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Privacy Policy

At tetr, we take your privacy seriously and are committed to transparency. If you have any questions, you are welcome to reach out through

By default, tetr does not provide the ability to create an account and consequently does not store nor have access to your user content and data. Your data is stored only locally on your device and features such as reminder scheduling and insight computations are all done locally as well.


While using the application and its services, we in some cases collect anonymized usage data, which is crucial for us to improve and understand user needs. This data includes activities like launching the app, tapping parts of the UI, in-app purchases, screen visits, session durations, and other interactions within the app. Please note that all this information is fully anonymized and aggregated, meaning it cannot be traced back to any specific user.

It’s important to understand that our application does not gather data such as the content of your messages, names, surnames, email addresses, photos, or anything other content you type in within the app. Your personal entries and memories remain entirely private and under your control.

Furthermore, we also collect crash and performance reports to enhance the stability and overall performance of the app, ensuring you have the best experience possible.

We use this data to improve our app and services, and we do not share it with any third parties beyond this purpose. We do not sell your data.

Support and Feedback

When you reach out to us for support through email or our customer support contact form, you are asked to input your email address. However, we solely use your email address to communicate with you regarding support, feedback, or essential information.

Newsletter and Product Update Emails

When you sign up for our newsletter or product updates, we collect your email address and other information which you choose to provide. We use this information to send you our newsletter and other relevant information. You can unsubscribe from our newsletter at any time by clicking the unsubscribe link at the bottom of the email.

Third-Party Services

We use third-party services to gather anonymous usage data and crash reports. These services include:

  • Amplitude. Data collected: app launch, screen visits, anonymized network identifiers, device identifiers, session duration, in-app purchases, and other interaction information within the app.
  • Sentry. Data collected: errors, crash reports and performance metrics.

No personal or message data is collected by these services. All data is fully anonymized and aggregated; it cannot be traced back to any specific user.

Changes to this Privacy Policy

We reserve the right, at our sole discretion, to modify or replace this Policy at any time. This page will be updated with any changes we may make to our privacy policy in the future. You should check this page from time to time and take note of any changes.