Privacy Notice

Last updated: March 2026

Short version: Marky Mark does not create accounts or collect personal information. Conversations are stored on our server to allow sessions to resume, and are used to improve the tutoring experience. Do not include personal information in your messages.

Who this is for

Marky Mark is a free maths tutoring tool aimed at GCSE students (typically ages 14–16). You can use it without creating an account or providing any personal information.

What data we store

We store two types of data:

Your browser (localStorage): Your conversation list and session identifiers are stored in your browser. This data never leaves your device and is only used to display your chat history in the sidebar.
Our server: The content of your messages and the tutor's replies are stored in a database on our server. This allows conversations to resume after you return, and allows us to review sessions to improve the quality of tutoring. Sessions are identified by a randomly generated ID — not by your name or any personal information.

How we use conversation data

We may read stored conversations to:

Understand which maths topics students find difficult
Identify where the AI tutor gives unhelpful or incorrect responses
Improve the prompts and teaching approach over time

We do not share conversation data with third parties or use it for advertising.

What we don't collect

No name, age, email address, or any other personal information.
No accounts or sign-up — you use Marky Mark anonymously.
No advertising or marketing tracking.
No cookies beyond what your browser uses by default.

Third-party AI service

Marky Mark uses a third-party AI model (Google Gemini) to generate responses. The content of your messages is sent to that service to produce the tutor's reply. We recommend you do not include sensitive personal information in your messages.

Note for parents and guardians

Marky Mark is designed for use by secondary school students. No registration is required and no personal data (name, age, email) is collected. Conversations are stored on our server linked only to a randomly generated session ID. If you have concerns about a specific session, contact us and we can delete it.

How to delete your data

You can delete individual chats from the sidebar inside the app — this removes them from your browser. To request deletion of server-stored conversations, contact us via the link below. To remove browser-stored data, clear your browser's site data: Settings → Privacy → Clear browsing data → Cookies and site data.

Changes to this notice

If we change how data is handled, we will update this notice and note the date at the top.