$3.99

About

  • Released
  • Updated
  • Data updated
  • Compatibility
  • Age Rating
  • Size
  • Devices
  • Languages
  • October 14, 2008
  • 2.9.6 – September 5, 2023
  • 14 hours ago
  • iOS 12.4+
  • 4+
  • 36.72MB
  • iPhone, iPod
  • 2
iStellar screenshot #1 for iPhone
iStellar screenshot #2 for iPhone
iStellar screenshot #3 for iPhone
iStellar screenshot #4 for iPhone
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What's New in iStellar

2.9.6

September 5, 2023

Fixed an issue where data was not reflected immediately after comet orbital element data was downloaded. Fixed UI issue with iOS 15.

User reviews

Impressive Upgrade

Astro Arts has done the right thing in correcting the upgrade path of iStellar. My iStellar 1 upgraded to iStellar 2 as promised. This is an impressive upgrade. I'll need to learn its many new features before writing a full review. Buy this app to support these devs as they perfect a truly original and comprehensive star chart. Descriptive content is still minimal, but the chart is becoming awesome and there are great efforts at an interface allowing detailed control of all elements.

It's a bit buggy in this release, but nothing serious. Stars may stop twinkling, and the buttons controling the grids don't always work.

Prior Reviews:

Version 1.2.2 fixes the problem of crashing upon launch.

Other tweeks needed:
• Awkward to have to push a start button to get the clock to advance in real time. Clock should run automatically by default.
• Light pollution mode needs to be more gradual. Turning it on wipes out too many stars even at the lowest setting.
• Darkness is not calculated properly. Sky is shown as too light to see stars even when it is actually completely dark outside.

Original review:

(Other apps have since caught up in teaching the constellations.)

Best App for Learning Constellations

The high price hurts sales, but this is actually the best app in the store for learning the constellations. It's not perfect, but feels like a work in progress written by people with significant expertise in astronomy, programming, and user interface design. I predict they will fix the flaws and would like to see the app receive more support from star gazers.

Not all other astronomy apps show cartoons for the constellations, and many that do include only an incomplete set. In nearly every case in other apps, the constellation lines are arbitrary rather than clear (why draw Geminii as a box with a line off it when it can appear as stick-figure twins?), and the cartoon is an arbitrary superimposition of a character that does not fit on top of its stars (why show the Serpent Bearer's serpent not following its line of stars?).

This is the only app showing carefully conceived, beautifully drawn lines and cartoons for every constellation. I have wondered since childhood how the ancients saw pictures in the night sky. This app shows me how.

Improvements needed: Night vision mode, especially in menus; foreground added to landscape shown at horizon; option to see below the horizon to see the gorgeous cartoons in the opposite hemisphere; short histories of the constellations.
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Developer apps

FAQ

Is there an iPad version available for iStellar?

No, the iStellar app is not compatible with iPads.

Who built the iStellar app?

iStellar was released by AstroArts Inc..

What is the minimum iOS version supported by iStellar?

The iStellar app currently supports iOS 12.4 or later.

What user rating does the iStellar app have?

Users have given iStellar a middling rating of 4 out of 5.

What is the main genre of the iStellar app?

Navigation Is The Primary Genre Of The Istellar App.

What iStellar application version is the latest one?

2.9.6 is the most recent version of iStellar.

When did the new iStellar update happen?

iStellar’s most recent update was on July 15, 2025.

When did iStellar first launch?

The app first launched on March 4, 2023.

What age rating is assigned to iStellar?

Safe for children to use, no mature themes or inappropriate content.

Which languages does iStellar support?

iStellar currently features the following languages: English, Japanese.

Is iStellar part of the Apple Arcade gaming experience?

No, iStellar is not on Apple Arcade.

Is iStellar integrated with in-app purchases?

No, iStellar does not integrate in-app purchases for users.

Is iStellar tailored for Apple Vision Pro compatibility?

Unfortunately, iStellar is not tailored for compatibility with Apple Vision Pro.

Does iStellar include ads as part of its experience?

No, iStellar does not include ads as part of its experience.