Privacy Policy

This Privacy Policy describes how The Weekly Challenge (“we”, “us”, “our”), operated by Mohammad Sajid Anwar, handles information when you use our website at theweeklychallenge.org or our mobile application (“the App”).

We are committed to protecting your privacy and being transparent about how data is used. If you have any questions, contact us at mohammad.anwar@yahoo.com.

1. Website - Information We Collect

When you visit our website, the following data may be collected:

• Usage data - pages visited, time spent, referring URLs, browser type, and device information, collected anonymously via Google Analytics.
• Cookies - small text files placed on your device by Google Analytics to distinguish unique visitors and track sessions.
• IP address - this website is hosted on GitHub Pages. GitHub may collect IP addresses and server logs as part of their infrastructure. Google Analytics also anonymises IP addresses before processing.

We do not collect names, email addresses, or any personally identifiable information through the website unless you contact us directly via email.

2. Mobile App - Information We Collect

The mobile application does not collect any personal data. Specifically, it does not collect:

• Personal identification information (name, email, phone number)
• Location data
• Device identifiers or advertising IDs
• Usage analytics or behavioural tracking data
• Financial or payment information
• Camera, microphone, or contacts access

The App only fetches publicly available content from theweeklychallenge.org to display challenge information, blog posts, and community data. No user data is sent to our servers.

3. Cookies

Our website uses cookies solely for Google Analytics. These cookies include:

• _ga - distinguishes users. Expires after 2 years.
• _gid - distinguishes users. Expires after 24 hours.
• _gat - throttles request rate. Expires after 1 minute.

You can opt out of Google Analytics cookies at any time by installing the Google Analytics Opt-out Browser Add-on, or by adjusting your browser’s cookie settings. The mobile app does not use cookies.

4. Google Analytics

Our website uses Google Analytics (Universal Analytics, ID: UA-136524905-1). Google Analytics uses cookies to help us understand how visitors use the site. All data collected is aggregated and anonymous. We do not use it to identify individuals.

5. Third-Party Services

Our website and app may contain links to third-party services including GitHub, YouTube, PayPal, and Expo. These services have their own privacy policies which we have no control over.

6. Your Rights (GDPR)

If you are located in the United Kingdom or European Union, you have the following rights under the UK GDPR and EU GDPR:

• Right to access - request a copy of any personal data we hold about you.
• Right to erasure - request deletion of your personal data.
• Right to rectification - request correction of inaccurate data.
• Right to restrict processing - request that we limit how we use your data.
• Right to object - object to our processing of your data.
• Right to data portability - request your data in a portable format.

Since we collect very minimal data (primarily through Google Analytics), most requests will be directed to Google. To exercise your rights, contact us at mohammad.anwar@yahoo.com.

7. Data Retention

We do not store personal data on our own servers. Google Analytics data is retained for 26 months by default, after which it is automatically deleted.

8. Children’s Privacy

Our website and app are not directed at children under the age of 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us and we will delete it promptly.

9. Contributor Names, Pseudonyms, and Personal Data

By submitting a solution to The Weekly Challenge, contributors agree that their name or pseudonym, links to their solutions, blog posts, and any other information they choose to include in their submission may be published on the website (theweeklychallenge.org) and in the official mobile application. This includes display in leaderboards, contribution statistics, recap posts, and community pages.

Contributors who wish to have their information removed from the website or app may contact us at mohammad.anwar@yahoo.com and we will honour such requests promptly in accordance with your rights under the UK Data Protection Act 2018 and UK GDPR.

We display only information that contributors have voluntarily made public through their submissions. We do not publish private contact details or any information not provided as part of a challenge submission.

10. Intellectual Property

All solutions, blog posts, and other content submitted to The Weekly Challenge remain the intellectual property of their respective authors, unless the author has explicitly stated that their work is in the public domain or released under an open licence.

The Weekly Challenge does not claim ownership of any submitted solutions or associated content. By submitting, contributors grant The Weekly Challenge a non-exclusive, royalty-free licence to display and link to their work on the website and in the mobile application for the purposes of running the challenge and showcasing community participation.

11. Challenge Sources

Challenge tasks published each week are sourced by the organiser, primarily by searching publicly available resources including Google Search and other open references. Unless a challenge task has been explicitly suggested or co-created by a team member or community contributor (in which case full credit is given), the challenges are independently composed.

The Weekly Challenge does not claim ownership of any underlying mathematical concepts, algorithms, or problem types that may appear in the tasks, as these are part of the wider public domain of computer science and mathematics.

12. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be published at this URL with a revised date at the top. Continued use of our website or app after changes constitutes acceptance of the updated policy.

13. Contact

• Name: Mohammad Sajid Anwar
• Email: mohammad.anwar@yahoo.com
• Website: theweeklychallenge.org
• Location: London, England, United Kingdom

Effective date: March 2026