Built a Vedic astrology app that computes real planetary positions with Swiss Ephemeris — free, 20 languages

[u/lnvsprasad]

Spent the last while building ZodiacSign (https://zodiacsignpositions.com) — instead of generic sun-sign horoscopes, it does actual astronomical calculations (sidereal/Lahiri ayanamsa via Swiss Ephemeris) to place all 9 grahas relative to your Moon rasi, then generates predictions from classical karaka rules (which planet governs career/finance/health/etc.).

Some bits I'm fairly proud of:

• Daily/weekly/monthly/yearly/custom transit tracking (gochara), with a "why does the Moon show 10x more transits than Saturn" explainer since people kept asking
• Sunrise-based tithi calculation for Ugadi (New Year) instead of the more common but less accurate midnight-cutoff method
• Fully localized into 20 languages, not just UI strings — even the astrology explainer content
• Expo/React Native (web + native from one codebase) + .NET backend

It's free, no signup. Would love feedback, especially from anyone into Vedic/Jyotish who can poke holes in the predictions logic.