Kakei AI Privacy Policy

01 Built for Privacy

• No account required: No sign-in. Not even the developer knows who you are.

• Biometric protection: Face ID / Touch ID support to prevent physical snooping.

• Privacy mask: A "hide assets" mode is available, and the interface blurs automatically when the app moves to the background.

• Local-first: Core bookkeeping and local AI features work fully offline.

02 Data Storage & Transfer

• On-device encryption: All data is stored in an encrypted local database on your device.

• Personal iCloud sync: If enabled, data is synced exclusively through Apple's official CloudKit into your personal iCloud space. The developer has no access and cannot read your data.

03 AI & Data Security

Core Technology

• Apple AI (Apple Intelligence)

  Uses Apple's built-in AI, including speech recognition and translation features, all governed by Apple's privacy standards.

• Local AI (MLX / Qwen3)

  The AI model runs in an isolated sandbox entirely on-device. All analysis happens at the hardware level — data cannot leave your device.

• Cloud AI (Google Gemini)

  Cloud AI requires your explicit consent. Before first use, the app displays a disclosure screen explaining what will be shared and asks you to confirm: (1) for the purpose of transaction categorization and financial analysis, data sent to the Google Gemini API includes your account and transaction statistics, text extracted from scanned images, and transcriptions of voice input; (2) the recipient is Google LLC (USA). The connection is established directly between your device and Google's servers — the app never handles or stores any data in transit. If you bring your own API Key, it is stored exclusively in the Apple Keychain, a hardware-protected secure enclave inaccessible even to the developer.

04 Required Third-Party Services

• Exchange rates (Supabase): Only fetches publicly available exchange rate data. No personal data is uploaded.

• Anonymous diagnostics (Firebase): Only sends de-identified system information in the event of a crash, used solely for bug fixes.

• Payment processing: Handled entirely by the official Apple App Store. We do not process or store any payment information.

05 Changes to This Policy

We reserve the right to update this Privacy Policy at any time. For material changes, we will provide advance notice via in-app notification or this page, and update the "Last updated" date at the top.

Continued use of the App after changes take effect constitutes acceptance of the revised policy. If you have any questions, please reach out via the email below.