Privacy Policy
This privacy policy governs your use of the NUTRIFOCUS software application for Android mobile devices, created by ZHT DEVELOPMENTS.
App owner: Fernando Silvosa (ZHT Developments).
Data Stored on Your Device (Local)
The data you manually enter for daily tracking is stored exclusively locally in your device's internal storage:
Body metrics (weight, height, age, sex).
Calorie goals and targets.
Meal history.
We do not have access to database servers or backups of this information.
Photo Processing for Food Recognition (External API)
When you use the camera function or upload a photo to automatically identify a food item, the process works as follows:
Temporary Transmission: The selected image is sent encrypted via HTTPS to our visual recognition API provider ([Provider Name, e.g., OpenAI / Google Cloud Vision API / LogMeal]).
Single Purpose: The provider analyzes the image strictly to return the text labels of the detected foods and their approximate nutritional values to the device.
Zero Retention on Our Own Backend: Our application does not store copies of your photos on any of our own servers.
Provider Policies: The API provider processes the image according to its own development privacy terms (typically with minimal temporary retention to mitigate abuse, without using the content to train public AI models).
Your Data Rights
By not registering user accounts in the cloud, you have direct control over your information:
Photo Deletion: Images processed by the API are not linked to you or saved in the app unless you choose to save them to your phone's gallery.
History Clearing: You can clear accumulated data by uninstalling the app or by pressing the "Clear Data" button in the app's local settings.
Security
The transmission of the photo to the recognition API is done through end-to-end encrypted channels (TLS/HTTPS) to prevent network interception.
Permissions requested by the app:
Notifications.
Read and write external storage.
Internet.
Contact
To contact us, please use email: zhtdevelopments@gmail.com