9 min read
Plan Your Best and Worst Days with Biorhythm Forecasting
Use biorhythm forecast data to identify your best days, worst days, and critical transitions up to 90 days out.
Blog
Insights, tutorials, and updates from the RoxyAPI team
Recent Posts
10 min read
How Biorhythm Energy Ratings Work: The 1-10 Scale Explained
The biorhythm energy rating condenses three primary cycles into a 1-10 score. Learn how the scale works and how to display it.
10 min read
10 Biorhythm Cycle Types That Most Calculators Miss
Most biorhythm tools only show 3 cycles. Learn all 10 biorhythm cycle types including secondary and composite cycles that unlock richer wellness apps.
8 min read
Biorhythm Critical Days: What Zero Crossings Mean
Biorhythm critical days occur when cycles cross zero. Learn about single, double, and triple critical day severity and how to track them with an API.
9 min read
Biorhythm Compatibility Scoring for Dating and Relationship Apps
Biorhythm compatibility gives dating apps daily-changing match scores. Learn how the API works for relationship platforms.
9 min read
Biorhythm API: What It Is, How It Works, and How to Use It
A biorhythm API calculates physical, emotional, and intellectual cycles from a birth date. Learn how it works and how to integrate it.
9 min read
Give Your AI Agent Biorhythm Intelligence with MCP
Connect your AI agent to biorhythm data via MCP. 6 tool calls, structured JSON, works with Claude, ChatGPT, Cursor, LangChain, and CrewAI.
9 min read
Zodiac Sign API: Birthdate to Full Profile in 5 Minutes
Turn any birthdate into a zodiac sign, natal chart, daily horoscope, and compatibility score. Four endpoints, one API key, five minutes.
10 min read
VSOP87 vs JPL DE440: Which Planetary Ephemeris to Use
Compare VSOP87 and JPL DE440 planetary ephemeris models for accuracy, speed, and file size. Find out which fits your astrology app or astronomy project.
11 min read
Vimshottari Dasha Calculation: A Developer Guide
Learn the vimshottari dasha calculation algorithm, the 120-year planetary period system, and build dasha timelines with a working API.
9 min read
How to Verify Astrology Software Against NASA JPL
Learn to verify astrology accuracy using NASA JPL Horizons as ground truth. Step-by-step guide with tolerance thresholds, common errors, and automated testing.
9 min read
Tarot Data Model for Software: Cards, Spreads, Readings
How to design a tarot data model for applications. Covers card schemas, spread definitions, reading objects, database tables, and working API examples.
Featured Posts
13 min read
Best Tarot APIs for Developers 2026: Features and Pricing
Compare the best tarot APIs for developers: 78-card decks, spreads, seeded draws, card images, MCP, and flat pricing reviewed by RoxyAPI.
12 min read
Best Vedic Astrology API for Kundli and Panchang 2026
Compare RoxyAPI, AstrologyAPI, and Prokerala for kundli, panchang, dasha, and KP: fact-checked features, pricing, and real cost math.