Starspot: Night Sky Star Map

Point your phone at the night sky and see the names of the stars, the Moon, planets and the International Space Station (ISS) right where they are.

■ Stars and constellations Names of 112 bright stars and 18 constellations and star patterns, including Orion, the Big Dipper and Cassiopeia. Tap a star to see how bright it is and where it is.

■ Tonight's Moon See the Moon's real shape tonight, from crescent to full. Check its age, when it rises and sets, and the dates of the next phases.

■ Find the planets See where Mercury through Neptune are right now and whether you can see them with the naked eye. Tap "Find" and an arrow points the way.

■ Sky events calendar for where you are Solar and lunar eclipses, meteor showers, planets lining up, the Moon meeting planets, supermoons and more, with whether you can see them from your location, when to look and in which direction.

■ Track the ISS live See which country or ocean the ISS is flying over on a world map, when it next passes over you, and whether you'll be able to see it.

■ Auto-correction with the Sun and stars By day the camera finds the Sun, by night the stars, and lines everything up with the real sky to fix your phone's compass error.

■ Learn as you look Short explanations of why the Moon looks red or big, how many years ago a star's light set out, and why each sky event happens.

■ No camera needed Move around the sky with your finger in "Explore without camera" mode and learn the constellations.

■ Starspot Pro (in-app purchase) One purchase removes the ads and unlocks:

• Time travel: preview the sky at 10 p.m. tonight or next week, and find those spots with your camera.
• Alerts: get a notification 10 minutes before the ISS passes over you, and before eclipses, meteor showers and supermoons. Watch one ad to try the Pro features free for tonight.

■ Your privacy No sign-up. Camera video and your location are used only on your phone and are never sent anywhere. The app shows ads to stay free.