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. Save your natal chart and read today’s sky against it, compare two charts with synastry that ranks every contact, score dignities and see the balance of a chart, and get the next solar or lunar return to the minute. Choose your house system — Placidus, Koch, Whole Sign and more — and follow an event timeline of ingresses, lunations and aspects.
What's inside
Your natal chart, saved in your own iCloud, with today’s transits
Synastry — two charts, every contact ranked
Dignities and balance, scored and ranked, with the shape of the chart
Solar and lunar returns to the minute, plus an event timeline
No account, no tracking, no data collection. Ephemeris Sky computes everything on your device, and anything you save syncs through your own iCloud — never our servers.
Questions
Does Ephemeris Sky work offline?+
Yes. Every calculation runs on your device, so it works with no internet connection. Anything you save syncs through your own iCloud whenever a connection is available.
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. There are no accounts, no analytics and no tracking, and we receive nothing. Anything you save is stored in your own private iCloud container, not on our servers.
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