Privacy Policy

Last updated: September 13, 2026

Polski · English · Русский

In short

Data controller

The data controller is Piotrek Demidowicz (demicode), Poland. Privacy questions: piotrek.demidowicz@gmail.com.

Data that stays on your device

Challenges (name, type, start date, daily cost), journal entries and moods, reminder settings, urge logs, milestones and app preferences are stored locally with Apple SwiftData. Because this information can reveal facts about your health (e.g. a history of alcohol use), we treat it as sensitive: it is processed only on your device at your request and never transmitted to us.

What happens without any consent

If you decline everything, the app still needs two technical services to work (legal basis: our legitimate interest in providing a functioning app, GDPR Art. 6(1)(f)):

The Firebase installation ID is a random value that is not tied to your name, Apple ID or advertising identifier. Google acts as our processor; data may be processed in the United States under the EU Standard Contractual Clauses.

Analytics and diagnostics — only with your consent

On first launch we ask whether you agree to "Analytics & diagnostics". It is off until you say yes and covers three Google Firebase services:

The text of your entries, challenge names, dates and moods are never sent to any of these.

Legal basis: consent (GDPR Art. 6(1)(a)). Withdraw it at any time in the app's Settings → Privacy; collection stops immediately. Retention by Google: analytics identifiers up to 14 months, crash and performance data 90 days.

The consent screen also shows a "Marketing" category. It is currently inactive — no marketing communication is sent — and is present only so that you can decide in advance should such a feature ever be added.

Optional features that contact third parties

Third-party services (summary)

Your rights and choices

Children

Good Days is intended for adults. We do not knowingly collect data from anyone under 16. If you believe a child has used the app and analytics consent was given, contact us and we will delete the associated diagnostic data.

Nature of the app

Good Days is a motivational tool. It does not constitute medical advice, diagnosis or therapy and does not replace contact with a professional. Helpline and clinic details shown in the app are publicly available information.

Changes to this policy

We may update this policy when the app changes. Material changes will be reflected in the "Last updated" date above and, where appropriate, announced in the app.

Contact

Privacy questions: piotrek.demidowicz@gmail.com.