The top 3 non-merchant shopping apps for June 2012 are: RedLaser, Out of Milk Shopping List, and SavingStar Grocery eCoupons.

Nielsen, a company that provides clients the most complete understanding of what consumers watch and buy, has just released "Top 10 Shopping Apps for June 2012 (Smartphones, U.S.)" Among the top 10 shopping apps, 7 apps are either merchant-specific, marketplace, or group buying apps like Group and LivingSocial. What's interesting to know is the 4 apps that have nothing to do with any specific online store or marketplace. These are the 4 most popular needs met by smartphone apps that helps online consumers the most in June 2012:

Some of you may be familiar with Bing rewards. According to Bing.com:

Use Bing. Get Rewarded. Join Bing Rewards to start earning credits toward free rewards.

Once you sign on Windows Live account, you're entitled to earn 1 credit per 2 Bing searches up to 15 credits per day. Once you accumulate 525 credits, you'll be able to redeem a $5 Amazon gift card. Put the earned credits into perspective, if you're the type of person who performs a lot of searches on Bing.com every day, and you like to use Bing anyway, you'll probably earn one $5 Amazon card every couple months.

Similarly, the I Need a Bargain Rewards that we quietly launched this week rewards your visits to INeedaBargain.com. Every day you visit our site, you'll instantly be rewarded with 100 pts. Your rewarding balance is always shown at the bottom of the page on INeedaBargain.com.

As I write this, we had just released our API for software developers as seen on ProgrammableWeb, and one developer had signed up for an API key. 

Whether you call it a Coupon API, Bargain API, Discount API, or Sale API, our API covers them all. The API is best suited for integrating something you see on INeedABargain.com (INAB) into your website or mobile app.

To tap into shopping deals mentioned by numerous bargain sources, our REST API lets you interact with INAB bargain database by sending our server HTTP requests, allowing your customers to access discount shopping and coupon information from within your app. The end result is that shoppers get to see deals, bargain sources get more visitors, and merchants get to ring up potential sales. All parties benefit, free of charge.