Platewell · 中文

Platewell Privacy Policy

Effective October 28, 2026

Platewell (“the app”) is a food, water and supplement log made by Yukun Sun, an individual developer. This policy explains what the app does with your information. In short: your log stays on your iPhone, there is no account, and nothing is sent anywhere unless you ask for it.

What the app stores

Meals and their photos, notes you type, water, weight, supplements, saved foods, your profile (name if you give one, sex, age, height, goal weight, activity level, optional background, eating plan) and settings are stored only on your device. The developer has no server and cannot see this data. The app also creates a random ID on your iPhone so that an optional account can be added in a future version; it is not linked to you, your device or your Apple ID, and it is not sent anywhere.

If you use the Platewell widgets or the Apple Watch app, a short summary of today (water, calories, supplements) is shared with them on your iPhone and your paired Apple Watch only.

Photos

You can take a photo or choose one you already took. Choosing uses Apple’s photo picker: Platewell receives only the photos you pick and cannot see the rest of your library, so it does not ask for access to Photos. It reads the time a picked photo was taken to fill in the meal time, which you can change. It does not use a photo’s location; the copies it saves and sends are re-encoded without location or other photo metadata.

No tracking

The app has no ads, no analytics, no tracking and no third-party SDKs. It does not collect device identifiers or your location.

AI features (only when you choose them)

Some features estimate nutrition from a photo or a short note, read labels, or write advice. You choose how each one works:

• Apple Intelligence (including Image Playground pictures) runs on your iPhone. Nothing leaves the device.
• Your own Claude (Anthropic) or OpenAI API key. When you tap an AI button and agree, the app sends only what that request needs, directly from your iPhone to that provider. Depending on the feature this can be a meal or label photo, the note you typed, the foods and nutrition in your log, your eating plan, goal weight and activity level, the profile values you typed yourself, morning weights you entered in the app, and your targets. The developer never receives it. The provider’s own privacy policy applies: Anthropic, OpenAI. Your API key is kept in the iOS Keychain on your device.
• Copy and paste. The app copies a prompt (with the same kind of content) so you can paste it into any AI app yourself. Nothing is sent by Platewell; the AI app you use applies its own privacy policy.

Values read from Apple Health are left out of all of these requests and prompts (see below). The app asks for your permission before it first sends anything to an AI service, and you can withdraw it at any time in Settings → About.

Apple Health

Apple Health is optional. With your permission the app can:

• Write water, weight and the nutrients of your meals and supplements to Apple Health, when you turn on sync.
• Read your weight (to fill in days you did not log it) and today’s active energy (to raise your water goal on active days), when you turn on sync.
• Read your sex, date of birth, height and latest weight, only if you tap “Fill in from Apple Health” while setting up your profile.

Values read from Apple Health are used only inside the app. They are never included in AI requests or prompts you copy, never sent to the developer or any other third party, and never used for advertising or marketing. If you change a value the app filled in from Apple Health, it counts as your own entry from then on. Targets the app calculates on your iPhone, such as your daily calorie and water goals, can take Apple Health data into account; those target numbers may be part of an AI request you start.

Barcode lookups

If you scan a barcode, the barcode number is sent to Open Food Facts (openfoodfacts.org) to look up the product. No other information is sent.

Backup

Backup creates a file only when you tap Back Up, saved where you choose (for example iCloud Drive). The file contains your log, including any weights imported from Apple Health, so keep it somewhere private. Restoring reads a file you pick. The app has no automatic cloud sync.

Children

The app is not directed to children under 13.

Deleting your data

Delete entries in the app, or delete the app to remove everything stored on your device. Data written to Apple Health can be managed in the Health app, where you can also turn off Platewell’s access at any time.

Not medical advice

Platewell is for general wellness and food logging. It is not a medical device and does not give medical advice.

Changes and contact

If this policy changes, the new version will be posted here with a new date. Questions: sunyukun9@gmail.com.