When

Mehul Jain

In-app purchases

About this app

When helps you find the right moment for what matters — a new business, a
wedding, a flight home, a difficult conversation — by drawing on five
classical astrological traditions: Vedic (Muhurta), Chinese (Tong Shu and
Bazi), Tibetan (Kartsi), Korean (Saju), and Vietnamese (Tử Vi). A
deterministic engine returns a short list of windows over your chosen date
range, ranked by each tradition's classical rules, with the reasoning shown
alongside the score.

Ask in plain language:
• "Good time to sign a lease tomorrow"
• "When should I host Diwali dinner"
• "Is Friday morning ok for a flight to India"

Optional personalisation — your birth date, time, and birth place — enables
the chart-aware factors: Vedic Tara Bala and Chandrashtama; Chinese
Day-Master harmony; Tibetan birth-mewa. Without birth details the app uses
the universal panchang only.

WHAT YOU GET

• Five astrological traditions, each scored independently with the
reasoning visible — no black box.
• Plain-language interpretation of your queries via AI.
• Calendar heatmap of auspicious vs caution days for the visible month,
with the day's best activity surfaced as a sentence.
• Festival reminders across traditions: Diwali, Holi, Lunar New Year,
Qingming, Losar, Chuseok, and more, with a five-year window pre-loaded.
• Trip mode — pre-stage a destination so you can query its windows without
re-typing.
• Compare two locations or times side-by-side.
• Multi-person mode for events that need many charts to align (weddings,
family decisions). Score is the worst-of-all-charts so nobody gets a bad
day.
• Event templates for wedding, housewarming, baby naming, business opening
and more — each scored as a multi-step composition.
• Share a window as an elder-vernacular card: Gujarati, Tamil, Mandarin
(simplified and traditional), Vietnamese.
• Family plan — invite up to 6 family members and reuse their charts.

PRIVACY

Your birth details and queries stay private. We use Supabase for storage,
OpenAI only to interpret your natural-language input into structured fields
(birth details never go to OpenAI), and Expo's push service for native
notifications. We do not sell or rent data. Full details at
when.jainmehul.com/privacy.

THIS APP IS

…informational, drawing on classical astrological rules. It is not a
substitute for a qualified astrologer's reading, nor for medical, legal, or
financial advice.

What’s new

Initial release. Five astrological traditions (Vedic, Chinese, Tibetan, Korean, Vietnamese). Calendar heatmap. Trip mode. Multi-person scheduling. Event templates.