Privacy Policy

Last updated: 16 October 2026

Platewise ("the app") estimates the calories and nutrients of your meals and gives eating suggestions. It is made by an independent developer based in Taiwan. This policy explains what information the app handles.

No account

Platewise has no sign-up and no account. The app creates a random install ID on your device. It is used only to count your usage limits and contains no personal information.

Your diary stays on your iPhone

Your meals, photos, weight, goals, body details (such as age, height and sex), diet preferences, allergens and workouts are stored on your device (and in your iPhone backup). We do not keep copies.

AI analysis

• When you analyse a meal photo, log a meal or workout in one sentence, or ask the coach (menu, shelf, travel, fridge, weekly report, meal plan), the photo or text needed for that request is sent over an encrypted connection to our relay server, together with the context the coach needs (for example today's totals, your targets, diet preference and allergens). The relay forwards it to our AI processing provider, OpenAI, and returns the result to your device.
• Our relay does not store photos, meal text or results. It keeps only usage counters linked to your install ID or subscription, which expire after about 40 days. Under its API terms, OpenAI processes the data to provide the service and does not use it to train its models.
• Nutrition labels are read on your device. Barcodes are looked up in the free Open Food Facts database; only the barcode number is sent, and results are cached on your device.

Apple Health

If you allow it, Platewise reads your weight, steps, active energy and workouts, and writes the meals (dietary energy), weight and workouts you log. Health data is used only to show your budget and progress inside the app. It is never used for advertising, never sold and never shared with third parties, and it is not sent to our relay except as part of a coach request you make. You can turn access off at any time in iPhone Settings.

Reminders

Meal, weigh-in and review reminders are local notifications scheduled on your device.

Advertising

The free version shows ads served by Google AdMob. Platewise only requests non-personalised ads and never asks to track you. To show and measure ads, Google may collect information such as your IP address, device model, operating system and how you interact with ads. Users in the EEA and UK are asked for consent through Google's consent message. When you choose to watch a rewarded ad, Google tells our relay that the reward was earned, together with your install ID. Your meals, photos and health data are never shared with advertisers. Learn more in How Google uses information from apps that use its services and the Google Privacy Policy. Platewise Pro removes ads.

Purchases

Purchases and subscriptions are processed by Apple. We do not receive your payment details. To apply your Pro limits, our relay asks Apple whether your subscription is active, using the transaction ID of your purchase.

Sharing

Share cards (for example a weekly report or a streak) are created on your device and are shared only when you choose to share them.

Deleting your data

Deleting a meal removes it and its photo from your device. Deleting the app removes everything. Entries written to Apple Health stay there until you delete them in the Health app. Since we store no diary data, there is nothing else to delete.

Children

The app is not directed at children under 13 and we do not knowingly collect personal information from children. Weight-loss targets are not offered to users under 18.

Changes

If this policy changes, the new version will be posted on this page with a new date.

Contact

Questions: methodhelm@outlook.com