Privacy policy

Effective date: 2026-08-04
Last updated: 2026-08-04

1. Introduction and controller

Senary Design ("Senary", "we", "us") operates the senary.design website and the Senary Design iOS application (together, the "Service"). Senary Design is the controller of the personal data described in this policy. For all matters concerning this policy, contact base@senary.design.

Nature of the service

Senary is a theoretical exploration combining your Human Design chart with your body signal data. It is not medical advice. It is not predictive of life events. We use planetary positions and your birth chart as a symbolic framework to surface patterns in your physical activity data. Treat insights as exploration, not prescription.

2. Definitions

In this policy:

(a) "Account" means a registered user account on the Service.
(b) "Research Data" means the records described in clause 3.4.
(c) "You" means the natural person whose personal data we process.

3. Data we process

3.1 Accounts. When you register an Account we process your email address, your password in protected form or your Sign in with Apple identifier, and the charts you save, including any birth data (date, time, and place of birth) you enter for chart calculation. Birth data is stored with your Account so that your chart can be shown to you and restored if you reinstall the app. Payments for web subscriptions are processed by Stripe; we do not receive full card numbers.

3.2 Beta waitlist. When you join the beta waitlist we process the name, email address, and date of birth you submit.

3.3 How research data is kept. Research records are kept with no names, no email addresses, no Apple IDs, and no dates, times, or places of birth.

3.4 Research Data. No Research Data is collected from anyone under the age of 16, in any of the categories below. From the moment you create an Account, if you are 16 or over, we collect as Research Data: (a) your chart's planetary activations, (b) the daily energy summaries the app computes on your device; and (c) your questionnaire answers. If you additionally enable data sharing in the app, we also collect the health measurements you allow the app to read (such as activity, sleep, and heart measurements) as recorded by your device, including measurements recorded before you enabled sharing. These records are not linked to your name, email address, or Apple ID. Your date, time, and place of birth are not stored in the research records.

3.5 Technical logs. Our servers record standard access information, including IP address, timestamp, and request path, when you use the Service.

3.6 The app also processes data solely on your device, including Apple Health readings. Data processed solely on your device is not transmitted to us except as described in clause 3.4.

4. Purposes and legal bases

4.1 Account data is processed to provide the Service to you. Legal basis: performance of a contract.

4.2 Waitlist data is processed to administer the beta programme. Legal basis: your consent.

4.3 Research Data is processed for a single purpose: research into how daily body measurements relate to planetary positions. Chart activations, daily energy summaries, and questionnaire answers are processed on the basis of the consent you give when you create an Account, where research participation is stated. Daily health measurements are processed only on your explicit consent, given when you enable data sharing in the app. You may withdraw at any time in Settings; collection stops immediately upon withdrawal, with the further effects described in clause 6.4.

4.4 Technical logs are processed to secure and operate the Service. Legal basis: our legitimate interest in the security and operation of the Service.

5. What we do not do

We do not use personal data for advertising. We do not sell personal data. We do not share personal data with data brokers or with any third party, except processors engaged to operate the Service, such as our hosting providers, acting on our instructions. Data you choose to send to a third party yourself, using a personal access token under section 8, is transmitted at your direction and is not sharing by us. We do not carry out automated decision-making that produces legal or similarly significant effects concerning you.

6. Retention

6.1 Account data is retained until you delete your Account.

6.2 Waitlist data is retained until the beta programme concludes or you request removal, whichever occurs first.

6.3 Research Data is retained for the duration of the research programme, subject to your choices in clause 6.4.

6.4 You can end research participation in three ways. (a) If you turn off data sharing in the app, collection stops. (b) If you ask us to delete your Account, by writing to base@senary.design, we delete it. (c) If you ask us to erase your Research Data, by writing to the same address, we delete the research records themselves entirely within 30 days.

6.5 Deleting health data in Apple Health, deleting the app, or replacing your device does not remove Research Data you have already shared. Those changes happen on your device and we cannot see them. If you want that data erased, write to base@senary.design and clause 6.4(c) applies.

6.6 Technical logs are retained on a short rotation and then deleted.

7. Your rights

7.1 Subject to applicable law, you have the right to request access to, rectification of, or erasure of your personal data, the right to restriction of processing, the right to data portability, and the right to withdraw consent at any time without affecting the lawfulness of processing before withdrawal.

7.2 You may exercise these rights through the controls described in clause 6.4 or by writing to base@senary.design.

7.3 You have the right to lodge a complaint with a supervisory authority.

8. Personal access tokens

8.1 You can generate a personal access token in the app. A token lets an AI assistant or other tool of your choice read your own data through our interface. A token reads only your records, is shown to you once at creation, and can be revoked by you at any time in Settings. A token can read your health measurements only while data sharing is enabled. Personal access tokens are available from the age of 16.

8.2 If you give your token to a third-party service, that service receives the data the token can read and handles it under its own terms, not under this policy. This happens only at your discretion. We do not send your data to any third-party AI service ourselves.

9. Security

We take reasonable technical and organisational measures to protect the personal data we process. If an incident affects your personal data, we will notify you and any authority the law requires us to notify.

10. International transfers

The Service is hosted on cloud infrastructure located in Australia. Where personal data is processed outside your jurisdiction, we rely on safeguards recognised under applicable law.

11. Children

The Service is not directed to children. You must be at least 13 to create an Account, and research participation is available from the age of 16, so no Research Data is collected from anyone younger. If you believe a child under 13 has given us personal data, contact base@senary.design and we will delete it.

12. Changes to this policy

We may amend this policy. The current version, with its effective date, is published at senary.design/privacy. Amendments take effect on the stated effective date.