Privacy Policy
Radialday — 24h dial planner · Last updated: September 2026
1. Controller
Controller within the meaning of the GDPR and other data protection laws:
A&C Solutions UG (haftungsbeschränkt)
Hengsteyer Str. 41
58099 Hagen
Germany
Email: info@a-c.solutions. Managing directors: Antonio-Pio Basile, Chrisovaladis Vassiliadis. Commercial register: Amtsgericht Hagen, HRB 13534. VAT ID: DE455925687.
2. This website
The marketing and legal pages at https://www.a-c.solutions/radialday are static. We do not set tracking cookies, do not use a cookie banner, and do not load Vercel Analytics, Google Analytics, ads, or social pixels. No consent management platform.
The site is hosted by Vercel. When you load a page, the host necessarily processes connection data (IP address, time, requested URL, user agent) in server logs to deliver the site and keep it secure (Art. 6(1)(f) GDPR). Logs are not used to profile you.
3. The iOS app Radialday
Radialday is local-first. Your day lives in SwiftData on the iPhone. There are no ads, no tracking SDKs, no Crashlytics, no analytics, and no Firebase Messaging in the app. Languages: German and English.
3.1 Local data (no account required)
- Time blocks, templates, categories, and dial settings on-device (SwiftData)
- Widget snapshot in the App Group — local, not uploaded; the widget does not fetch EventKit itself
- Live Activities — local, system UI
- Local notifications before a block starts and when a block ends — on-device; no remote push
Legal basis: performance of the app you purchased (Art. 6(1)(b) GDPR) and storage on your device under your control.
3.2 Calendars (EventKit)
If you connect calendars, Radialday reads events through Apple EventKit (read-only) and draws them on the dial. Events stay in the system calendar accounts (iCloud, Google, Exchange, etc. as configured in iOS). We do not write events to EventKit and do not copy calendar events or calendar IDs to Firestore.
3.3 Optional Sign in with Apple or Google + sync
An account is optional and never a paywall. If you choose Sign in with Apple and/or Google, we receive a provider user identifier and, if shared, an email (Apple may provide a relay address). We use Firebase Authentication and Cloud Firestore only to sync your dial between devices.
In Firestore under users/{uid} we may store: Firebase user id (uid), email if provided, schema metadata, time blocks, templates, categories, and dial preferences.
Not synced: EventKit events, calendar IDs, notification permission, onboarding state, Live Activity state, widget files.
Legal basis: contract / requested service (Art. 6(1)(b) GDPR). Processor: Google Ireland Limited (Firebase). Data may be processed in the USA under Google’s contractual safeguards (standard contractual clauses). We do not claim encryption beyond Apple’s platform defaults and Firebase’s standard protections.
3.4 Purchases
The one-time App Store listing price (€0.99) is charged by Apple. There is no in-app purchase and no subscription. We do not receive your payment card details. Apple’s privacy policy applies to the store transaction.
4. Retention and deletion
Local data remains until you delete it or reset the app. Cloud sync data remains until you delete the account in Settings (or email us): the cloud copy and the Firebase/provider user are removed; local blocks on the device remain until you delete or reset them yourself. Server logs for this website are kept only as long as needed for operations and security.
5. Your rights
You have the right of access, rectification, erasure, restriction, data portability, and objection (Arts. 15–21 GDPR), and the right to lodge a complaint with a supervisory authority (Art. 77 GDPR). For Radialday that is typically:
Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen
Kavalleriestraße 2-4
40213 Düsseldorf
Email: poststelle@ldi.nrw.de · https://www.ldi.nrw.de
Contact us at info@a-c.solutions or by post. We respond within one month.
6. Children
The app is a general productivity tool, not directed at children. App Store age rating applies. We do not knowingly market to children.
7. Changes
We may update this policy. The current version is published on this page and in the app. Material changes will be noted here.