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StarTrack & StarTracker HD, iPhone4 and iPad2 exclusive!

2011 July 22

It’s so excited to introduce you the best star gazing app on iPhone4 and iPad2!

This is a Star Gazing application which will guide you to recogonize all the bright stars in the night sky! Just hold up and point the phone at the sky to see what stars, constellations and deep sky objects you are looking at in realtime. Full utilization of the build-in gyroscope, digital compass and accelerometer drive the best user experience.

With the cutting edge signal processing technique, gyroscope and the raw data directly from the build-in digital compass chip instead of the existing degree provided by Core Location API, this app has a super reaction speed and high accruacy, you must try it out and see how fast it is ;)


★ Augmented Reality! With iPhone 4, the build-in gyroscope will be fully utilized and combined with the accelerometer/compass in order to offer you a full position sensitive experience. Just hold up and point the phone at the sky to see what stars, constellations and deep sky objects you are looking at in realtime.

★ Over 8000 stars with magnitude less than 6.5, which can be observed by naked human eyes in the evening.

★ Over 100 deep sky objects with magnificent graphics.

★ Gorgeous Moon phase display, Sun and all planets in Solar System.

★ 88 Constellations with sketch line highlight.

★ The 3D compass in a fantastic crystal ball will always point to the True North, no matter how you rotate or position the phone.

★ User can search and lock the objects in Solar system, 12 Zodiac Constellation, 88 Constellation, Deep Sky Object and Famous Stars. You will see the current position of the identified object simultaneously on the 3D compass ball.

★ Location will be retieved by GPS and user can also set any other location on the world.

★ Time and date can be adjusted smoothly, for user to see the motion of the stars at anytime.

★ Smooth motion flow and quick response which is realized by cutting edge signal processing technique.

★ Superb high quality graphic display by enabling the retina display of iPhone4 and the full screen anti-aliasing technology employment.


★ On the Buttom Right there is the main menu expand icon which can hide/show the main menu, user can adjust the diaplay of name, constellation, deep sky object, night mode, star amount and grid mode by the different tabs on the menu.

★ On the Top Right there is the search menu, which have 5 tabs (Solar system, 12 Zodiac Constellation, 88 Constellation, Deep Sky Object and Famous Stars) that allow user to search the object.

★ On the Top Left there is the location menu, which let user to choose your current location from a world map.

★ On the Top bar is the time/date adjust menu, which let user to adjust any time/date and see the motion of the stars at anytime.

★ On the Buttom Left is the Compass indicator when in star track mode, if under un-track mode, it’s the track button to return to track mode after click it.

★ User can pan the sky to enter un-track mode and click track button to return to track mode.


★ When user search any object under un-track mode, the object will be locked at the center of the screen, then user can adjust time/date to see changes of the related sky.

★ When under un-track mode, use can lift up the screen and point it to the sky to enter track mode.

IMPORTANT: Star Tracker using the build-in gyroscope of iPhone4/iPad2 and not support the other models.

Screenshot for StarTracker on iPhone4:

StarTracker for iPhone4 is  $2.99! Get it from:

Screenshot for StarTracker HD on iPad2:

StarTracker HD for iPad2 is  $3.99! Get it from:

3 Responses Leave One →
  1. July 30, 2011

    Function is very good, worth it…

  2. Mak permalink
    September 4, 2011

    Not sure how to hold iphone4 for use with Star Tracker. Start Tracker givs different pictures depending on how it is being held. When it says “point iphone at sky,” which end of the iphone should be pointed? The flat part? The edge? I wish there was a video of using it!”

  3. Rick Clark permalink
    April 10, 2012

    I am really impressed with the fluidity of movement of Star Tracker HD on my iPad 2, but I had a few questions:

    1. Can I turn off the auto-zoom, and just choose a zoom level? When I hold still, it auto-zooms in so far that I can’t see the entire constellation.

    2. Can I zoom out farther? Some constellation are larger than the screen.

    3. Can I turn off the Milky Way visual?

    4. How do I de-select an item in the Search function? Once found, I no longer want the arrow pointing to it. (There is no “None of the above” option.)

    5.  Can I change the date WITHOUT changing the time (e.g. 10pm on sequential nights)?

    Many thanks for this great app. I will be recommending to my friends, for sure!

    Rick C.

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