Effective date: Jan 13, 2026

App: Joyful Cal (“App”)

Publisher: Yu Feng (“we,” “us”)

Contact: [email protected]

1) Summary

Joyful Cal helps you estimate calories and macronutrients from meal photos. We collect only what we need to operate the App, and we do not sell your personal data.

2) Information we collect

A) Account information

• Email address
• Name (if you provide it)

We use this information only to create and manage your account and enable access to your meal history.

B) Meal data

• Meal photos you upload for analysis
• Meal history and nutrition results (e.g., calories/macros and any labels/notes you save)

C) Diagnostics (limited)

We do not use third-party analytics. We may still collect minimal technical logs necessary to operate the service (e.g., server error logs) as part of standard hosting operations.

3) How we use your information

We use information to:

• Provide core functionality (photo-based nutrition estimation)