Data Privacy & Account Deletion

User Data Deletion Instructions

Effective Date: August 27, 2026 • Compliant with Meta Platform Policies, GDPR & CCPA

At Oslango, you maintain complete ownership and control over your personal information. In accordance with Facebook Platform Rules and international data privacy regulations, this page provides clear, step-by-step instructions on how to remove your data or delete your account at any time.

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Method 1 (Recommended for Facebook Login)

Remove Oslango Data via Facebook Settings

If you logged in to Oslango using Facebook Login, you can revoke access and trigger data deletion directly through your Facebook account settings:

  1. 1
    Open Facebook Settings:

    Log in to your Facebook profile. Click your profile icon at top right, go to Settings & Privacy, and select Settings.

  2. 2
    Navigate to Apps & Websites:

    In the left sidebar menu, locate and click on Apps and Websites (or visit Facebook Apps & Websites ).

  3. 3
    Find Oslango:

    In the list of connected apps, search for or click on Oslango.

  4. 4
    Click Remove:

    Click the Remove button. In the confirmation dialog, check the box to delete all associated permissions and historical links.

  5. 5
    Confirmation:

    Once removed, Facebook revokes all token access immediately. If you wish to also purge all local study records created prior to disconnection, you can additionally send a deletion request as described in Method 3 below.

Method 2

In-App Self-Service Account Deletion

You can delete your account and all associated data directly within the Oslango web application:

  1. 1
    Sign in to Oslango:

    Log in to your account at oslango.com.

  2. 2
    Open Account Settings:

    Click your profile avatar in the navigation bar and select Account Settings.

  3. 3
    Danger Zone & Delete Account:

    Scroll down to the Danger Zone section and click Delete Account.

  4. 4
    Confirm Deletion:

    Confirm the prompt. Your user profile, vocabulary cards, voice recordings, and learning history will be permanently deleted from active systems immediately.

Method 3

Request Data Deletion via Email Support

You can also submit a manual deletion request by sending an email to our Data Protection Team:

To: [email protected]

Subject Line: User Data Deletion Request - [Your Registered Email]

Required Details to Include:

  • Your registered email address or Facebook User ID.
  • A statement requesting complete account deletion or removal of specific datasets (e.g. voice recordings, practice logs).
Processing Time & Confirmation Code:

Our support team processes email deletion requests within 7 business days (and no later than 30 calendar days). Upon completion, we will reply with a unique Confirmation Code and status confirmation for your records.

What Data Is Deleted Upon Request?

When your deletion request is processed, the following categories of data are permanently purged:

Profile name, avatar, and authentication tokens
Facebook OAuth user ID and linked identity data
All voice recordings and speech evaluation files
FSRS flashcard retention intervals and review logs
Grammar Mind Map topic mastery and quiz history
Study timers, active streaks, and usage analytics

Backup Retention & Purging Schedule

While active database records are wiped immediately upon confirmation, encrypted automated disaster-recovery backup snapshots are cycled and permanently overwritten within a maximum retention window of 30 days.

Questions or Status Checks?

If you have questions regarding data deletion or wish to verify the status of a previous request, please contact our support team:

Support Email: [email protected]

Contact Page: Contact Us Page