Amazing
This app is a great demonstrator for gravitational lensing
Needs an update for ios 11
This is a fantastic app when it works - but it doesn't save your edits reliably. It keeps saving the unedited source.
update:
11/18: iOS 12.1 on a new iPhone X - still isn't working properly. It allows you to manipulate the image to your heart's content, but will not save anything but the source image. Very disappointing. Used to be a great app.
update:
11/18: iOS 12.1 on a new iPhone X - still isn't working properly. It allows you to manipulate the image to your heart's content, but will not save anything but the source image. Very disappointing. Used to be a great app.
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Excellent app
Does exactly what it says. Yes, it is somewhat like some Photoshop effects, but this is real physics. And cool physics at that!
Nice
& intuitive
Great app
Well done! Easy to use, instructive, and fun.
