The 21 best free apps for your iPhone (AAPL)

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There are more than a million iPhone apps out there, and that means it can be hard to sort through all the noise and find the ones truly worth using.

But we can tell you this: most of the best apps are completely free.

Whether you just bought a new iPhone or you're simply looking for something new, here are some of the best free apps you should download today. 

Operator is your own virtual assistant.

Virtual assistants are going to be big in 2016, and Operator has been one of the most talked about. Launching from Uber co-founder Garret Camp's Expa incubator, the assistant acts as your "operator" to help you book flights, send flowers, or pick out Christmas presents. It has growing competition from Facebook M, but it opened to the public in November, beating M, which is still in limited testing.

Hinge helps you meet your friends' friends.

Like Tinder, Hinge matches users with nearby singles, but Hinge takes the matching process one step further by only searching for people with whom the user has at least one Facebook friend in common. It eliminates the randomness that makes some of Tinder's potential users skeptical.

Paribus gets you money back from stores.

Paribus takes advantage of the fact that many of stores vow to refund customers the difference if their competitors offer the same product for cheaper or if they introduce their own additional discount not long after the initial purchase. Every time a receipt hits their inbox, Paribus scrapes the product information and will spend several weeks poking around for potential discounts. If it finds one, the shopper will get a refund.