The Gravitational Lens Simulator for the iPhone

Welcome to the GravLens web page!  GravLens is currently under review in the iPhone App Store.

Gravitational lensing is a remarkable astrophysical phenomenon, where the light
of a distant galaxy is bent by a massive foreground galaxy.

Now you can simulate the effect of a gravitational lens on your iPhone or iPod Touch!

With GravLens, a remarkable and educational tool you can:

* Simulate Hubble Space Telescope images of strong gravitional lenses
* Adjust the size and ellipticity of the lens model
* See the distortion on a picture from your photo library or camera
* Save the image to your photo library 

If you have any questions,  problems, or bugs, send them to