Precision Laboratories of Waukegan, Ill., has updated its tankmix app for iPhones to include a new home screen for easier access to the main functions.

The update was based on user feedback, according to a news release.

The free app, originally released in March, shows users the proper mixing sequences for pesticides, adjuvants and foliar nutrition products.

Since its release, more than 150 crop protection products have been added to the database, bringing the total to more than 900.

The update, known as Version 1.1, allows users to more easily share the app with others and includes an optional e-mail sign-up to receive updates.

Version 1.1 can be downloaded free from the Apple Store.