But it's getting easier to spot and eliminate unwanted charges faster. Start-up subscription management services including Truebill and Trim offer free reviews of consumers' bank statements, specifically to flag recurring charges. Recently rebranded money management app Prosper Daily (formerly BillGuard) alerts users of its free service to potential problems, including gray charges, as they appear. (For all three, users must link those credit and bank accounts they want monitored.)
At Truebill, the typical user has 11 recurring charges — mostly services users know about and want, said Truebill founder and chief executive Yahya Mokhtarzada. Netflix is the most commonly found charge, per site data, with Spotify, Amazon Prime, AT&T and GoDaddy domain name hosting rounding out the top five.
Among the 17 percent of site users who cancel a membership, however, the average annual savings is $512. (See chart below for some of the most-canceled charges.)
"As consumers keep racking up more and more subscriptions, it becomes impossible to stay on top of them," Mokhtarzada said.