Data protection notes – Werkbank

Controller

Christian Tonke
Adelheider Str. 258
27755 Delmenhorst
Germany
Email: christian@tonke.de

Applies to all modules

• No user account. Werkbank does not require registration, an email address or signing in with me. I don't know who uses the app.
• Local only. All content lives in a local SQLite database inside your device's private app container; particularly sensitive fields are additionally encrypted with AES-256-GCM, with the key in the keychain (iOS Keychain or Android Keystore). Deleting the app removes this data.
• No server of mine. Werkbank has no server of its own. The only network connection is purchasing and verifying the subscription via StoreKit 2 (Apple) or Google Play Billing (expo-iap) — Apple's/Google's own privacy terms apply there as well.
• Sharing only by you. Exports, backups and reports (PDF/ZIP/CSV) are only ever shared through the system share sheet, when you trigger it yourself.
• Subscription. Werkbank is a subscription (€3.99/month, €29.99/year) with a free basic tier; purchase and management run entirely through Apple/Google — I never see any payment details.

1. Projects & Parts Lists

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Project title/description; parts list (dimensions, material, quantity); work steps with photos (attachments); work hours; costs (cents).

Permissions: Camera, photos.

2. Cutting Plan

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Panel dimensions; cut pieces; calculated result (JSON).

Permissions: –.

3. Tools & Settings

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Tools with purchase date, price, serial number, storage location; setting values; maintenance; lending: borrower's name (free text or contact).

Permissions: Camera, photos, notifications.

4. Paint & Finishes

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Mixing recipes with ratios; paint samples/photos; coats with drying time.

Permissions: Camera, photos, notifications.

5. Small Parts & Screws

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Small parts, stock, storage location; photos of parts.

Permissions: Camera, photos.

6. Batteries & Cables

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Batteries, charge cycles, storage location; cables/adapters.

Permissions: Notifications.

7. Workshop Routines

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Routines with interval; completed history (optionally with person); safety checks.

Permissions: Notifications.

8. Costing & Sales

Local only – data leaves the device only if you share or back it up yourself

What is stored locally: Unit costs, hourly rate, margin; market dates, location, stall fee; sales, payment method, till balance.

Permissions: Notifications.

App stores

Werkbank is distributed through the Apple App Store and Google Play. The terms of service and privacy policy of Apple or Google apply to the payment process and billing.

Legal basis

Local processing on your device: Art. 6(1)(b) GDPR (performance of the contract/use of the app) or legitimate interest (Art. 6(1)(f) GDPR). Any voluntary sharing (export, share sheet) happens at your own initiative.

Your rights

Since all content lives exclusively on your device, you can view, change, export or delete it yourself at any time (app settings or uninstalling). For questions about this processing, reach me at christian@tonke.de.