Fact sheet · APIs & SDKs
FreeAstroAPI
High-performance astrology API for developers to calculate natal charts, transits, and synastry
High-precision natal charts, transits, and synastry calculations for astrology applications with support for Western, Vedic, and Chinese astrology systems.
Overview
FreeAstroAPI is a high-performance astrology API designed for developers to build astrology applications. It provides precise natal chart calculations, transit timelines, and synastry analysis using French Ephemeris Professional Licence for accuracy. The API supports multiple astrology systems: Western astrology with Tropical and Sidereal zodiacs, Vedic astrology with Kundli and Dasha systems, and Chinese BaZi (Four Pillars) metaphysics. Developers can generate themeable SVG and PNG natal charts with customizable themes and controls, access planetary positions for all major bodies, calculate house systems, and analyze aspects and geometric relationships between planets. The API offers clean JSON responses, zero-config integration with any HTTP-capable language, and includes features like AstroCartography, daily horoscope generation, and report credit systems for monetizing astrology apps.
Feature facts
- Natal chart calculations with planetary positions and house systems
- Multiple house systems including Placidus, Whole Sign, Koch, Equal, and Regiomontanus
- Vedic astrology with Kundli, Dasha systems, and Panchang calculations
- Chinese BaZi (Four Pillars) with Day Master strength and 12 Life Stages
- Transit timeline and synastry analysis for relationship comparisons
- Premium text reports with 8,000-9,000 words for monetization
- Hosted MCP server for AI tool integration and LLM files
- Geo city search with timezone and location lookup for birth data
Pricing
Pricing model: Freemium
Free: $0 with 80 requests/day. Entry: $8/month with 50,000 requests/month. High: $40/month with 500,000 requests/month. All tiers include hosted MCP access and commercial use allowed.
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FreeAstroAPI specifications
| Section | APIs & SDKs |
|---|---|
| Website | freeastroapi.com |
| Votes2 | 0 |
FreeAstroAPI metrics
| Metric | Value |
|---|---|
| Domain Rating | 31 no change since last check |
| Trust Flow | 2 no change since last check |
| Citation Flow | 27 no change since last check |
| Referring domains | 37 no change since last check |
| External backlinks | 111 no change since last check |
Fact: Ahrefs Domain Rating checked 12 Nov 2026, fact changed 11 Nov 2026. Fact: top topic Arts/Performing Arts (2). Fact: Majestic checked 11 Nov 2026, fact changed 11 Nov 2026. Link facts from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
FreeAstroAPI domain fact sheet
Open the fact sheet
| Domain age | 11 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | HOSTINGER operations, UAB |
| DNSSEC | Not signed |
FreeAstroAPI launch receipt sheet
What we have measured for FreeAstroAPI since it went live on SaaS Directory Info on 11 November 2026.
- 31 Domain Rating (Ahrefs)
first measured 11 Nov 2026 - 2 Trust Flow (Majestic)
first measured 11 Nov 2026 - 37 Referring domains (Majestic)
first measured 11 Nov 2026
Day 0 since launch. Next receipt: day 30, 11 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
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Step-by-step tips for before, during and after your launch, free to read on SaaS Directory Info.
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Frequently looked up
- Q1Is this API free to use?
- Yes, FreeAstroAPI offers a free tier with 80 requests per day forever, perfect for hobbyists, students, and testing. Paid plans starting at $8/month offer higher limits.
- Q2What astrology systems are supported?
- The API specializes in precise Western Astrology calculations and also supports Vedic Astrology with Kundli, Dasha, and Panchang systems, plus Chinese Metaphysics (BaZi/Four Pillars).
- Q3Can I use this for commercial applications?
- Yes, commercial use is permitted on all tiers including paid apps and subscription services, within your plan's quotas and rate limits. You may retain calculation outputs and sell personalized reports under your own brand.
- Q4What house systems are supported?
- The API supports multiple house systems including Placidus (default), Whole Sign, Koch, Regiomontanus, Equal, Porphyry, Campanus, and Topocentric.
- Q5Can I cancel my subscription anytime?
- Yes, there are no long-term contracts. You can cancel your subscription at any time from your dashboard.
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