Privacy Policy

Last updated: May 22, 2025

1. Overview

Keywords Tool ("we", "our", "us") is developed and operated by Molostock Co., Ltd. This policy explains how we handle your data when you use our macOS application and related services.

2. Information We Collect

Account Information

When you sign in with Apple, we receive only your email address. We do not receive or store your Apple ID password. Apple may provide either your real email or a private relay email (e.g., [email protected]).

Usage Data

We track your credit balance and deduction records to operate the service. Deduction records include filename and generation method, retained for 90 days then automatically deleted.

Image Data

When you generate keywords, a resized thumbnail (max 512px, JPEG compressed) of your image is sent to our AI service. Original images never leave your Mac. Thumbnails are processed in real-time and not stored on our servers.

3. Information We Do NOT Collect

  • We do not collect, upload, or store your original image files
  • We do not track your browsing behavior or app usage patterns
  • We do not collect device identifiers or analytics
  • We do not share your personal information with third parties for marketing
  • We do not use cookies or tracking pixels in our app

4. Data Storage

Your account data is stored on Cloudflare's infrastructure (D1 database) with built-in encryption at rest. All data transmission uses HTTPS/TLS encryption. Your metadata edits are stored locally on your Mac using SQLite and are never uploaded to our servers.

5. AI Processing

Image thumbnails are sent to our AI processing service to generate keywords. The AI service processes the thumbnail in real-time and returns text results. Thumbnails are not stored after processing. We use the image data solely for the purpose of generating metadata as requested by you.

6. In-App Purchases

Payment processing is handled entirely by Apple through the Mac App Store. We do not receive your credit card information or payment details. We only receive a transaction confirmation from Apple to credit your account.

7. Data Retention

  • Account data: Retained until account deletion is requested
  • Deduction records: Automatically deleted after 90 days
  • Image thumbnails: Not stored — processed in real-time only
  • Local metadata: Stored on your Mac only, under your control

8. Your Rights

You have the right to:

  • Access the personal data we hold about you
  • Request correction or deletion of your data
  • Withdraw consent for data processing
  • Export your data in a portable format

To exercise any of these rights, contact us at [email protected].

9. Children's Privacy

Keywords Tool is not intended for use by children under the age of 13. We do not knowingly collect personal information from children.

10. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any material changes by posting the new policy on this page and updating the "Last updated" date.

11. Contact

If you have questions about this privacy policy or our data practices, please contact us at:

Molostock Co., Ltd.

[email protected]