This Privacy Policy describes how Tenki ("we", "us") handles information in the "CalAI" app (the "App").
1. Information We Collect
| Category | Details |
| Account | Identifiers from Apple / Google sign-in, and email address where provided (including Apple's Private Relay email) |
| Health & meal data | Weight records, meal logs (estimated calories, PFC, etc.), and meal photos |
| Purchase | Subscription purchases and status (payments are processed via RevenueCat and the app stores; we do not store card details) |
| Usage & analytics events | In-app events (sign-in, analysis run, save, billing status changes, etc.). We do not include personal data or health values such as email or weight (only identifiers such as an internal user ID) |
| Device & logs | Access timestamps, error information, request identifiers and similar technical data |
2. How We Use Information
- To provide the App (AI meal-photo analysis, logging, aggregation, weight tracking).
- To provide subscriptions and manage entitlement status.
- To improve quality, fix issues, and produce statistics/analytics.
- To respond to inquiries and prevent abuse or violations.
- To comply with laws.
3. AI Image Analysis
To analyze meal photos, image data is sent to our AI service provider (currently OpenAI, Inc.), which returns analysis results (items, quantity, calories, PFC, etc.). That provider's handling of data (retention, and whether it is used for training) follows the API configuration we select and the provider's terms.
Under the provider's API policy, images and input/output data sent for AI analysis are not used to train or improve AI models by default, and are retained for up to 30 days for purposes such as abuse monitoring before deletion (subject to the provider's current policy).
4. Sharing & Processors
Except as required by law, we do not share personal information with third parties without consent. We use the following processors to operate the service:
- AI analysis: OpenAI, Inc.
- Billing / subscription management: RevenueCat, Inc. and Apple / Google
- Cloud infrastructure (servers, storage): Google Cloud (Google LLC)
We do not sell collected information to third parties for advertising.
5. Data Retention
- Meal photos are retained for up to 90 days, or until the associated meal record is deleted, and then removed.
- After an account deletion request, related data is generally deleted within 30 days (except records we must retain by law).
6. International Transfers
Due to AI processing and cloud infrastructure, data may be processed outside Japan (e.g., in the United States). By agreeing to this Policy, you consent to such transfers.
7. Your Rights
- You may request disclosure, correction, deletion, or suspension of use of your information.
- You can delete your account and data from "Delete Account" in the App.
- To withdraw consent or exercise your rights, contact us below.
8. Cookies, Tracking & Ads
The App does not serve ads or perform cross-app/cross-site behavioral tracking. Analytics is limited to the anonymous event measurement described above.
9. Security
We implement reasonable safeguards such as encryption in transit and access controls to protect information against leakage, alteration and unauthorized access.
10. Children
The App is intended for users of all ages. Where a child uses the App, they should do so with the consent and supervision of a parent or guardian.
11. Changes
We may update this Policy as needed. Material changes will be announced in the App or on this page.
12. Contact
For questions about this Policy or our handling of personal information, contact [email protected].