Build Apps That Predict Relationship Success
Stop guessing if two people are compatible. Analyze 10+ relationship factors in real-time - like relationship GPS that actually works.
Professional Synastry Analysis Capabilities
Comprehensive relationship intelligence that rivals $200+ astrologer consultations
Professional Synastry vs Basic Compatibility
Why developers choose our relationship analysis API
Analysis Depth
Response Time
Accuracy Rate
Personalization
Cost per Analysis
Integration
Professional Synastry Features That Actually Matter
Go beyond basic sun sign compatibility with techniques used by professional relationship astrologers
Love Language Analysis
Emotional Compatibility
Core Personality Match
House Overlays
Composite Charts
Communication Patterns
What is Synastry API? Complete Developer Guide
Everything developers need to add professional relationship compatibility analysis
Synastry API analyzes relationship compatibility like GPS does navigation - it shows you the route AND the roadblocks. Instead of basic "Leos go with Sagittarius" matching, it calculates 47+ planetary interactions between two birth charts in under 300ms. For dating app developers, this 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." That's the difference between guessing and knowing.
What is Synastry API and how does it work?
Synastry API analyzes relationship compatibility like GPS does navigation - it shows you the route AND the roadblocks.
Instead of basic "Leos go with Sagittarius" matching, it calculates 47+ planetary interactions between two birth charts in under 300ms.
Think of it like this: if individual birth charts are personality profiles, synastry reveals how those personalities interact.
Where do they spark chemistry? Where do they clash? Our API processes inter-chart aspects, house overlays, and composite charts to answer those questions with mathematical precision.
The calculations use Swiss Ephemeris precision (NASA-level accuracy) combined with traditional astrological principles refined over thousands of years.
Result: relationship insights that feel eerily accurate to users, keeping them engaged with your app.
Why is professional synastry better than basic compatibility?
Basic astrology compatibility is like judging a movie by its poster.
Professional synastry analyzes the entire "movie" - plot, character development, and how everything connects.
Most dating apps use sun sign compatibility: "Fire signs go with Air signs." That's one data point out of hundreds possible.
Professional synastry examines 10+ relationship dimensions including emotional connection (Moon aspects), communication style (Mercury interactions), physical chemistry (Mars-Venus aspects), and long-term potential (Saturn connections).
Professional astrologers charge $200-500 for this level of analysis because it requires hours of manual calculations.
We deliver the same depth in 300ms for under $1 per analysis.
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 /synastry endpoint, receive compatibility breakdown in JSON.
Step 3: Display Options - Show compatibility percentages, detailed reports, or conversation starters.
Most apps start with basic scoring, then add premium detailed analysis.
Average implementation sees 60-120% increase in premium subscriptions.
Technical Benefits: 280ms average response time handles real-time swiping with global CDN and intelligent caching.
What makes synastry API different from competitors?
Most astrology APIs dump raw data and expect developers to figure out interpretation.
We provide 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 plain-English explanations.
Speed Advantage: Manual synastry analysis takes professional astrologers 2-3 hours.
We deliver comprehensive relationship insights in a single 300ms API call.
Business Focus: While competitors target individual astrology enthusiasts, we're built for developers creating relationship features.
Cultural Intelligence: Supports Western, Vedic, and Chinese relationship analysis.
Perfect for apps with diverse user bases.
Use Cases
Dating Apps
Transform shallow swiping into meaningful connections with multi-dimensional compatibility analysis that increases premium subscriptions by 127%
Relationship Counselors
Save 2-3 hours per couple analysis with professional synastry reports that provide objective relationship assessment
Content Creators
Generate unlimited unique relationship content with celebrity compatibility analysis and personalized insights
Enterprise Wellness
Analyze team dynamics and workplace compatibility to improve collaboration and reduce professional conflicts
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 | Full composite chart analysis and interpretation |
| Cultural Support | Western, Vedic, and Chinese astrology traditions |
| Relationship Types | Romantic, friendship, business, family dynamics |
| Birth Data Required | Date, time (preferred), location with timezone handling |
| Accuracy Level | Swiss Ephemeris precision (NASA-level accuracy) |
| Integration Time | 4-6 hours basic, 2-3 days full implementation |
Synastry API vs Competitors - Why We're The Clear Choice
| Feature | AstroAPI | Others |
|---|---|---|
| Response Time | <300ms complete analysis | Manual calculation or multiple API calls |
| Analysis Depth | 47+ planetary interactions | 5-10 basic aspects |
| Interpretation | Plain-English relationship insights | Raw astrological data only |
| Relationship Types | Romantic, friendship, business, family | Generic compatibility only |
| Cultural Support | Western, Vedic, Chinese traditions | Western astrology only |
| Developer Focus | Built for apps with UI examples | Individual astrology enthusiasts |
| Business Intelligence | Conversation starters, date ideas, advice | Technical calculations only |
| Pricing | $37/mo for 55K analyses | $99-299/mo for basic features |
Related Astrology APIs
Natal Chart API
Individual birth chart analysis before relationship compatibility
Composite Chart API
Analyze the relationship itself as a unique entity
Transit Analysis API
Timing guidance for relationship developments and phases
Compatibility API
Simplified compatibility analysis for basic matching features
Personalized Horoscopes API
Daily guidance for individuals and relationship forecasts
API Documentation
Complete technical reference for all astrology endpoints
Synastry API Questions & Answers
Everything developers need to know about relationship compatibility analysis
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