Download this app if: you need an aggregator that collects many daily deals.
Daily deals (Or Flash sells, deal of the day) are local deals that usually sell for days if not hours. They offer large discount, often times half price.
DealLeak collects great daily deals into one site from Groupon, Living Social, Plum District, kgb Deals, EverSave, Tippr, HomeRun, BuyWithMe,...
daily deal source — This is a portal to deals that are cut way cheap until they sell, so it's constantly refreshing and has some really cheap stuff!