Buffd
Privacy policy
The short version: Buffd stores what you log so it can show it back to you. We don't sell your data, we don't show ads, and we don't track you across other apps or websites. You can delete your account and everything in it from inside the app at any time.
What we collect
| What | Why |
|---|---|
| Your email address | To sign you in, with a one-time code or through Apple or Google. |
| Waitlist email, if you join the waitlist on buffd.fit | Only to tell you when Buffd is available. It is not linked to an app account, and we delete it if you ask. |
| Profile details you enter: first name (optional), sex, age, height, weight, goal, training days, activity level and training background (optional) | To calculate your calorie, protein and water targets and tailor workouts. |
| What you log: meals and their nutrition, water, body weight, waist, sleep, energy, soreness, activities, workouts, sets and notes | To show your history, progress and streaks. |
| Photos you add: meal photos, progress photos and a profile picture | To keep them with your log and, if you ask, to estimate a meal's nutrition. |
| Basic technical data: app version, device type and error reports | To deliver app updates and fix problems. |
Runs. When you record a run, Buffd uses your phone's location to measure distance and pace and to draw your route. Location is read only while a run is in progress, from when you start it until you finish it. So that a run keeps tracking with your phone locked or in your pocket, this includes while Buffd is in the background during that run, and iOS shows its location indicator the whole time. Location is never read at any other time. The route, distance, time and splits are saved to your account so you can see them later, and you can delete any run from its summary screen.
Buffd does not collect your contacts, advertising identifiers or your browsing activity.
Apple Health
Connecting Apple Health is optional and off until you turn it on. You choose which categories to share on Apple's permission screen, and you can change or remove access at any time in the Health app under your profile, then Apps, then Buffd.
What Buffd reads: steps, walking and running distance, active calories, exercise minutes, flights climbed, resting heart rate, heart rate variability, cardio fitness, sleep, body weight, body fat percentage and workouts.
What Buffd writes: runs and lifting sessions you record in Buffd, and weigh-ins you log in Buffd.
How it is used: only to show your day inside the app and to count your training. Most Health readings are shown on your phone and are not saved to our servers. Three things are saved to your account, as part of your own log: workouts from Health are recorded as an activity (type and minutes) so they count toward your training days, and a weight or sleep reading is saved if you choose to use it in a check-in.
We never use Apple Health data for advertising or marketing, never sell it, and never share it with data brokers or other third parties. It is not used to train AI models.
Camera and photos
Buffd asks for the camera only when you scan a barcode, photograph a meal or use the form tracker, and for your photo library only when you choose a photo. Camera frames used for barcode scanning stay on your phone; only the barcode number leaves it. Form tracker video is analysed on your phone and is never uploaded. If you turn on clip recording, the clip is made and kept on your phone, and it only leaves the phone if you choose to save or share it.
Who processes your data
We use a small number of service providers to run the app. They process data on our behalf and only for the purposes below.
- Supabase hosts the database, photo storage and sign-in, on servers in the United States. Each account can read only its own rows and photos.
- Anthropic provides the AI features. When you ask for a meal estimate, a workout or nutrition advice, the relevant photo or log entries are sent to Anthropic's Claude models to produce the answer. Your email address is not sent. Anthropic's commercial terms do not allow this data to be used to train its models by default.
- Open Food Facts receives the barcode number when you scan a product, so it can return the nutrition label. Nothing about you is sent with it.
- Expo delivers app updates and receives basic device and app-version information to do so.
- Apple distributes the app and handles any purchases. We never see your payment details.
- RevenueCat keeps track of whether a subscription is active, using an anonymous account ID and Apple's purchase records. It does not receive what you log.
- Google, only if you choose to sign in with Google: it confirms who you are and gives us your email address.
- Vercel hosts this website and the form tracker pages.
We do not sell or rent your personal data, and we do not share it for advertising.
Health information
Body weight, measurements, sleep, meals, workouts and anything from Apple Health are sensitive. We use them only to provide the app's features to you. Buffd is a training and nutrition log. Its calorie, nutrition and body estimates are approximate, and nothing in the app is medical advice.
How long we keep it, and deleting it
- We keep your data for as long as your account exists.
- You can edit or delete individual meals, photos and check-ins in the app.
- To delete everything: open your Profile, then Account, then Delete account. This permanently removes your account, your logs and your photos from our systems. It cannot be undone.
Security
Data is encrypted in transit and at rest. Access rules in the database limit every account to its own data, and photos are stored in a private bucket. No system is perfectly secure, so we can't guarantee absolute security.
Your rights
Depending on where you live, you may have the right to access, correct, export or delete your personal data, and to object to some uses of it. You can do most of this in the app. For anything else, contact us and we'll respond within 30 days.
Age
Buffd is for adults aged 18 and over. We don't knowingly collect data from anyone under 18. If you believe a minor has created an account, contact us and we'll delete it.
Changes
If we change this policy in a way that matters, we'll update the date above and tell you in the app before the change takes effect.
Contact
Questions or requests about your data: email support@buffd.fit. More help is on the support page.