Find Your Perfect Love Match with Cosmic Intelligence
Professional compatibility API with synastry analysis, relationship scoring, and love matching using Swiss Ephemeris precision. Perfect for dating apps, relationship platforms, and astrology services.
Compatibility Analysis Performance
Professional-grade relationship insights at scale
Complete Relationship Analysis Suite
Everything needed for professional compatibility assessment
Synastry Analysis
Compatibility Scoring
Aspect Analysis
House Overlays
Composite Charts
Relationship Timing
Communication Styles
Love Languages
Customizable Factors
Perfect for Modern Relationship Platforms
Enhance your app with professional astrological insights
What is Compatibility API? Complete Relationship Analysis Guide
Professional synastry analysis and love compatibility for modern applications
Compatibility API calculates professional astrological relationship analysis in under 180ms. Unlike basic zodiac matching that only looks at sun signs, our API analyzes 20+ compatibility factors including Venus-Mars dynamics, house overlays, synastry aspects, and composite chart insights. Perfect for dating apps, relationship platforms, and astrology services that need accurate, scalable compatibility calculations. With Swiss Ephemeris precision and standardized 0-100 scoring, it's like having a professional astrologer analyze every relationship in your app instantly.
How does astrological compatibility work?
Astrological compatibility goes far beyond sun sign matching.
Our API analyzes the mathematical relationships between two birth charts, looking at how planets interact across both charts.
The most important factors include Venus (how you love) with Mars (how you pursue), Moon signs (emotional compatibility), rising signs (first impressions), and house overlays (where your partner's energy lands in your life areas).
We calculate planetary aspects like conjunctions (unity), trines (harmony), squares (tension), and oppositions (polarity).
Each aspect is weighted by strength, orb (how close the angle is), and traditional astrological significance.
The result is a comprehensive compatibility analysis that reveals relationship strengths, challenges, and growth opportunities.
What makes our synastry analysis different?
Most compatibility tools only look at sun signs or maybe include moon signs.
Our API performs complete synastry analysis like professional astrologers, examining all planets, houses, and aspects between two charts.
We include composite chart calculations (mathematical midpoints creating the relationship's unique chart), house overlay analysis (where your partner's planets land in your houses), and progressive timing (how the relationship evolves).
Our Swiss Ephemeris calculations ensure NASA-level precision for planetary positions.
The API returns detailed JSON with compatibility scores, aspect explanations, strength ratings, and practical relationship insights.
It's the difference between asking "Are Libras compatible with Scorpios?" and getting a complete relationship roadmap.
How to integrate compatibility analysis into your app?
Integration takes about 15 minutes with our RESTful API.
Send two sets of birth data (date, time, location) via POST request and receive comprehensive compatibility analysis as JSON.
The response includes overall compatibility score (0-100), category breakdowns (romantic, communication, long-term potential), detailed aspect analysis, and human-readable interpretations.
Perfect for dating apps wanting deeper matching, relationship platforms providing insights, or astrology services offering professional analysis.
Our API handles edge cases like unknown birth times, time zone conversions, and historical date calculations automatically.
Rate limiting prevents abuse while allowing high-volume applications to scale effectively.
Why is mathematical precision important in compatibility?
Astrological compatibility depends on exact planetary positions and angular relationships.
A Venus-Mars trine at 119° creates harmony, but at 125° it's no longer a trine - precision matters for accurate analysis.
Our Swiss Ephemeris calculations match professional astrology software to the arc-second, ensuring consistent results.
Many compatibility apps use approximated planetary positions or ignore important factors like house systems, lunar nodes, and asteroid placements.
We calculate exact aspects with proper orbs, consider planetary strength by sign and house, and include modern factors like Chiron, North Node, and Part of Fortune.
This mathematical precision translates to compatibility insights that actually reflect relationship dynamics rather than generic descriptions.
Use Cases
Dating Applications
Deep compatibility matching beyond swipe-based preferences
Relationship Platforms
Professional insights for couples and relationship coaching
Team Building Tools
Workplace compatibility and team dynamic analysis
Social Networks
Friendship compatibility and community building features
Technical Specifications
| API Response Time | <180ms average, <250ms p99 |
| Compatibility Factors | 20+ including aspects, houses, composites |
| Calculation Precision | Swiss Ephemeris arc-second accuracy |
| Supported Aspects | 50+ major and minor aspects with orbs |
| House Systems | Placidus, Koch, Equal House, Whole Sign |
| Scoring Range | 0-100 standardized compatibility scores |
| Birth Time Handling | Unknown time rectification and solar charts |
| Historical Range | 1800-2200 CE with full accuracy |
| Output Format | JSON with detailed breakdowns and explanations |
| Rate Limiting | 1000 requests/minute with burst allowance |
| Error Handling | Comprehensive validation and graceful fallbacks |
| Composite Charts | Mathematical midpoint calculations included |
Compatibility API vs Traditional Solutions
| Feature | AstroAPI | Others |
|---|---|---|
| Analysis Depth | 20+ compatibility factors | Sun sign only |
| Calculation Time | <180ms response | 2-4 hours manual |
| Professional Cost | $0.004 per calculation | $150-500 per reading |
| Precision Level | Swiss Ephemeris accuracy | Approximated positions |
| Integration Effort | 15 minutes API setup | Weeks of development |
| Scalability | 1000+ calculations/minute | Single reading at a time |
| Consistency | Identical results every time | Varies by astrologer |
| Customization | Weighted factors via API | Fixed interpretation style |
Related Astrology APIs
Synastry API
Detailed inter-chart aspect analysis and relationship dynamics
Composite API
Midpoint calculations for relationship chart creation
Transit API
Relationship timing and progressive aspect analysis
Natal API
Individual birth chart calculations for compatibility input
API Documentation
Complete technical reference and code examples
Frequently Asked Questions
Simple, Transparent Pricing
Start free, scale as you grow. No hidden fees, no surprises.
Starter
For small apps and personal projects
- All basic endpoints
- 12 house systems
- Email support
Professional
For growing astrology applications
- All enhanced endpoints
- 23 house systems
- AI interpretations
- Priority support
Business
For high-volume applications
- ALL endpoints
- White-label ready
- Phone support
All plans include comprehensive documentation and SDKs
Questions? Talk to our team