Privacy Policy

1. Who is responsible for your data

Babylon Optima BV is the controller for personal data processed through Every Single Session, referred to as ESS in this policy.

Babylon Optima BV, Oudegracht 297, 3511 PA Utrecht, the Netherlands. Chamber of Commerce number 94243914. You can contact us at [email protected].

2. Data we process

• Account data: email address, encrypted authentication credentials and account identifiers.
• Profile data: your name and optional details such as height, weight, country and profile photo, plus any date of birth you previously supplied.
• Training data: routines, folders, exercises, workouts, sets, repetitions, weight, RPE, duration, notes, personal records and training history.
• Product analytics: screen views, onboarding choices, routine changes and workout summaries, including exercise counts, duration and training volume. When analytics is configured, these are linked to your ESS account identifier when signed in and to device identifiers, including Apple's identifier for vendor. Analytics also receives device and app information and your IP address, which can be used to derive approximate location.
• Diagnostics: crash, error, performance, device, operating system and app-version information. Reports can include your ESS account identifier when signed in. We disable the provider's default collection of personal information and scrub common personal-data patterns from error text; this does not make reports anonymous.
• Purchase data: product and transaction identifiers, purchase history and subscription status for ESS Premium, linked to your ESS account identifier. We store transaction references and server-verified Premium access with your ESS account. This also applies to test purchases. Apple handles payment; ESS does not receive your payment-card details.
• Support data: information you choose to include when you contact us.

ESS does not use advertising identifiers for product analytics. We do not sell personal data and do not use your training data for third-party advertising.

3. Why we process data

• Provide the service: create your account, save and sync training data, calculate progress and provide exports. This is necessary to perform our agreement with you.
• Keep ESS reliable and secure: prevent abuse, investigate errors, protect accounts and maintain the service. We rely on our legitimate interests in operating a safe and dependable product.
• Improve the product: understand feature use and improve flows through limited product analytics. We rely on our legitimate interests, balanced against the limited nature of the data.
• Meet legal obligations: retain or disclose information when applicable law requires it.
• Respond to you: handle support and privacy requests. This may be necessary to perform our agreement, meet a legal obligation or serve our legitimate interests.

We use purchase records to verify Premium access, support purchase restoration and understand subscription activity.

4. Service providers

We use specialist providers to operate ESS:

• Supabase: authentication, database, server functions and file storage.
• Amplitude: limited product analytics when configured.
• Sentry: crash, error and performance monitoring when configured.
• Apple and RevenueCat: Apple processes App Store purchases. RevenueCat processes purchase history and subscription status for verification, restoration and subscription analytics, using your ESS account identifier.
• Expo and EAS: app build, update and distribution infrastructure.
• Cloudflare: delivery and security for this website.

Providers process data under their own security and retention controls and our contractual arrangements. Some processing may take place outside the European Economic Area. Where required, we rely on an adequacy decision or approved safeguards such as Standard Contractual Clauses.

5. Retention

Core account and training data is kept while your account is active. If you delete your account in ESS, the active account, training records and uploaded profile image are scheduled for permanent deletion. The app also clears your sign-in session and account-linked local training data. A preference recording that you have seen the introductory tour may remain on that device.

Limited records may remain temporarily in protected backups, security logs or processor systems until their normal retention cycle ends, or longer if required by law. Product analytics, diagnostic and purchase providers may retain historical records, including account identifiers, under their configured retention periods. Deleting your ESS account does not automatically delete records held by Apple or RevenueCat.

6. Your choices and rights

Depending on your location, you may have rights to access, correct, export, restrict or delete personal data, object to certain processing and lodge a complaint.

• Edit profile and training records directly in ESS.
• Export completed workout data as CSV or JSON from Profile, Settings, Export data.
• Delete your account from Profile, Settings, Delete account. Re-entering your password is required and the action cannot be undone.
• Deleting your ESS account does not cancel an Apple subscription. Manage or cancel it in your Apple Account subscription settings.
• Email [email protected] for any other privacy request.

In the Netherlands, you can also complain to the Dutch Data Protection Authority.

7. Security

We use encryption in transit, access controls, row-level database policies, authenticated server operations and monitoring to protect data. No online service can guarantee absolute security, so please use a unique password and keep your device secure.

8. Children

ESS is not intended for children under 16. We do not knowingly create accounts for children under 16. Contact us if you believe a child has provided personal data.

9. This website

This marketing website does not use advertising or analytics cookies. When you follow an email link, your email application handles the message and shares only the information you choose to send.

10. Changes and contact

We may update this policy when ESS or applicable law changes. The effective date above shows the latest revision. Material changes will be communicated in the app or by another appropriate channel.

Questions or requests can be sent to [email protected].