Last updated: 24 October 2026
Dan's Food Diary is a general information and planning tool. It is not medical advice and does not diagnose or treat any condition. Speak to your GP or a registered dietitian before changing your diet.
Everything you enter (meal plans, shopping lists, favourites, freezer items, budget, food and symptom diary, reintroduction results) is stored only on your own device, in your browser's storage. There are no accounts. We do not collect, send, sell or share your data, and there is no advertising or tracking.
When you first open the app it asks for your first name, age and goals. These are used only to greet you and guide your plan. They are stored on your device with everything else and are never sent to us.
The app is for people aged 16 and over.
The scanner uses your camera only while you're scanning, to read the barcode on your phone. No pictures are saved or sent anywhere. To find the product, the barcode number is sent to Open Food Facts, a free public food database, which also sees your device's IP address. Product information, including the NOVA processing score and listed allergens, comes from Open Food Facts under the Open Database Licence.
If you switch on checks for added sugar, sweeteners, ultra-processed food, seed oils or free-from, those choices are stored on your device only. If you use "Ask your own AI", they are added to the question so your AI can check for them too.
Photos you add to a meal are shrunk and stored only on your device. They are never uploaded. A tiny thumbnail is kept with the meal so it shows on your plan and diary; thumbnails older than 60 days are removed, and photos older than 90 days that are no longer in your plan or diary are deleted automatically. Backups include the tiny thumbnails but not the full photos.
If your phone saves photos in HEIC format (common on Samsung and iPhone), the app converts them to JPEG on your phone so they can be shown. The first time, it downloads a free converter (heic2any) from the jsDelivr network. The photo itself isn't uploaded.
When you take a photo of an ingredients list, the text is read on your phone. The photo is not uploaded or saved. The first time, your phone downloads the free text-reading software (Tesseract) from the jsDelivr network, which sees your device's IP address.
The app never sends anything to an AI by itself. If you tap "Send to my AI" or one of the AI app buttons, the question (and your photo, if you took one) goes to the AI app you choose, such as ChatGPT, Gemini, Claude or Copilot, under that company's own privacy policy. Nothing is sent until you choose an app. The question doesn't include your name or age. Your food diary is health information, so only share it with an AI you trust.
If you save a backup, the file goes to your own device. It never comes to us.
Clearing the app's site data in your browser settings, or uninstalling the app, deletes everything it has stored.
The app loads fonts from Google Fonts, which means your device's IP address is sent to Google when the fonts load. Links to supermarket websites and Trolley.co.uk open those sites, which have their own privacy policies.
Questions: dansfooddiary@outlook.com
Recipe photos are example dishes from Openverse, used under their Creative Commons licences: