SmartPhone Coupon Apps

If you are an iPhone or smartphone user, there are many coupon apps that are quite convenient especially when you are on-the-go!
A few that I think are worth checking out:

• Coupons.com App** 
• A Full Cup App** (click on forum<then grocery store<then military commissary to view the forum)
• We Use Coupons App** (click on deal locator<then grocery stores<then commissary to view the forum)
• Grocery iQ App (scan barcodes, make a grocery list, find coupons + more)
• Groupon App (features 50-90% off deals for things to do, eat, see, and buy in your town)
• Cellfire App (hopefully once the Commissary starts implementing their own 'store card', we can use this app to download coupons to it!)
• RedLaser App (scans product barcodes so you can compare product prices!)
• Track My Coupons App (I've heard this is a good one-but haven't tried it yet)

**=My favorites!

What Coupon/Savings Apps have you used on your smartphone? Which ones are YOUR favorites? 

=)