Volx helps you track your training with progress photos, measurements and
personalised workout plans. This policy explains exactly what we collect, why, who can see
it, and how to delete it.
The short version. We don't sell your data. We don't show ads. There is no
analytics or tracking software in this app. Your progress photos have faces automatically
blurred before they are ever saved, and nobody sees your measurements unless you explicitly
turn sharing on. You can delete your account — and everything in it — from inside the app.
What we collect
Account: your email address, a username, and a password (stored only as a
secure one-way hash — we never see or store your actual password).
Profile: optional display name, "about" text, profile picture, sex, date of
birth and height. Sex, age, height and weight are used to estimate calorie targets.
Health & fitness: check-ins (bodyweight, body-fat percentage, tape
measurements), goals in your own words, generated workout plans, workouts you log, and food
entries with calories.
Streaks and milestones: which weeks you trained, the milestones you've
earned, and — if you pause your streak — the optional note you write about why, such as an
injury. That note is only ever shown back to you: it is never sent to a trainer, a friend,
or our AI provider, and nothing in the app displays it to anyone else.
Photos: progress photos you take, and a profile picture if you add one.
If you use trainers or the community: connection requests, messages you send,
appointments, and reviews you write.
Notifications: if you allow push notifications, we store the notification
token your device is reachable at, so we can alert you about things like a friend request or
a message. It identifies the device, not you personally, and it is deleted when you sign out
or turn notifications off. We do not use it for anything else.
How your photos are handled
Progress photos are face-blurred before they are stored. The blurring happens on
our server as part of saving the photo. If the blur step fails for any reason, the upload is
rejected and nothing is stored.
Your profile picture is not blurred — it's a normal profile photo, and it's shown
to people you connect with. Don't use it for a progress photo.
We work out where your body is in the photo — the position of your
shoulders, hips and knees — so the muscle-group picker can put its labels on the right
part of you. This happens on our own server, in the same step that blurs your face.
Only those positions are kept; the calculation never leaves our servers, and it is
never sent to our AI provider or anyone else.
Progress photos are never posted publicly and are never used to train any AI model.
How AI is used, and what it receives
Three features send information to our AI provider (Anthropic) to produce a result for you.
Each one sends only what that feature needs, and nothing is used to train anyone's model.
Building a workout plan. We send the goal you typed, plus your sex, age,
height and most recent bodyweight. Plans can only use exercises from our own exercise
library — the AI cannot invent exercises.
Estimating calories from a description. When you tap “Estimate calories with
AI”, we send the meal description you typed and nothing else. The estimate is a starting
point you can edit before saving.
Your monthly progress summary. We send the change in your numbers
between check-ins — for example “chest +1.2 cm, bodyweight −0.4 kg over 30 days” — so the
summary can describe what moved. We do not send your full measurement history.
Your progress photos are never sent to the AI provider, or to anyone else. The
monthly summary is written from your measurements alone, never from an image. We also never send
your name, email, username, or messages.
If you would rather not use these features, you can skip them: don't create goals, use the plain
calorie box instead of the AI estimate, and the rest of the app works normally.
Who can see your information
By default, only you.
A trainer can see your goals, check-ins and calories only after you request them
as your trainer, they accept, and data sharing is on. You can switch sharing off at any time,
and they immediately lose access.
Workout friends see your profile and what you're training. They can only see your
check-ins and measurements if you specifically turn on progress sharing for that person.
Messages are visible to you and the person you're messaging. They are not
end-to-end encrypted, so please don't send anything you'd consider highly sensitive.
What we never do
We do not sell or rent your personal information.
We do not show advertising or share your data with advertisers.
We do not include analytics, tracking, or third-party marketing software.
We do not track you across other apps or websites.
Where your data is kept
Your account data is stored in a managed PostgreSQL database hosted by Render, and your photos
in object storage provided by Cloudflare (R2). Both act on our behalf and only to run Volx. Access
is restricted and traffic is encrypted in transit. No system is perfectly secure, so we can't
guarantee absolute security.
The companies that process data for us are: Render (hosting and database),
Cloudflare (photo storage), Anthropic (the AI features described
above), and Expo, which delivers push notifications to your device via Apple.
None of them are permitted to use your information for their own purposes.
Deleting your account
Open Profile → Delete account, confirm with your password, and we permanently
delete your account along with your check-ins, measurements, goals, plans, logged workouts, food
entries, messages, appointments, connections — and the image files for your progress photos and
profile picture. This is immediate and cannot be undone.
Copies may persist briefly in routine encrypted backups before being overwritten. If you'd rather
we handle deletion for you, email us at the address below.
Children
Volx is not intended for children under 13, and we do not knowingly collect information
from them. If you believe a child has created an account, contact us and we'll remove it.
Your rights
Depending on where you live, you may have the right to access, correct, export or delete your
personal information. You can edit most of it in the app, delete everything from Profile, or email
us and we'll help.
Health disclaimer
Volx is not a medical device and does not provide medical advice, diagnosis or treatment.
Calorie targets and workout plans are general estimates. Talk to a qualified professional before
starting a new exercise programme, especially if you have an injury or medical condition.
Changes to this policy
If we make meaningful changes we'll update the date at the top of this page and, where
appropriate, tell you in the app.