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The Vietnamese zodiac (12 Con Giáp) is a 12-animal cycle similar to the Chinese zodiac but with key differences. Most notably, Vietnam uses a Cat instead of a Rabbit and a Water Buffalo instead of an Ox. Each animal is paired with one of five elements (Metal, Wood, Water, Fire, Earth) in a 60-year cycle, creating rich personality profiles and daily guidance.

This is a centuries-old Vietnamese tradition, not an error. While most of the world follows the Chinese zodiac with the Rabbit, Vietnamese astrology has always used the Cat. Sao Mai is built specifically for Vietnamese zodiac traditions, making it the first app that gets this distinction right.

Your zodiac animal is determined by your birth year in the Vietnamese lunar calendar. If you were born in January or February, your animal depends on whether your birthday fell before or after Tết (Vietnamese Lunar New Year). Sao Mai handles this boundary correctly using UTC+7 lunar calculations.

Free gives you daily luck rating, lucky color, one quote, basic insight, element energy, and 1 fortune draw per day. Sao Mai+ ($5.99/month or $29.99/year) unlocks auspicious hours, full do's & don'ts, detailed forecasts, lucky numbers and direction, unlimited compatibility checks, full fortune interpretations, tomorrow preview, and more. You can try Sao Mai+ free for 7 days with the annual plan.

Go to Settings → Apple ID → Subscriptions on your iPhone, find Sao Mai, and tap "Cancel Subscription." You'll retain access until the end of your current billing period. You can also manage subscriptions directly in the App Store.

Yes. We only collect the data needed to personalize your experience (birth year, language preference, vegetarian day level). We don't sell or share personal data with third parties for advertising. Most data stays on your device. See our Privacy Policy for full details.

Yes, daily guidance is generated by Claude (by Anthropic) using traditional Vietnamese astrology rules as the foundation. All scores and ratings are computed deterministically from real zodiac formulas. The AI adds personalized prose that explains what the formulas mean for you. No personal data is sent to the AI — only your zodiac type.

Giờ Hoàng Đạo are the 6 most auspicious two-hour periods in each day, according to Vietnamese almanac tradition. They're calculated from the day's Earthly Branch and are commonly consulted for important activities like signing contracts, starting journeys, or holding ceremonies. Sao Mai computes these using traditional formulas.

Open the app, go to Profile → Settings → Delete Account. You'll be asked to confirm by typing "DELETE." This permanently removes all your local data, cancels notifications, and queues server-side data for deletion within 30 days.