Astronomy Planner for iOS

Observer Pro 1.2 is now available

Observer Pro 1.2 is now available on the app store! This update brings the following improvements:

  • The Featured list is now much more useful: your location, local horizon, and the current lunar phase are now used to provide a list of objects that are prime for observing.
  • Added option to show an object's catalog name rather than common name when browsing lists.
  • Correct moon image orientation for Southern Hemisphere sites.
  • Fixed bug that made it impossible to leave the Observing List screen after rearranging items.
  • Other bug fixes and other improvements.

As always, App Store reviews are very helpful. If you experience any problems with the app though, feel free to contact me directly at

Observer Pro 1.1.1 submitted

Observer Pro 1.1.1, with fixes for devices running iOS 8, has been submitted to Apple for review. This update will fix two problems that were discovered and reported by users running iOS 8:

  • Swiping rows in object list screens was not displaying the action buttons
  • Tapping on the object image to go to the sky view screen would cause the app to crash

The update should be available later this week. These bugs only affected devices running iOS 8. 

Thank you to the users who contacted me about these issues!

Observer Pro 1.1 is now available

After an embarrassingly long absence, Observer Pro is finally back on the App Store!

In addition to compatibility with iOS 8 and 9, Observer Pro 1.1 includes the following:

  • Improved night mode
  • Altitude angle display in object Sky View
  • Swipe to edit objects in the list views (add to favorites, etc.)
  • User interface refresh
  • Bug fixes

As always, if you have any feedback or questions, please feel free to email me at If you like Observer Pro, please tell your friends and leave a rating on the App Store.

Making Progress

Hello patient astronomers,

Before I get into a development update, I want to apologize. As you know, I still haven't shipped an iOS 8 compatible version of Observer Pro. I also haven't kept you informed of progress that has (or has not) been made. I know many of you are holding off updating your devices to iOS 8 because you want to continue using Observer Pro. This is a terrible thing to do to loyal customers. I'm sorry.

Your emails and comments on this blog have been amazing and extremely encouraging, and are much appreciated even if I haven't responded to them all. 

I have recently dedicated some time to pick Observer Pro up off the floor and get development going again. I took a short vacation from my day job to tackle the biggest barriers I was facing. It's now in a place where I can better utilize small time slots on nights and weekends to keep making progress.

Going forward, I plan on doing a better job of communicating progress so that you can have a better feel for when you'll finally get your hands on the next version of Observer Pro. Thank you so much for not giving up on me!

Clear skies,

Return from the Dead

Observer Pro 1.0 shipped on September 15th, 2011. After a minor bug fix update, Observer Pro has continued to work through several major updates to iOS. Despite my intention of continuously improving Observer Pro through feature updates, I found it difficult to make the time to do the work. The pressure has been building over the years as I, and other Observer Pro users, have wanted more from the app.

On top of that, when iOS 7 shipped, Observer Pro instantly looked dated and parts of the app started exhibiting incorrect behavior. I knew it was time to get to work in whatever way was possible. So, I fired up Xcode and opened up the Observer Pro source code and compiled it for iOS 7 just to see how things went, to see how much work I had ahead of me to at least ship a compatibility update. Well, things had changed so much in the world of iOS development that there was a significant amount of work to be done just to get it to run correctly when built using the iOS 7 SDK.

This effort was further motivated after installing the iOS 8 beta on one of my older devices to see how the App Store version of Observer Pro would run. Turns out, it doesn't run at all under iOS 8. This is a big problem! I love using the latest and greatest software, but if I upgrade to iOS 8 then I'll lose Observer Pro. Of course, this would also be the case for the thousands of users who have come to rely on Observer Pro for their astronomy planning.

With the prospect of so much work just to ship a compatibility update, I began thinking maybe this was a good time to reimagine Observer Pro for today's world. To create the version of Observer Pro that I would want now that I've had years of using Observer Pro 1.0 and feedback from other users. Making time in the evenings and weekends, that's what I am currently doing.

I know this is really a long time coming. Thank you for your patience.

© Joshua Bury, 2011-2014. All rights reserved.