New York, Jan 20 (IANS): Unhappy about a co-worker's attitude and want to blurt it out once and for all? Here comes an app that provides you an outlet to rant about your feelings without identifying you to him or her.

Named "Memo", the messaging app has been developed by Ryan Janssen from a company called Collectively, for working professionals, Quartz reported.

Here, users have to verify their affiliation with a company first either via LinkedIn or a company e-mail.

Companies are then assigned "memo boards" on the app.

Users can post anonymously to their company group.

Posts can also be shared publicly but they are only identified by the company the users are working for.

According to Janssen, the app has seen some push backs from the companies but the overall response is good.

The app's privacy policy says there is nothing it can do if a person is identified, but tells users: "don't be mean."

"Memo" is available on the Apple App Store.