Privacy policy

Privacy Policy

Crystal Consultant / Crystal AI

Last updated: 02/01/2026

Crystal Consultant (“we”, “us”, “our”) respects your privacy and is committed to protecting your personal data. This Privacy Policy explains what data we collect, why we collect it, and how we use and protect it.

1. Who we are

Crystal Consultant is a mobile application designed to help users learn about crystals and wellbeing.

If you have any questions about this policy or your data, you can contact us at:

Email: crystalconsultantapp+contactus@gmail.com

2. What data we collect

We only collect data that is necessary to operate and improve the app.

a) Email address (optional)

If you choose to provide your email address, we collect and store:

Your email address
Your consent to receive marketing emails
The date and time you gave consent
The platform you are using (iOS or Android)

Providing your email address is optional.

b) Anonymous usage analytics

We collect anonymous usage data to understand how the app is used, such as:

Which screens are viewed
Which features are used
App interactions (e.g. submitting an email)

This data does not directly identify you and is linked only to an anonymous app installation ID.

3. How we use your data

We use your data for the following purposes:

To send you updates, tips, and marketing emails (only if you opt in)
To improve the app’s features and user experience
To understand how the app is used overall

We do not sell your data.

4. Legal basis for processing (GDPR)

Under UK and EU GDPR, we process your data based on:

Consent – when you voluntarily provide your email address and agree to receive marketing communications
Legitimate interest – for anonymous analytics to improve the app

You may withdraw your consent at any time.

5. Where your data is stored

Email addresses and consent data are securely stored in Google Firebase (Firestore).
Anonymous analytics data is processed by Amplitude, an analytics service.

All reasonable technical measures are used to protect your data.

6. How long we keep your data

Email addresses are kept only for as long as we need them for marketing purposes or until you ask us to delete them.
Anonymous analytics data may be retained for longer to help us understand long-term usage trends.

7. Your rights

Under GDPR, you have the right to:

Request access to the personal data we hold about you
Request correction of inaccurate data
Request deletion of your personal data (“right to be forgotten”)
Withdraw consent for marketing at any time

To exercise these rights, contact us at the email address above.

8. Marketing emails & opt-out

If you opt in to receive marketing emails:

You can unsubscribe at any time using the link in our emails
Or by contacting us directly

Unsubscribing will not affect your ability to use the app.

9. Children’s privacy

Crystal Consultant is not intended for children under the age of 13, and we do not knowingly collect data from children.

10. Changes to this policy

We may update this Privacy Policy from time to time.
If we make significant changes, we will update the in-app policy accordingly.

11. Contact us

If you have any questions about this Privacy Policy or how your data is handled, please contact: