Supporter membership

Asteria is free to use. A yearly supporter membership adds extra planning features, and pays for Asteria's development and the forecast data behind it.

Asteria is an astronomy app: an interactive map of the real night sky, computed for your location, with observing conditions and celestial events. It has nothing to do with astrology or horoscopes.

What you get

	Free	Lunar	Solar
Price	€0	from €1/month €12 billed yearly	from €2/month €24 billed yearly
Detailed forecast, with a comparison of several cloud models	Tonight	3 nights	7 nights
Upcoming nights scan (when a target is best placed and how dark it gets)	30 nights	90 nights	1 year
Cloud forecast used for advice (the diagram, events, night scan and planner)	Best match	Best match, Average, Cautious	Any single model

Everything else in Asteria (the sky map, events, the tour, your equipment and saved locations) is free for everyone. More supporter benefits are coming.

Prices

Lunar from €1 a month, Solar from €2 a month, billed once a year: €12 and €24 per year.
You choose how much: €1, €1.50, €2, €3, €5 or €10 a month, billed once a year (€12, €18, €24, €36, €60 or €120). The amount decides the tier: €1 or €1.50 a month makes you a Lunar supporter, €2 or more a Solar supporter.
Prices are in euros and include VAT or sales tax.

How it works

Become a supporter in Asteria: open the menu and choose Support Asteria. A free Asteria account is needed, so your benefits follow you to all your devices.
Yearly renewal: your membership renews automatically every year at the same amount. You can stop the renewal at any time in Asteria (menu → Support Asteria); you keep your benefits until the end of the year you paid for, and you can resume until then.
One year without renewal: you can also buy a single year that does not renew.
Changing your amount: a higher amount that moves you to Solar is charged straight away for the rest of your current year (you see the exact amount before you confirm); any other change applies from your next renewal.
Payment: our online reseller Paddle handles the payment and sends your receipt. You can pay by card, PayPal, Apple Pay or Google Pay; for a single year also by iDEAL in the Netherlands or Bancontact in Belgium. Your receipt links to Paddle's customer portal, where you can update your payment method and download invoices.
Refunds: changed your mind? You get a full refund within 14 days of any payment, no questions asked. See the refund policy.

Read the terms of service and how we handle your data in the privacy policy.