I've used an app called 'D-Link Cams' by EyeSpyFX for probably 2 years on the iPhone and it
works with most D-Link cameras.. personally used it with the following-
DCS-7110, DCS-6610, DCS-5610, DCS-3110, DCS-3410, DCS-2230, DCS-2210, DCS-920
and DCS-3430.. I'm sure they support the rest of them..
Platforms - iOS, Android, Windows Phone, and Blackberry.
Cost I think is $4.99
Their website - http://www.eyespyfx.com/mywebcam.php
It's a basic app but not bad.. you can control a PTZ with it as well.