The charts are drawn using vector graphics, the resulting chart can scale and look nice at any resolution.
Stellaria foundations are the famous Swiss Ephemeris for very accurate astronomical computation.
You can share the generated chart on Facebook or Twitter, or send it by email in PDF format.
The app can look for cities and timezones in a large database. It also automatically compute daylight saving time.
Stellaria is configurable, and is able to display up to 25 different celestial bodies and 15 house systems.
You can print your charts directly from the device, or export them as PDF for later printing.