For astro app studios · PK · IN · BR · ID · VN

Swiss Ephemeris: 6 months of dev or $1,497

Production-ready astrology API. Natal chart, transits, dashas - from $1,497 one-time license. No reinventing the ephemeris wheel.

Backend API License $1,497 · Premium $2,997 (50K req/day + 10 widgets) · 50% prepay · Payoneer · DolarApp

Async-only · Written brief · No calls

API License $1,497 · one-timePremium $2,997 · 50K req/daySwiss Ephemeris · arcsecond precision

The from-scratch dev math

Swiss Ephemeris is not "install a lib". It's 6 months of specialized work - or $1,497 today.

Swiss Ephemeris integration (C binding → wrapper)	6–8 weeks	1 senior dev
Coordinate system + ayanamsa setup	2–3 weeks	Lahiri, Krishnamurti, Raman
House systems (Placidus, Koch, Whole Sign)	2 weeks	heavy QA required
REST API + docs + rate limiting	2–3 weeks	full infra
Transits + Dashas (Vimshottari)	3–4 weeks	full Vedic system
TOTAL dev time	15–20 weeks	$18,000–$30,000 in dev cost
With 27mirrors API License	Day 1	$1,497 one-time · production ready

Enter a birth date, time, and place. Get the real JSON response your app would receive.

27mirrors API Playground

POST /v1/natal-chart

Birth date

Birth time

Birth place

// JSON response

// Run a query to see response…

POST/v1/natal-chartFull natal chart (planets, houses, aspects, ayanamsa)

POST/v1/transitsCurrent planetary transits vs natal chart

POST/v1/dashasVedic Vimshottari Dasha system - full cycles

POST/v1/compatibilitySynastry: compatibility between two charts

POST/v1/solar-returnSolar return chart for any year

GET/v1/ephemerisPlanetary positions for any date/time/location

Backend API License

$1,497

one-time · $79/mo optional SaaS

10K req/day · 6 endpoints

✅Access to 6 core endpoints (Natal, Transit, Dasha, Synastry, Solar Return, Ephemeris)
✅10,000 req/day · response times <150ms
✅Swiss Ephemeris under the hood - arcsecond precision
✅Ayanamsa support: Lahiri, Krishnamurti, Raman, Fagan-Bradley
✅4 house systems: Placidus, Koch, Whole Sign, Equal
✅Full documentation + example SDK (Python / Kotlin / Swift)
✅Backend license only - not for API resale
✅$79/mo optional SaaS - for ongoing updates and support
✅50% prepay = $750 · remaining $747 on go-live

For scaled apps

Premium · Bulk + Widgets

$2,997

one-time · $1,500 prepay

50K req/day · 10 frontend widgets

PayoneerDolarAppGalicia USD wire

No Gumroad · No LemonSqueezy · No platform fees

Can I use the API in production from Day 1?: Yes. After the $750 prepay you receive API keys and full documentation. Most integrators are in production within 3-5 business days.
Is it compatible with React Native, Flutter, and SwiftUI?: The API is pure REST - works from any stack. We provide example SDKs in Python (backend), Kotlin (Android), and Swift (iOS). Flutter and RN consume the REST API directly.
How accurate is Swiss Ephemeris vs competitors?: Swiss Ephemeris is the #1 library used by Astro.com, AstroSeek, and most serious apps. Arcsecond precision (1/3600 of a degree). Competitors with "AI astrology" use approximate lookup tables - visible difference in minor aspects.
Can I resell the API to other developers?: No. The backend license covers usage in your own app/platform. API resale requires a separate Enterprise plan. Contact us for that.
What happens if I exceed the request limit?: Soft throttling - excess requests return 429 with a Retry-After header. No surprise extra costs. If you consistently exceed the limit, upgrade to the Premium tier ($2,997).
What payment methods do you accept?: Payoneer · DolarApp · Galicia USD wire. No Gumroad, no LemonSqueezy. $750 prepay for $1,497 tier; $1,500 prepay for $2,997 tier.

API License $1,497 one-time · Premium $2,997 · 50% prepay · Async · No calls