It's free! Just download and study the sky right away!

Point your iPhone to the sky and watch the fascinating movements of the sun, moon, visible stars, and even planets while you swipe the sky view to change time. Toggle the AR button to enable camera to see the sun, moon, planets through the camera of your phone!

• Predict the positions of the sun and the moon for any time for your position.
• Sunrise, sunset for any given date - just swipe the sky view. Click on date to go back to current time.
• Moonrise, moonset for any given date.
• Today widget for quick view
• Notifications
• By swiping the sky view, you change the time and date and the app shows the position of sun and the moon, moon phase, next new or full moon after the chosen date, and how much the daytime has increased since last solstice (December & June) and since Yesterday.
• Swipe fast (fast forward/rewind in time) by using two or three fingers.
• Tap on the info text to toggle between help text and the calculated data.
• Pinch to zoom
• Tap on the sun or the moon to zoom in and center them on screen.

Today Widget
• A today widget gives fast access to the essential data about sun and moon, including a red arrow pointing in its direction. Excellent when you only need a quick glance at when the sun sets and it gets dark

• Local notifications notify you of sunset, sunrise, new moon, full moon, solstice, equinox (the sun passes equator and day and night have nearly equal length), and these can be turned on or off. Sunset notification can be sent 30 minutes before sunset -- very convenient if you plan on going for a walk to enjoy the sunset.
• Choose in Settings which notifications you would like and which you would like to turn off.
• The notifications are calculated and updated when the app launches, so if you move long distances the notification will be valid for your previous location. Then just click on the notification, and you will enter the app which recalculates and updates the notification for your new location.
• No unsolicited notifications! Only notifications related to sunsets, solstices, equinox etc.

Share Button
• Share to friends and involve them in the fascinating world of Sun and Moon watching, in a Text, Mail, or on social network, beautiful graphics of the sun and the moon including its phase information, the rise and set times, for any given date you choose.
• In a globalized world, with friends around on the planet, have fun comparing the different duration of day, sunrise, sunset.

Change View
• You can change between Sky View and Space View, where each cellestial body's position in space is carefully and correctly calculated, however distance and sizes of sun and moon have been resized to make them visible.

The moon phase text field shows the moon's illumination, and if the moon is in the Earth's shadow it changes to Lunar Eclipse (0-100 %), and if the moon covers the sun for your position, the text changes to Solar Eclipse (0-100 %.)

See how sunrise and sunset times differ when you travel during the day.

It will work outside network coverage, and in flight mode, however showing your location as an address requires internet connection. With no internet, it simply shows your coordinates and altitude.

This app utilizes the gps and compass in your phone to calculate the positions of the sun, moon, planets, and stars, so it will not work on a iPod Touch as it does not have a compass.

* Also: Look at my new other app, Sun and Moon Tracker 3D Pro which has more features, can be rotated for greater view, and has planet markers, among other things. *

And remember, never look directly at the real sun.

Disclaimer. This app calculates the sun and moon positions very accurately with an error margin of up to only 0.3°, which is good in most cases, however, always refer to table values for most accurate calculations of solar eclipse and the like, since they require more powerful calculations.

What's New

Version 4.2.1

• Ads have been removed

Ratings and Reviews

4.6 out of 5

163 Ratings

163 Ratings

Too technical


I do enjoy how the map reflects my location and immediately identifies elements in the sky. That being said, all the other info is VERY scientific, so if you need all those measurements, enjoy all those details, and understand them - this is the app for you.

Developer Response

Hi Sampam66, thanks for trying out this totally free and ad-free app, and thanks for writing a review. While it gives scientific info, it also gives notifications (if the app has notification permissions) when the sun sets (and other events) and notifications do not need the app to open. I take your review as valuable feedback, you are right, it is perhaps a little scientific, and I will work on creating a toggle-to-hide the info in the bottom of the display. The Pro-version actually does this (hides the info) when tapping the info field, in addition to being able to be rotated to landscape mode which hides the textual info.

Gyroscope/compass need adjustment


This is a great app, but my compass coordinates are off and I can't find a way to straighten them. Help?

Thank you very much!

Developer Response

Hi LoganL2, thanks for your review and thanks for using this app! Yes, there are some challenges with the gyroscope and compass actually, often noticeable using AR, but I have already implemented a solution for that: (Gyroscope -- if your device keeps rotating): Click on the sky to reset the motion sensors. A message with two arrows is shown below the date for two seconds to indicate the sensors are reset. The gyro-sensor measures rotations (to make it react more quickly than only accelerometer and compass) and in some cases the phone still thinks it is rotating, which will stop by resetting the motion sensors. (Compass -- if the sun, moon and planets are off by several degrees) Press and hold on the sky view. A number showing degrees of compass deviation compensation starting from zero appears below the date field. The compass in the phone is not particularly accurate, which made me create this compass compensation function. If you hold and release your finger right away, compensation is back to 0°. I implemented this in a previous version, when the compass deviations irritated me, and learned that simply resetting sensors was not enough because magnetic disturbances could come from other sources that would not go away.

Great App for a Newbie!


I didn’t know that the planets set in the west!

Developer Response

It is fascinating, and with this free app, you can so easily visualize it by moving back or forward in time, by simply swiping the sky to the left or to the right, to conclude that the sun, the moon, and the planets set in the west. If you click to change the view so you see the Earth from space and then do the swiping, then it becomes obvious because our planet rotates so fast that everything sets in the west. I hope you enjoy the app.


Henning Poulsen
49.4 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, Danish, Faeroese, French, German, Japanese, Norwegian Bokmål, Spanish, Swedish
Age Rating
Rated 4+
© 2018 Henning Poulsen


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like