Privacy Policy
Last updated: 2 October 2026
This policy explains what the Stella mobile application (the App, we, us) collects, why, and what you can do about it. The App is published and operated by an independent developer, reachable at wiebkedevscontact@gmail.com.
Short version: the App has no sign-up. It stores the details you type during onboarding and in your journal so it can write personalised sleep stories and affirmations for you. You can erase all of it from inside the App at any time, and nothing is ever sold.
1. There is no account to create
You never give us an email address or a password. Instead, your content is held against an anonymous identifier associated with your device, which is how it is still there when you come back. It is not linked to your name, your Apple ID or any directory of people.
2. What we collect
Information you provide
- Onboarding answers. Your first name and the other details you choose to give, which may include your partner's name, your city, your work, the home or life you are picturing, and your goals.
- People who matter to you. Names and short descriptions you add for people in your life, and the names and ages of children if you add them.
- What you write in the App. Gratitude journal entries and manifestations.
- Preferences. Voice, background sound, reminders and similar settings.
Collected automatically
- Identifiers. The anonymous account identifier described above, and a device identifier provided by Apple that is specific to your device and this developer.
- Usage. Which stories and affirmations you open, listening progress, favourites, streaks, and which screens you reach. We use this to build your library and to understand which parts of the App are worth improving.
- Subscription status. Whether a subscription or free trial is active, its plan and its renewal state. Apple does not give us your payment details, and we never see your card.
- Technical data. Device model, operating system version, app version, language and approximate country, plus crash and performance diagnostics.
Only with your permission
- Advertising identifier. If you allow tracking when iOS asks, we and our marketing measurement provider use Apple's advertising identifier to work out which advertisement led you to the App. If you decline, the App still works in full and the identifier is not read. You can change your mind at any time in iOS Settings → Privacy & Security → Tracking.
What we never collect
The App does not request your contacts, photos, microphone, camera, precise location, health data or calendar.
3. Why we use it
| Purpose | What it relies on |
|---|---|
| Writing your personalised stories, affirmations and collections | Onboarding answers, people and children you added, journal entries |
| Reading your content aloud | The generated text and your chosen voice |
| Keeping your library, favourites and streaks in sync | Account identifier, usage |
| Giving you access to paid features and honouring your trial | Subscription status, account identifier |
| Measuring which marketing actually works | Install and attribution signals, the advertising identifier if you allowed it |
| Fixing bugs and keeping the service stable and secure | Technical data, diagnostics |
4. Automated content generation
Your stories and affirmations are written and voiced automatically by artificial intelligence. To produce them, the details you gave in your profile are passed to the AI provider we use. Under our agreement with that provider, your content is not used to train their models.
Generated text is produced by a machine and is intended for relaxation and reflection. It is not advice of any kind, and it is not a substitute for medical, psychological, financial or legal guidance.
5. Who else processes your data
We do not sell personal data and we do not share it for cross-context behavioural advertising. We rely on a small number of specialist service providers, each bound by contract to process data only on our instructions and only for the purpose listed:
| AI content and speech provider | Generating story and affirmation text, and synthesising the voice that reads it |
|---|---|
| Cloud hosting and database providers | Storing your profile, library and journal, and running the service that delivers them |
| Subscription management provider | Managing subscriptions, trials and access to paid features |
| Marketing measurement provider | Attributing installs to advertising campaigns |
| Apple | App distribution, payments, advertising attribution and crash reporting |
If you would like to know which companies currently fill these roles, write to us and we will tell you.
We may also disclose information where the law requires it, or where it is necessary to establish or defend legal claims.
6. Where your data is processed
Our providers operate servers in the United States and the European Union, so your information may be transferred outside your country. Where that involves transfers out of the European Economic Area or the United Kingdom, those transfers rely on the European Commission's Standard Contractual Clauses or an equivalent safeguard.
7. How long we keep it
Your profile, library and journal are kept for as long as your account exists, so that the App still knows you when you come back. Delete the account from the App and the associated records are removed immediately; any backup copies are rotated out within 30 days. Records of your purchases are kept by Apple and by our subscription provider for as long as accounting and anti-fraud rules require.
8. Deleting everything
Open Settings inside the App and choose Delete account and data. This removes your profile, the people and children you added, your stories, favourites, journal entries and streaks, and it returns the App to its first-launch state. The action cannot be undone. Simply removing the App from your device does not delete the data we hold — use the in-app option, or email us and we will do it for you.
9. Your rights
Depending on where you live, you may have the right to access the data we hold about you, to correct it, to delete it, to receive a copy in a portable format, to object to or restrict certain processing, and to withdraw a consent you previously gave. Exercising these rights will never cost you anything or degrade the service.
If you are in the European Economic Area or the United Kingdom, our legal bases are: performance of a contract for everything required to deliver the App and your subscription; consent for tracking via the advertising identifier; and our legitimate interest in keeping the service secure, stable and financially viable. You also have the right to complain to your local data protection authority.
If you are a California resident, you have the rights to know, delete, correct and to opt out of the sale or sharing of personal information. We do not sell or share personal information as those terms are defined under the CCPA, and declining the iOS tracking prompt is an immediate opt-out of the only advertising-related processing we perform.
To make a request, write to wiebkedevscontact@gmail.com. We reply within 30 days. Because there is no sign-up, please send your request from a device with the App installed so we can locate the right account.
10. Children
The App is not directed to children and is not intended for anyone under 16. We do not knowingly collect data from children. The App does let an adult record the first names and ages of their own children so that stories can mention them; that information is supplied by the parent or guardian, is used for nothing but generating content for that adult, and is deleted along with the rest of the account. If you believe a child has used the App independently, contact us and we will remove the data.
11. Security
Your data is encrypted both in transit and at rest, identifiers are kept in secure storage on your device, and access to live systems is restricted to the smallest number of people needed to operate the service. No system is perfectly secure, and we cannot guarantee absolute security, but we will notify you and the relevant authority without undue delay if a breach affects your data.
12. Changes to this policy
If this policy changes we will update the date at the top of this page, and for material changes we will give notice inside the App before they take effect. Continuing to use the App after that point means the updated policy applies to you.
13. Contact
Questions, requests or complaints: wiebkedevscontact@gmail.com.