Cookies on Kythene

We use cookies and similar technologies for the things below. You can accept all, reject everything except what's essential, or pick what you're OK with.

Preferences
Remembers things like your last workspace and how you had a list sorted. Improves the experience but the site works without.
Improvement
Anonymous usage measurement so we can fix bugs and prioritise work.
Marketing
Lets us measure whether ads we run send people who actually use the site. We don't share personal data with advertisers.

Read our cookies policy and the privacy policy. California residents: Do Not Sell or Share My Personal Information.

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Privacy policy

Last updated: 4 August 2026

Kythene (the "Company" or "we") take your privacy very seriously. Our philosophy is to have the smallest privacy footprint possible and to be open, transparent and decent in how we operate with your data.

Kythene is a trading name of Tamperan Ltd, a company registered in England and Wales (company number 17324867), whose registered office is at Piccadilly Business Centre, Aldow Enterprise Park, Manchester M12 6AE. Tamperan Ltd is the data controller for the personal data described in this policy.

The purpose of this policy is to describe what information we collect and hold, and what we do with it.

Applicability

This policy applies to all visitors to our website, and all accounts.

By submitting your information through our website or software you agree to the terms of this policy and expressly consent to the collection, use and disclosure in accordance with this policy.

Compliance

We are compliant with, and operate within the terms of, the GDPR, CCPA and other relevant legislation.

Part of this compliance includes your right to access (and request removal of) any data we hold about you. If you wish to make such a request, please contact us via our contact form. Requests will be handled in compliance with relevant legislation.

Information we collect & how it is used

Product analytics

We use PostHog for product analytics, to understand how the product is used so we can improve it. This happens two ways:

  • On our website, an analytics script may record basic usage such as page views and feature interactions. It loads only with your consent, which you can manage at any time via your cookie settings.
  • In the application - including the CLI and assistant (MCP) access, which have no web page to consent through - we record a small set of server-side product-usage events (for example when work is published, recalled or remembered). These carry only structural metadata (counts, timings, and which features were used) and never the content of your memories, artifacts or search queries. They are pseudonymous, tied to your account id, and used solely to understand activation and product usage - never sold, and never used for advertising profiles.

Your online account

When you sign in or create an account you use a 3rd party sign-in (e.g. GitHub, Google, Apple, Microsoft) that you already have and which is governed by the 3rd party's terms.

Through that sign-in, we collect only basic profile information (e.g. name, email, locale, URL to avatar image) which you consent to via your sign-in provider at the point of signing in. We retain this information for the life of your account with us.

You may provide further details in your online account as part of using the tool. This information is held securely and not disclosed to 3rd parties.

Subscriptions & payments

We use a reputable 3rd party payments processor and we do not collect, hold, store nor have access to your payment details.

We do collect and retain records relating to any payments or subscriptions (e.g. amount paid, when, what for) for the purposes of administering your account and subscription, and for administering our business as required by law.

Self-host licence keys

If you buy a self-host licence, we issue you a signed licence key. That key is a small, readable token that carries your business contact details - contact name, work email, company name and company URL - so that the software you install can identify who it is licensed to and configure itself, and so a key can be traced back to the account it was issued to.

These are business contact details only; a licence key never contains a password, a card number, or any other secret. A licence key is readable by anyone who holds it, so please treat it as you would any other business credential and share it only within your organisation. We retain the licence record (including these contact details) for as long as the licence is active and for as long afterwards as we are required to keep business records. You can review and correct these details from your account at any time; a corrected key is re-issued automatically.

3rd party integrations

You may choose to use a number of 3rd party integrations in your use of the software, e.g. for advertising or social sync. Any such activity by you is at your discretion and is bound by the terms you agree with the 3rd party.

Anonymous aggregated data

We reserve the right to share anonymous aggregate data publicly. Such disclosure will be aggregated and anonymous and not contain sufficient detail to identify any customer.

Disclosure

We do not disclose your data to any third party except as expressly outlined in this policy, or with your explicit consent, or for these limited circumstances:

  • to protect, enforce, or defend the legal rights, privacy, safety or property of the Company, our affiliates or their employees, agents and contractors (including enforcement of our agreements and Terms of Use)
  • to protect against fraud
  • to comply with the law, where we are obligated to disclose such data to a government or law enforcement
  • to respond to valid requests from government and public authorities

Such disclosures, if made, may be outside your country of residence.

AI

Your data is not used to train AI models, nor is it disclosed to any AI provider, except as required to deliver features you actively use (such as keyword analysis), and then only the data necessary for that feature.

Location

Any information you provide to us will be stored and processed on secure servers.

Marketing

If you consent, we may periodically contact you electronically to update/inform you about new or exciting developments relating to Kythene or new products we create. You can manage your consent online in your profile.

We do not disclose, nor sell access to, your data to any third party for any marketing purposes besides what you may opt-in and consent to.

Cookies

When you visit our website we may set a cookie for the sole purpose of maintaining your authenticated login session with us.

We only use analytics or advertising cookies with your consent, which you can manage at any time via your cookie settings. We do not use tracking cookies without your consent.

Contact

For any privacy questions or concerns please contact us via our contact form or by email at [email protected]

Changes to this policy

This policy may be updated from time to time. Any changes become effective at the time they are published.

We will not make changes that materially affect the privacy of your data without giving advance warning and/or the ability to opt in/out of the change.