Ephemeris Sky
The sky, computed for any moment.
Turn any moment into a precise picture of the solar system. Ephemeris Sky computes real geocentric planetary positions, the aspects between them, and a live chart wheel for any date and time — and tracks each planet’s synodic cycle so you always know when the next retrograde begins.
What's inside
Real geocentric planetary positions
Aspects and a live chart wheel
Tracks retrogrades, conjunctions & elongations
100% on-device, no account, works offline
No account, no tracking, no data collection. Ephemeris Sky works fully offline.
Questions
Does Ephemeris Sky work offline?+
Yes. Ephemeris Sky runs entirely on your device, so it works with no internet connection.
Is there an account or subscription?+
No. There's no sign-up, no login, and no subscription — just download Ephemeris Sky from the App Store and open it.
What data does Ephemeris Sky collect?+
None. It collects, stores, and transmits zero personal data — nothing ever leaves your device.
Which devices are supported?+
Ephemeris Sky is available for iPhone, iPad & Mac.
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Get Ephemeris Sky
The sky, computed for any moment. On-device, no account, no tracking.
Download on theApp Store