Even though Apple has improved the camera of iPad by a huge extent, it still has a lot of camera noise. However if you are Mac user, you can install Macphun Noiseless that offers one click solution for removing the noise from iPad camera images easily.
The Macphun Noiseless retails for 18 dollars and is much simpler to use compared to expensive apps like Photoshop that has a massive learning curve. Macphun Noiseless has smart noise detection algorithm that allows non-techy users to easily remove noise.
There are not a lot of settings to mess with which is a good thing. Its special algorithm analyses each pixel and chooses the best present to remove noise.