The First Synastry API That Actually Understands Relationships
Synastry API: AI-Powered Compatibility Analysis in Under 300ms
Enterprise Performance Metrics
Built for scale, optimized for speed
Complete Relationship Compatibility Analysis
From basic aspects to AI-driven relationship intelligence
Synastry Analysis
Interpretations
Cultural Traditions
Integration Tools
What is Synastry API? Complete Developer Guide
Everything developers need to add professional compatibility analysis
The Synastry API analyzes relationship compatibility like GPS handles navigation - it shows you the route AND the obstacles. Instead of basic matches like 'Leo matches Sagittarius,' it calculates 47+ planetary interactions between two birth charts in under 300ms. For dating app developers, that means upgrading from 'you both like hiking' to 'strong Venus-Mars connection suggests instant attraction, but Saturn aspects mean this relationship needs commitment to thrive.'
What is Synastry API and how does it work?
The Synastry API analyzes relationship compatibility like GPS handles navigation - it shows you the route AND the obstacles.
Instead of basic matches like 'Leo matches Sagittarius,' it calculates 47+ planetary interactions between two birth charts in under 300ms.
Think of it this way: if individual birth charts are personality profiles, synastry reveals how those personalities interact.
Where's the chemistry? Where are conflicts? Our API processes inter-chart aspects, house overlays, and composite charts.
Why is professional synastry better than basic compatibility?
Basic astrology compatibility is like judging a movie by its poster.
Professional synastry analyzes the entire 'film' - plot, character development, and how everything connects.
Most dating apps use sun sign compatibility: 'Fire signs match air signs.' That's one data point of hundreds possible.
Professional synastry examines 10+ relationship dimensions including emotional connection, communication style, physical chemistry, and long-term potential.
How to integrate synastry analysis into dating apps?
Integrating synastry analysis takes about 4 hours for basic implementation, 2-3 days for advanced features.
Step 1: Collect birth data - date (required), time (preferred), location (required).
About 70% of users provide birth time when you explain it improves matches.
Step 2: API integration - send two user profiles to the /synastry endpoint, receive compatibility breakdown in JSON.
Step 3: Display options - show compatibility percentages, detailed reports, or conversation starters.
What differentiates the Synastry API from competitors?
Most astrology APIs deliver raw data and expect developers to figure out interpretation.
We deliver the 'so what?' that users actually want.
Depth comparison: competitors offer basic planetary positions.
We deliver complete relationship intelligence - aspects, house overlays, composite charts plus explanations in plain language.
Speed advantage: manual synastry analysis takes professional astrologers 2-3 hours.
We deliver comprehensive relationship insights in a single 300ms API call.
Use Cases
Dating Apps
Transform superficial swiping into meaningful connections with multi-dimensional compatibility analysis
Relationship Counselors
Save 2-3 hours per couple analysis with professional synastry reports
Content Creators
Generate unique relationship content with celebrity compatibility analyses
Corporate Wellness
Analyze team dynamics and workplace compatibility to improve collaboration
Technical Specifications
| API Response Time | <300ms average, 150ms for basic compatibility |
| Compatibility Dimensions | 10+ areas analyzed (emotional, communication, physical, spiritual) |
| Planetary Interactions | 47+ inter-chart aspects calculated per analysis |
| House Overlays | 12 house overlay interpretations included |
| Composite Charts | Complete composite chart analysis and interpretation |
| Cultural Support | Western, Vedic, and Chinese astrology traditions |
| Relationship Types | Romantic, friendship, business, family dynamics |
| Required Birth Data | Date, time (preferred), location with timezone handling |
Synastry API vs Competitors
| Feature | Astrology API | Others |
|---|---|---|
| Response Time | <300ms complete analysis | Manual calculation or multiple API calls |
| Analysis Depth | 47+ planetary interactions | 5-10 basic aspects |
| Interpretation | Relationship insights in plain language | Raw astrological data only |
| Relationship Types | Romantic, friendship, business, family | Generic compatibility only |
| Cultural Support | Western, Vedic, Chinese traditions | Western astrology only |
| Price | $37/month for 55K analyses | $99-299/month for basic features |
Related Astrology APIs
Birth Chart API
Individual birth chart analysis before relationship compatibility
Composite Chart API
Analyze the relationship itself as a unique entity
Transit API
Timing guidance for relationship developments and phases
Compatibility API
Simplified compatibility analysis for basic matching features
API Documentation
Complete technical reference for all endpoints
Simple, Transparent Pricing
Start free, scale as you grow. No hidden fees, no surprises.
Pro
For small apps and personal projects
- All basic endpoints
- 12 house systems
- Email support
Pro Plus
For growing apps and medium traffic
- All enhanced endpoints
- 18 house systems
- AI interpretations
- Priority email support
- All premium endpoints
- 23 house systems
- Advanced AI interpretations
- Priority support
High Volume Plans
For enterprise-scale applications
All plans include comprehensive documentation and SDKs
Questions? Talk to our team
Frequently Asked Questions About Synastry API
Real answers to real questions - no corporate BS
Complete Your Astrology Stack
The Synastry API works best combined with our other tools. Add