AstroAsk vs Co–Star
Co–Star is a beautifully designed, mobile-first Western astrology app famous for AI-personalized daily horoscopes and social chart-sharing with friends. It's Western/tropical and English only, with no Vedic astrology at all — the opposite end of the spectrum from AstroAsk's dual-tradition, web-based, no-signup approach.
AstroAsk
Free Vedic + Western astrology with AI — no signup
A free, no-signup platform that computes professional-grade Vedic and Western charts in one place — Shadbala, Ashtakavarga and three dasha systems on the Vedic side; synastry, progressions and solar return on the Western side — with free AI readings and follow-up chat, embeddable widgets, and no paid-consultation upsell.
Co–Star
Mobile-first Western AI + social astrology
The archetypal mobile-first Western astrology app — pairs NASA ephemeris data with AI to generate hyper-personalized daily horoscopes, and pioneered a social layer where friends compare charts. Western/tropical only, English only, with no Vedic capability.
Feature comparison
| Feature | AstroAsk | Co–Star |
|---|---|---|
| Birth Charts | ||
| Vedic Kundali (D1) | ✗ | |
| Western natal chart | ||
| Divisional (varga) charts | ◑D9 Navamsa | ✗ |
| Vedic Depth | ||
| Shadbala (six-fold strength) | ✗ | |
| Ashtakavarga | ✗ | |
| Dasha systems | ×3 | ✗ |
| Nakshatra analysis | ✗ | |
| 36-point Kundali matching | ✗ | |
| Mangal Dosha analysis | ✗ | |
| Western Depth | ||
| Synastry (relationship charts) | ||
| Secondary progressions | ✗ | |
| Solar return charts | ✗ | |
| Aspect & chart-pattern tools | ◑in-app | |
| AI & Personalization | ||
| AI chart reading | free | Western |
| AI follow-up chat with memory | free | Paid onlyAsk the Stars |
| Personalized daily horoscope (from your chart) | ||
| Sign-based horoscope | ◑ | |
| Access & Model | ||
| Free, no signup required | no accounts | ✗app + account |
| Ad-free | ||
| No paid-consultation upsell | ◑premium | |
| Live human astrologers | ✗self-serve | ✗ |
| No-code embeddable widgets | ✗ | |
| Developer API | via RapidAPI | ✗ |
| Languages | ◑English, Hindi | ◑English |
Why choose AstroAsk
- ✓Full Vedic astrology (Kundali, dashas, matching, doshas) — Co–Star has none.
- ✓Works in any browser with no app download or account.
- ✓Free AI chart readings and follow-up chat, not a paid add-on.
- ✓Professional Western tools too (synastry, progressions, solar return), so you're not limited to daily insights.
When Co–Star is the better choice
- →You want a polished mobile app with a social / friend-compatibility layer.
- →You only care about Western astrology and daily push-style insights.
Frequently asked
Does Co–Star do Vedic astrology?
No — Co–Star is Western/tropical only. AstroAsk offers both Vedic and Western charts.
Do I need to download an app for AstroAsk?
No — AstroAsk runs in any web browser with no download or signup, unlike Co–Star.
Is AstroAsk's AI free like Co–Star's?
AstroAsk's AI readings and follow-up chat are free. Co–Star's conversational AI ('Ask the Stars') is a paid feature.
See your own chart free
No signup, no ads — generate your chart and ask the AI anything.
Last verified 2026-07-18. Competitor facts are sourced from public pages; unverified cells are marked “?”. Co–Star