Instagram and related apps on android OS

play.google.com/ instagram.android 
androinica.com/2010/12/instagram-heading-to-android
androinica.com/2012/04/instagram-android-app
androidapps.com/ instaframe-for-instagram
Save photos to SD card (without posting them)
One of the main missing features that many bloggers have pointed out is the lack of ability to save a photo to your SD card after applying a filter. But, I'm here to tell you how to do that.

Step 1) Open Instagram and take (or import) a photo.
Let's use a typical hipster subject: Converse All-Stars.

Step 2) Apply whichever filter and/or effects you like.

Step 3) Click the "next symbol" and a "Processing..." dialog will show up.

Step 4) The photo is now saved to your SD card.

You can back out of the app (press back several times or press home) and go to your gallery.
There you can find a folder titled "Instagram" that has your photo.

Voila! It's there for you to do whatever you want with it, without having to post it to Instagram.