Privacy Policy

This policy explains how Lexivelle ("we", "our", or "us") handles information when you use our vocabulary learning app and contact our support team. Some features work on your device; account synchronization, shared classrooms, purchases, and advertising also use the services described below.

1. Account and learning information

• Account: When you register or sign in, we process your email address, authentication information, account identifier, and the name you provide. We use Supabase to authenticate your account and store account records.
• Learning: Your language choices, word progress, favorites, known and difficult words, practice time, goals, streaks, and progress totals support your learning experience. Custom word lists may include the names, words, and translations you enter.
• Local storage and synchronization: Settings, local profiles, and unfinished practice sessions are stored on your device. Supported data for a signed-in account's primary profile can sync through Supabase. Additional local profiles and all unfinished-session details are not a promise of cloud backup. Using guest mode does not prevent the purchase or advertising services below from processing their own data.
• Classrooms and rankings: If you use shared learning features, your display name, membership or teacher role, and learning summaries may be visible to other participants. Shared classroom names, goals, word lists, and progress are stored to provide these features. Only enter information you intend to share and have permission to provide.
• Support: If you email us, we receive your email address, message, and any information or attachments you choose to send. Please do not send passwords or payment-card details.

2. Purchases and subscriptions

Apple processes iOS payments. Lexivelle uses RevenueCat to retrieve products and prices, validate purchases, restore purchases, and determine Premium access. RevenueCat processes purchase and subscription history, product and transaction identifiers, subscription dates and status, and an app customer identifier. For signed-in users, that identifier is linked to the Lexivelle account; guests can have an anonymous customer identifier. Subscription status may also be stored with your account to keep access consistent.

Purchase information is used for app functionality, fraud prevention, subscription support, and subscription reporting and analytics. We do not receive your full payment-card details from Apple. See RevenueCat's privacy policy and Apple's privacy policy.

3. Advertising, consent, and identifiers

The free iOS app can display Google AdMob advertisements. The app requests non-personalized ads and checks the Google User Messaging Platform (UMP) consent status before requesting ads. A verified Premium entitlement prevents new ad requests. Non-personalized advertising does not mean that no information is collected.

Google's advertising and consent services may process IP addresses and approximate location derived from them, device or app identifiers, ad impressions and interactions, other product interactions, crash reports, performance information, and other diagnostic data. These are used to serve and measure ads, manage privacy choices, prevent fraud, and operate or improve the services. Lexivelle does not request precise GPS location for vocabulary practice.

Regional consent or opt-out messages may be shown by Google. Where required, you can reopen Ad privacy options from your Profile. Available options depend on your region and the consent service. On iOS, the app checks Apple's tracking permission before initializing advertising and asks for permission when the system allows a request. If permitted, Google may use the advertising identifier for advertising measurement across apps; Lexivelle still requests non-personalized ads. Denying tracking permission does not remove the free app's ads. You can review the permission in Settings > Privacy & Security > Tracking. Changing an ad preference does not erase data already processed by a provider.

See Google's privacy policy and how Google uses information from apps that use its services. We do not send your custom word lists or email address as ad targeting parameters in our ad requests.

4. How information is shared

We use Supabase for authentication and cloud storage, RevenueCat for purchase validation and subscription management, and Google AdMob and UMP for advertising and privacy choices. These providers process information needed for their services, as described above. Information that you choose to share in classroom features is also available to the relevant participants. We may disclose information to respond to a valid legal request or protect the service against fraud and misuse.

Our providers can process information in countries other than your own. Their processing and retention practices are described in their policies. See also Supabase's privacy policy.

5. Retention and account deletion

We retain account and synchronized learning records while they are needed to provide your account and its features. You can request account deletion from Profile > Delete account. For some Sign in with Apple accounts, you may need the latest app version and a new Apple identity confirmation before deletion can proceed. Once the server confirms deletion, account-owned records and that account's local app data are removed. Shared classrooms and lists used by other participants may remain; the deleted classroom owner's account link and displayed owner name are removed. Minimal deletion markers can remain on the device to prevent old shared caches from restoring the deleted identity; they contain no name or email. Information other people already copied is outside our control.

Account deletion also requests removal of the RevenueCat customer record associated with your verified account, when one exists. RevenueCat processes accepted deletion requests asynchronously; an accepted request is not confirmation that every provider copy has already been erased. If we cannot safely match the customer to your account or a required service is unavailable, the app does not report account deletion as complete. Contact iletisim@lexivelle.com if you need help, including with guest purchase records or information held by other providers. Provider backups, security records, and transaction records may have separate retention requirements. We do not promise one deletion deadline for every system.

Deleting an account or RevenueCat customer record does not cancel an Apple subscription. Manage or cancel it in iPhone Settings > your name > Subscriptions, or use Apple's subscription management page. Apple controls its transaction records. Restoring purchases or using a subscription again may recreate the records necessary to provide subscription access.

6. Your choices and requests

You can change available profile and app settings, manage notification permissions in device settings, and use the ad privacy choices described above. Local reminders are scheduled on your device. Pronunciation uses the device's speech service; the app does not record your voice for vocabulary practice.

For access, correction, deletion, or questions about your information, contact us below. We may ask for enough information to verify that a request belongs to you. Do not send someone else's personal information when creating shared word lists or contacting support.

7. Security

We use authenticated access and encrypted network connections for account and synchronization services. Authentication is handled by Supabase. No storage or transmission method can be guaranteed completely secure. Protect your device and account credentials, especially if you share a device.

8. Children and shared learning

A parent or guardian who believes a child has provided personal information can contact us to request review or deletion. Teachers and other classroom organizers should avoid entering unnecessary personal information about learners and ensure that they have permission to share the information they provide.

9. This website

When you open this website, its hosting service processes the network information needed to deliver the page. The site loads fonts from Google Fonts, which requires a request to Google's servers. Links to Apple, Google, RevenueCat, or Supabase open services governed by their own policies.

10. Changes and contact

We update this page when our practices change. The date above identifies the latest revision.

For privacy questions or requests, email iletisim@lexivelle.com.