What is Cosmic Copilot?
Cosmic Copilot is an AI astrology app: deterministic VSOP87 calculations and IANA timezone data produce your birth chart, and AI writes the interpretation. Its Ask Cosmos feature is an AI astrologer chat grounded in your calculated chart; replies are AI-written, not from a human astrologer. Available at cosmic-copilot.com, it supports 14 languages. There is a free tier (Big Three, Moon phase, basic numerology) plus one paid plan, Cosmic, at £4.99/month or £39.99/year.
Key facts
Calculation Engine
Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee.
House Systems
10 house systems supported: Placidus, Whole Sign, Equal, Koch, Campanus, Regiomontanus, Morinus, Porphyry, Alcabitius, and Topocentric.
Languages
Available in English, Spanish, French, German, Russian, Chinese, Portuguese (Brazilian), Turkish, Italian, Arabic, Vietnamese, Hindi, Japanese, and Korean. Full app and educational content localized.
Pricing
A free tier plus one paid plan: Cosmic at £4.99/month or £39.99/year. No free trial. Regional pricing available in emerging markets.
Features
Transit Tracking
See current planetary transits and WHY they affect your chart
Year Ahead Forecast
12-month transit forecast for planning major decisions
Numerology
Life Path, Expression, Soul Urge, and Personal Year numbers
Compatibility Analysis
Chart comparison for relationships (synastry)
Astrocartography
Find your power places on a global map
Daily Cosmic Digest
Personalized Do/Don't guidance for 6 life areas
Moon Phase Tracking
Real-time lunar phases and their meaning for you
AI Dream Interpretation
Cosmic symbolism analysis of your dreams
Cosmic Copilot vs other astrology apps
| Feature | Cosmic Copilot | Co-Star | CHANI | The Pattern |
|---|---|---|---|---|
| Calculation method | VSOP87 ephemeris | NASA-derived data (per their materials) | Swiss Ephemeris | Proprietary algorithm |
| Planetary accuracy | VSOP87 + reference tests | Not disclosed | Arc-second-level (Swiss Ephemeris) | Not applicable |
| House systems | 10 (Placidus, Whole Sign, Equal, Koch, etc.) | 1 (Placidus) | 1 (Whole Sign) | 0 |
| Transit explanations | Yes — shows WHY transits affect you | No | Limited | No |
| Astrocartography | Yes | No | No | No |
| Birth time rectification | Yes | No | No | No |
| Monthly price | £4.99 | $12.99 | $11.99 | $14.99 |
| Languages | 14 | 1 | 1 | 1 |
How Cosmic Copilot works
Enter your birth data
Date, time, and location of birth. A conversational onboarding guides you through it.
VSOP87 calculates your chart
Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. 10 house systems supported: Placidus, Whole Sign, Equal, Koch, Campanus, Regiomontanus, Morinus, Porphyry, Alcabitius, and Topocentric. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee.
AI interprets daily transits
Each day, current planetary positions are compared against your natal chart. AI explains what's happening and why.
Free tools
Birth Chart Calculator
Preview your Big Three (Sun, Moon, Rising) free. The full natal chart is available in the paid Cosmic app.
Compatibility Calculator
Check zodiac compatibility for love, friendship, and communication.
Numerology Calculator
Calculate your Life Path, Expression, and Soul Urge numbers.
Frequently Asked Questions
What is Cosmic Copilot?
Cosmic Copilot is an astrology app that uses AI to interpret a birth chart calculated with deterministic VSOP87 methods and IANA timezone data. Ask Cosmos is an AI astrologer chat grounded in your calculated chart; replies are AI-written, not from a human astrologer. The app supports 10 house systems: Placidus, Whole Sign, Equal, Koch, Campanus, Regiomontanus, Morinus, Porphyry, Alcabitius, and Topocentric.
How is Cosmic Copilot different from Co-Star, CHANI, or The Pattern?
Cosmic Copilot differentiates on three axes: (1) Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee. (2) Transparency — it shows WHY transits affect you, not just vague predictions; (3) Flexibility — it supports 10 house systems (Placidus, Whole Sign, Equal, Koch, etc.) vs 1 for most competitors. It also costs less at £4.99/month vs $12-15 for competitors.
How much does Cosmic Copilot cost?
Cosmic Copilot has a free tier and one paid plan. Free includes your Big Three (Sun, Moon, Rising), Moon phase, basic numerology, a 3-day Best Days preview, an emotional compatibility preview, 1 Ask Cosmos question a week, and 2 dream interpretations a month. The paid plan, Cosmic, is £4.99/month or £39.99/year and adds the full natal chart, transit tracking, full compatibility, year-ahead forecasts, astrocartography, 5 Ask Cosmos questions a day, and extended numerology. There is no free trial.
What calculations does Cosmic Copilot use?
Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee. The reference suite includes charts with documented birth times, including historical examples such as Einstein.
What languages does Cosmic Copilot support?
Cosmic Copilot is available in 14 languages: English, Spanish, French, German, Russian, Chinese, Portuguese (Brazilian), Turkish, Italian, Arabic, Vietnamese, Hindi, Japanese, and Korean. Both the app and the educational content site are fully localized.
What features does the paid plan include?
The Cosmic plan (£4.99/month or £39.99/year) includes: full natal chart with all planetary positions and aspects, real-time transit tracking with peak timing windows, detailed Do/Don't daily guidance for 6 life areas, compatibility analysis, year ahead forecast, astrocartography, AI dream interpretation, and export capabilities.
How does Cosmic Copilot handle privacy?
Birth data is stored securely in Supabase (PostgreSQL) with row-level security. Data is never sold to third parties. Users can export or delete their data at any time. The app complies with GDPR requirements.
Start with Cosmic
Your full natal chart, daily guidance with the transits behind it, and Ask Cosmos — £4.99/month or £39.99/year. Cancel anytime.
Start with Cosmic