Privacy policy
Last updated 4 November 2026
The short version. repchek reads your camera on your device to count reps and check your form. Your video is not uploaded. We keep your email and your workout results so your account works. We do not sell your data and we do not show ads. If you subscribe to Premium, Polar takes the payment and we never see your card number.
Who we are
repchek is run by Francis Ndungu. This policy covers the website at repchek.fit and the app at app.repchek.fit. For any question about it, write to hello@repchek.fit.
What we collect
- Account details. Your email address. If you sign in with Google, we also receive your name and profile picture from Google.
- Workout results. The exercise, sets, reps, which reps had form faults, and the date. These are linked to your account when you are signed in.
- Usage and device data. Pages visited, simple events such as starting or finishing a session, browser type, and your approximate country. We use this to see what works and what breaks.
- Subscription details. If you subscribe to Premium, we receive from Polar whether your subscription is active, when it renews or ends, and a reference that links it to your account. Polar collects your payment details, billing name and address, and tax information itself. We do not receive your card number.
- Messages. If you email us, we keep the email and our reply.
Your camera
The camera feed is analysed on your phone or computer, in your browser. The video is not sent to our servers. If you turn on Record sets, the clips stay on your device and you choose whether to share them. If you use Share, the image goes where you send it through your device’s share menu.
How we use it
- To sign you in and keep your account secure.
- To save your workouts and show them back to you.
- To work out your progress, streaks and, for Premium, your charts and suggestions from your saved workouts.
- To switch Premium on and off to match your subscription.
- To send you the sign in code you ask for.
- To fix bugs and improve repchek.
- To answer your questions.
We only use your data for these reasons. We do not sell it, rent it, or use it for advertising.
Who handles your data for us
These companies process data on our behalf to run repchek:
- Supabase, for sign in and for storing your account and workouts.
- Resend, for sending sign in code emails.
- Google, if you choose to sign in with Google.
- Polar, for Premium payments. Polar is the seller of record, so it handles your payment, tax and receipts. Its own privacy policy applies to the details you give it.
- Vercel, for hosting the site and the app, and for basic usage statistics.
- Google Analytics, for usage statistics on repchek.fit.
These providers may store data in countries other than yours. We share only what each one needs to do its job.
Cookies and local storage
The app stores your sign in session and your settings, such as camera choice and coach voice, in your browser. This is needed for the app to work. Google Analytics on repchek.fit may set cookies to count visits. You can block or clear cookies in your browser settings. The app will still work, but you may need to sign in again.
How long we keep it
We keep your account and workouts until you ask us to delete them. After you ask, we delete them within 30 days. Backups may hold a copy for a short time longer. We may keep basic records we are required by law to keep. Polar keeps payment and tax records for as long as the law requires, even after your account is deleted here.
Your choices
You can ask us to show you the data we hold about you, correct it, or delete it. You can also ask us to stop using it in a particular way. Email hello@repchek.fit from the address on your account and we will reply within 30 days. You can sign out of the app at any time from More options.
Children
repchek is not for anyone under 16. We do not knowingly collect data from children. If you think a child has given us their data, email us and we will delete it.
Security
We use sign in codes, encrypted connections, and trusted providers to protect your data. No service is perfectly secure, so we cannot promise absolute security. If a breach affects you, we will tell you as the law requires.
Payments
Premium is paid through Polar, which acts as the seller of record. When you subscribe, you enter your card or payment details on Polar’s checkout page, not on repchek. We never see or store your card number. Polar tells us whether your subscription is active so we can switch Premium on or off.
You can cancel and see your receipts in the customer portal that opens from Manage subscription on your Profile.
Changes to this policy
If we change this policy in a way that matters, we will update the date above and tell signed in users in the app or by email.
Contact
Questions or requests: hello@repchek.fit.