Last updated: 31 October 2026
Summary: ConfigSync does not collect any data. Your configuration lives on your Mac and in your own iCloud; there is no ConfigSync server. Secrets are encrypted end to end.
1. Controller
Adrián Fernández López, independent developer. Contact: info@theviking.me.
2. Data we collect
ConfigSync does not collect any data. There is no ConfigSync server: the developer does not receive your files, your configuration or information about your usage.
3. Where your data lives
Your config files, their version history and information about your Macs are stored on your Mac and in the private database of your own iCloud (CloudKit), tied to your Apple ID. They use your iCloud storage. Only you can access them with your Apple ID; the developer has no access.
4. Sign in with Apple
You sign in with Sign in with Apple. The user identifier Apple provides is used only on your device, to derive your encryption key. It is not sent to any server of ours.
5. Encryption of secrets
Files detected as secrets (tokens, keys) are encrypted end to end with ChaCha20-Poly1305 (CryptoKit) before they leave your Mac. The key is derived on your device and is not shared with anyone.
6. Access to your Home folder
ConfigSync asks once for access to your Home folder, so it can read and restore the config files you choose to track. Nothing is changed on disk without your explicit confirmation, and a local snapshot is kept before every restore. You can revoke access from Settings > Security inside the app.
7. Sharing with friends
If you choose to share a config with a friend, it is only shared with contacts who accepted your invite, and only what you choose to send.
8. Analytics, advertising and tracking
ConfigSync contains no advertising, analytics, trackers or third-party SDKs.
9. Purchase
ConfigSync is sold on the Mac App Store. Payment is processed by Apple; the developer does not receive your payment details.
10. Your rights (GDPR)
- Access and portability: all your data is on your Mac and in your iCloud.
- Erasure: uninstall the app to remove local data; in iCloud you can remove it from your Apple ID's iCloud storage settings.
- When you sign out, your iCloud data stays in your iCloud.
11. Changes to this policy
Any material change will be published on this page and reflected in the "Last updated" date.
12. Contact
Privacy questions: info@theviking.me