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knot / Data Safety

Account & Data Deletion

You have complete ownership and control over your knot account and your study data. Whether you want to delete your account, remove your cloud backups, or request full deletion of all associated data, we make the process clear, permanent, and accessible from within the app or directly through this page.

Applies to
knot for iOS & Android
Effective
17 October 2026
Version
1.0
Publisher
Numinous Lab

On this page

  1. 01 Deleting your account in the knot app
  2. 02 Requesting data deletion without the app
  3. 03 What data is permanently deleted
  4. 04 Data retention and legal exceptions
  5. 05 Deletion timeframe
  6. 06 Contact and assistance

01

Deleting your account in the knot app

If you have the knot app installed on your device, you can delete your account and all associated cloud data directly from within the app at any time:

  1. Open knot on your iOS or Android device.
  2. Open the side drawer menu or profile menu and navigate to Settings.
  3. Scroll to the Account & Sync section.
  4. Tap Delete Account (or Delete Cloud Data).
  5. Confirm the prompt. Your account credentials, authentication session, and all cloud backup archives will be immediately and permanently removed from our servers.
On-device data note: Because knot is an offline-first app, deleting your cloud account removes your data from our servers. To also remove local offline notes and cards stored on your phone, you can tap Clear Local Database in Settings or simply uninstall the knot app.

02

Requesting data deletion without the app

If you have uninstalled knot, no longer have access to your mobile device, or prefer to submit a request on the web, you can request full account and data deletion via email:

  • Email: Send an email to support@numinouslab.com
  • Subject line: Delete Knot Account and Data
  • Verification: Please send the email from the email address registered with your knot account, or include your account identifier so we can verify ownership.

You may also specify whether you wish to:

  • Delete everything: Full removal of your account, email address, authentication records, and all cloud-stored study archives.
  • Delete study data only: Purge all cloud backup archives, notes, and study history while keeping your account login active for future use.

03

What data is permanently deleted

When an account deletion request is processed, the following information is permanently erased from our production databases and storage systems:

  • Account Credentials: Your email address, encrypted authentication tokens, and user profile ID.
  • Study Materials: All synchronized notes, formula cards, study decks, recall logs, ratings, and review intervals.
  • Cloud Backups: All encrypted backup archives and snapshot files stored in our cloud storage buckets.
  • Product Analytics & Crash Logs: Any first-party diagnostic and analytics identifiers tied to your account ID.

04

Data retention and legal exceptions

We do not retain your personal data or study content after your account is deleted, except in the following limited situations required by law:

  • Financial Records: If you purchased a subscription (such as knot Pro), transaction receipts, order numbers, and tax invoice metadata processed through Google Play or Apple App Store are retained for the statutory period required for tax, accounting, and anti-fraud compliance (typically up to 7 years). We never process or store credit card numbers.
  • Legal Disputes: Records strictly necessary to defend legal claims or comply with court orders may be retained until the resolution of such proceedings.
  • Backup Rotation: Routine encrypted database system backups are overwritten on a rolling 30-day lifecycle, after which data cannot be recovered.

05

Deletion timeframe

In-app deletion: Requests initiated inside the app take effect immediately for active sessions and cloud data.

Email requests: Deletion requests submitted via email to support@numinouslab.com are verified and completely processed within 30 calendar days of receipt. We will send you a confirmation email once your data has been permanently deleted.

06

Contact and assistance

If you have any questions about how your data is handled or need assistance with deleting your account, please reach out to our privacy and support team:

  • Email: support@numinouslab.com
  • Privacy Policy: knot Privacy Policy
  • Terms of Use: knot Terms of Use
Also readknot Privacy Policy Questions about this documentsupport@numinouslab.com
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