Check out the various Ag PhD apps available for download on your platform. Versions for iPhone®, iPad® and iPod touch® devices can be downloaded from the Apple iTunes Store. Android apps can be downloaded from the Google Play Store.
Apple Devices – https://itunes.apple.com/us/artist/ag-phd/id520210329
Android Devices – https://play.google.com/store/apps/developer?id=Ag+PhD&hl=en
And get the best soil analysis available with the new Ag PhD Soil Test app!