A new app allows people to report crimes anonymously to the Fairfax County police via a smartphone.

Fairfax Crime Solvers announced Tuesday they were joining a number of local departments using Tip Submit. The mobile app is available for the iPhone and phones with the Android operating system.

Users select the local crime solvers program to which they want to submit a tip. They then fill out a tip form, which allows users to select the type of crime, attach a photo and even geolocate the crime using the phone’s GPS feature.

The tip is assigned a code and users can track correspondence about the issue with the local police department. Tip Submit is also used by other local police departments, including Montgomery County, Charles County, Manassas and Stafford County among other places.

Tip Submit guarantees its app is secure and the tips will remain anonymous.

The app is part of a continuing effort to provide new ways for the Fairfax police to connect with the public. The department launched a Twitter account in March and also has a Facebook page.

In 2008, the department introduced the capability to text and e-mail crime tips. Crime tips can also be submitted via the department’s web site.

Fairfax County launched its anonymous tip line in 1979.