WEST LAFAYETTE, Ind. — The Purdue “Tree Doctor” app, Purdue Extension’s most popular app, now is available in an Android version for mobile devices.

Previously available only for the iPhone, the app helps users identify more than 175 tree problems on more than 60 types of trees common to the Midwest and Northeast and find recommendations to manage them properly.

The app is helpful to homeowners, landscape professionals, arborists and garden center personnel.

“It will be like having our entire library of photos and recommendations in your pocket when trying to make a diagnosis,” said Janna Beckerman, a Purdue University associate professor of botany and plant pathology who developed the app with Purdue entomologist Cliff Sadof.

“Once you have a tentative diagnosis, you can double-check it by following links on each photo to detailed descriptions of damage and stages of problem development,” Beckerman said. “From there, you can get advice to take care of the problems.”

Information provided in the app was reviewed by peers to ensure it is accurate, and it does not recommend name-brand chemicals or products to treat tree problems.

The app costs $1.99 and is available at Google Play. It also is available through Purdue Extension’s The Education Store at mdc.itap.purdue.edu/item.asp?Item_NumberID-452-APP-A.