Privacy Policy

Privacy Policy for Kithora


Welcome to Kithora. We believe that your private moments, plans, and data belong to you. That's why we built Kithora as a local-first application. Unlike conventional cloud apps, we don't store your personal data on central servers to analyze or sell it. Your device is your vault.

This privacy policy explains how we collect, use, and protect data when you use our mobile application.


1. The Local-First Principle & Data Storage

Kithora is based on a decentralized architecture. This means:

  • No Accounts: You don't need to create a user account with an email or phone number. We don't know your identity.
  • Local Storage: All content (Koras, Steps, Finances, Photos) is primarily stored locally on your device.
  • Encrypted Backups: Your data is encrypted and stored in our sync infrastructure so you can restore it on a new device. We have no access to the unencrypted content.

2. Synchronization & Encryption

To exchange data between different devices (e.g., within a group), Kithora uses an encrypted sync infrastructure.

  • Encrypted Data Only: Our sync servers act as blind couriers. They store and transmit encrypted data packets without being able to read the content.
  • End-to-End Encryption (E2E): All data that leaves your device is encrypted. Only the devices in your group (Kith) possess the key to decrypt it.
  • Persistent Storage: Encrypted data is stored on our servers to enable synchronization between devices and restoration on new devices. Since the data is end-to-end encrypted, neither we nor any third parties can read the content.

3. Subscriptions & Purchases (RevenueCat)

To manage subscriptions (Kithora Plus, Hero status) and in-app purchases, we use the service provider RevenueCat.

  • Anonymous Device ID: To verify and restore your purchase status (e.g., "Free", "Oracle", "Hero"), we transmit an anonymized device ID or a generated app user ID to RevenueCat.
  • No Personal Data: We do not transmit names, email addresses, or content from your Koras to RevenueCat.
  • Payment processing is handled entirely through the Google Play Store or Apple App Store. Kithora does not store credit card data.

4. Use of Artificial Intelligence (AI)

Kithora offers optional AI features (e.g., analysis of PDF crew lists, travel planning, budget optimization).

  • Processing: When you use these features, the relevant data (e.g., the text of an uploaded PDF or your budget data) is sent to an AI service provider for processing.
  • No Training: The transmitted data is used exclusively to fulfill your request. It is not permanently stored and is not used to train third-party AI models.
  • Transparency: AI analyses only take place when you actively trigger a corresponding function (e.g., "Scan manifest" or "Optimize budget").

5. App Permissions

For Kithora to function, we need access to certain features of your device:

  • Camera: For scanning and photographing receipts and documents. Only at your request.
  • Photo Library: For uploading photos to the Chronicle or for AI analyses. Only at your request.
  • Notifications: For optional push notifications about group activities.

6. Third-Party Services

Kithora uses the following third-party services:

  • RevenueCat: Subscription management (see section 3).
  • AI Service Provider: For optional AI features (see section 4).
  • Apple App Store / Google Play Store: For processing payments for subscriptions and in-app purchases.

7. Your Rights

Since Kithora does not store personal data on central servers that can be attributed to you, traditional data access or deletion requests are generally not applicable. Your data is stored encrypted – only you and your group can decrypt it. When you delete the app, the local data is removed from your device.

If you still have questions, please feel free to contact us:

Arndt Lehmann
Email: [email protected]

8. Children

Kithora is not intended for children under the age of 16. Since we do not collect accounts, we cannot verify the age of users. The use by minors is the responsibility of their legal guardians.

9. Changes to This Privacy Policy

We reserve the right to update this privacy policy in the event of changes to the app or the legal situation. You can always find the current version in the app and on our website.

10. Contact

Arndt Lehmann
Glück-Auf-Straße 41, 09394 Hohndorf
Email: [email protected]

Last updated: March 05, 2026