Astrophysics I

This app is fantastic, maybe one of the best I own. I am a grad student in aerospace engineering and it has a lot of information for quick reminders and/or learning new stuff. The usefulness as a quick reference aside the animations and examples are fabulous. I would only suggest going though and finding the language errors. No glaring errors just a few terms that haven't gotten an alternate English term. Otherwise the amount of work put into this is exceedingly evident and I must give credit where credit is due. I own several of this developers apps and all are great. Keep it up and I look forward to more.

This app is absolutely amazing! I use it often and I'm in love with the detail put into it. Amazing job!

This app is a useful compendium on orbital mechanics & solar system data. Residual French & typos & syntax need to be cleaned up in the English version. Many of the animations are unique and very useful; some are not or do not operate smoothly (Solar System esp.). They would be especially useful for class use if VGA output were enabled in the app for iPad1. I look forward to the next version, and Parts 2 & 3.

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I am a science student at university, and I bought the set of these astrophysics apps and they do not work. I paid nearly 10 dollars for the both of them, and I can't do anything. I don't have a lot of money and I got this in return. The apps crash like crazy, particularly astrophysics II. I've never written a bad review in my life, until now. I'd love a refund for a complete waste of my money.

This app is ok but its focus on mathematics and physics lacks greatly and is basically an overview of and the history of astronomy, not astrophysics