the AI Motivation Coach, your name, email address, account or advertising ID: error texts are removed on the device, IP addresses are neither stored nor used to locate you, and no screenshots are taken. We send these reports on the basis of our legitimate interest in keeping the app stable and secure (Art. 6(1)(f) GDPR). They contain no personal data that identifies you (only the random installation ID described above) and do not depend on the ad consent choice; they are used only to find and fix errors, never for advertising or profiling. If you object, contact us at info@ruicodex.com. Reports are kept for up to 90 days.

6. Security of Your Data

We use administrative, technical, and physical security measures to help protect your personal information. All communication with our servers is encrypted using Secure Socket Layer (SSL/TLS) technology. Your database credentials and personal metrics are secured within Microsoft SQL Server with strict access controls. While we have taken reasonable steps to secure the personal information you provide, please be aware that no security measures are perfect or impenetrable.

7. Your Data Rights & Deletion

You have the right to request access to the personal data we hold about you, request corrections, or request that we delete all your stored information.

Deleting your account: in the app, open Settings > Delete account. On the web, go to https://dietsem.ruicodex.com/Account/Delete, sign in and confirm. If you cannot sign in, email info@ruicodex.com from your account's email address and we delete the account within 30 days.

Deletion is immediate and permanent. It removes your account, profile and health details, meals and meal photos, weight, water, step and exercise logs, progress and achievements, AI usage counters and reminder settings; product usage events are kept only without any link to you. The coach chat history is stored only on your device and is cleared there. We keep records of your purchases (product, order number, date, price and status), no longer linked to your account, only as long as accounting law requires. Google Play keeps its own payment records, and deleting your DietSem account does not cancel a Google Play subscription: cancel it in Google Play.

8. Contact Us

If you have questions or comments about this Privacy Policy, please contact us at: