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Privacy Policy

Last updated: February 2026

This Privacy Policy explains how we collect, use, store, and protect your information when you use Sulu.

We’ve written this in plain language on purpose. If something isn’t clear, that’s on us — not you.

1. What this app does

Sulu is a personal tracking and reflection tool.

It allows you to record symptoms and note changes over time, based on what you choose to log. It presents summaries and visuals of your own entries so you can review them yourself or share them with a healthcare professional if you choose.

The app does not diagnose medical conditions, provide medical advice, or recommend treatment.

2. Information we collect

We collect only the information needed for the app to work.

Information you provide

  • the symptoms you choose to track
  • daily symptom ratings you enter
  • change markers you select (such as stress or illness)
  • dates and times of your entries
  • optional exports you generate

You decide what to enter. You can leave entries blank or stop using the app at any time.

Account information

If you create an account, we collect:

  • your email address
  • basic account identifiers needed to sign you in

We do not collect:

  • your name
  • your address
  • your payment details (unless added later and clearly disclosed)
  • information from your contacts
  • information from other apps or devices

3. Health-related information

Some of the information you choose to enter may relate to your health. This information is:

  • self-reported
  • entered voluntarily
  • used only to display your own records and summaries

The app does not interpret this information, draw medical conclusions, or make recommendations based on it.

4. How we use your information

We use your information only to:

  • display your daily entries, timeline, and weekly snapshots
  • generate summaries you request (including GP exports)
  • maintain and improve basic app functionality
  • ensure the app works securely and reliably

We do not use your information to:

  • provide medical advice
  • predict health outcomes
  • make automated decisions about you
  • target advertising

5. Sharing your information

With healthcare professionals

If you choose to export or share a summary, that information is provided for discussion only. How a healthcare professional uses or interprets that information is outside our control and part of their professional judgement.

With third parties

We do not sell your data.

We may share limited information with trusted service providers who help us operate the app (such as hosting or analytics services), but only for technical purposes, under confidentiality obligations, and to the minimum extent required.

We do not allow third parties to use your information for their own purposes.

6. Data storage and security

We take reasonable steps to protect your information, including secure storage, access controls, and industry-standard safeguards appropriate to the size and nature of the app.

No system is completely risk-free, but we aim to handle your information with care and restraint.

7. How long we keep your data

We keep your information only for as long as you choose to use the app. You can delete individual entries or delete your entire account at any time.

When you delete your account, your data is permanently removed from our systems, subject to any legal or operational retention requirements.

8. Your choices and rights

Depending on your location, you may have the right to access, correct, export, or delete your data. You can manage most of these directly in the app settings.

If you need help, you can contact us using the details below.

9. Children's privacy

This app is not intended for children.

We do not knowingly collect personal information from anyone under the age of 16. If you believe a child has used the app, please contact us so we can remove the data.

10. International users

Your information may be stored or processed in countries other than where you live. Where this happens, we take reasonable steps to ensure your information is protected in line with this Privacy Policy.

11. Changes to this policy

We may update this Privacy Policy from time to time. If we make material changes, we will let you know through the app or by other reasonable means. Continued use of the app after an update means you accept the revised policy.

12. Contact us

If you have questions about this Privacy Policy or how your information is handled, you can contact us at: