Venmo

Gracefully splitting the difference between Facebook and PayPal, Venmo lets you transfer money among friends—especially within your social media circle—in four clicks. Emojicons included!

Check

Check does things other personal finance apps do—it monitors account levels, tracks bills, and factors them into grouped budgets—but goes one step further, allowing you to actually pay bills directly from your phone.

Spendee

With a friendly interface, Spendee is a simple alternative to Mint.com, grouping expenses into broad categorical buckets for an easy overview of spending. 

Expensify

Goodbye, receipt-stuffed wallet! Expensify captures what you spend on the job with photo logs of receipts, imported credit card data, and mileage and time trackers.

Bloomberg

One for the addicts: Bloomberg delivers breaking finance and business news along with market data from around the globe, with tools for tracking your portfolio.