Kalmanas vs Co-Star
Co-Star made astrology social and beautifully designed. Kalmanas brings that same design sensibility to the deepest Vedic calculations available anywhere online.
Feature-by-Feature Comparison
| Category | Kalmanas | Co-Star |
|---|---|---|
| Astrological System | ★★★★★Vedic (sidereal) astrology with Lahiri ayanamsa default and 12 options. Rooted in Parashara, Jaimini, and Nadi traditions. | ★★★☆☆Western (tropical) astrology using Porphyry house system — a non-standard choice that many astrologers question. |
| Chart Depth | ★★★★★19 divisional charts, 100+ yogas, Shadbala, Ashtakavarga, Arudha Padas, Sphutas, Vimshottari Dasha with narrative timing. | ★★☆☆☆Basic natal chart with sign/house placements. No divisional charts, no yogas, no Dasha timing, no strength analysis. |
| Design & UX | ★★★★★Dark luxury aesthetic, mobile-first, Lighthouse 96. Focused on depth and clarity. | ★★★★★Iconic black-and-white minimalism. Beautiful social interface. But Lighthouse score is just 29. |
| AI Interpretation | ★★★★★AI narratives grounded in classical texts (BPHS, Saravali, Hora Sara). Explains why placements matter. | ★★★☆☆AI-generated notifications — often provocative or vague. No astrologers on staff. Criticized for harmful messaging. |
| Social Features | ★★☆☆☆Compatibility readings available. Shareable chart cards coming soon. No in-app social network. | ★★★★★Core feature — add friends, compare charts, shared daily updates. Social virality drives growth. |
| Performance | ★★★★★Lighthouse 96. Sub-second loads, self-hosted fonts, deferred analytics. | ★☆☆☆☆Lighthouse 29. Very slow loads due to heavy JavaScript and third-party scripts. |
Which One Is Right for You?
You want serious Vedic astrological depth, psychological profiles backed by classical texts, and a self-knowledge tool — not a social app.
You want social astrology — comparing charts with friends, viral daily notifications, and a minimalist Western-astrology aesthetic.
Why People Switch from Co-Star
- No Vedic astrology at all — only Western tropical system
- Shallow analysis — basic sign/house placements without depth
- Provocative daily notifications criticised for harmful messaging
- No planetary strength, no timing (Dasha), no divisional charts
- Lighthouse score of 29 means painfully slow loads
Frequently Asked Questions
Does Co-Star do Vedic astrology?
No. Co-Star uses exclusively Western tropical astrology with the Porphyry house system. For Vedic (sidereal) astrology with divisional charts, Dasha timing, and yoga detection, you need a dedicated Vedic platform like Kalmanas or JHora.
Why do people leave Co-Star?
Common reasons include shallow analysis (only basic placements), provocative daily notifications that users find harmful, extremely slow load times (Lighthouse 29), and a desire for deeper astrological systems like Vedic astrology.
Is Kalmanas like Co-Star but for Vedic astrology?
In design sensibility, yes — both prioritise aesthetics. But Kalmanas offers orders of magnitude more depth: 100+ yogas, 19 divisional charts, Shadbala strength analysis, Vimshottari Dasha timing, and AI narratives grounded in classical Vedic texts.
Can I use Co-Star and Kalmanas together?
Absolutely. Many users compare their Western (tropical) chart from Co-Star with their Vedic (sidereal) chart from Kalmanas. The two systems offer complementary perspectives — tropical focuses on psychological tendencies while sidereal maps karmic patterns.
See the Difference for Yourself
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