Tired of counting rows? Need to track your position in the field while spraying? Farm Sprayer GPS is a simple tool that allows you to set the width of your implement and see where you have sprayed or spread fertilizer using the the GPS built into your phone or tablet or with an external GPS antenna. Use it for tillage, spraying, planting, or anything else. Farm Sprayer GPS highlights the ground you have covered and shows overlap. The maps can be saved to the device so that you do not need data in the field. !!Use with caution!! Phone and Tablet GPS providers can be off by meters. Not all devices have GPS antennas built in. Please visit our website for help finding an appropriate external antenna to get the most out of the app. Continued use of GPS running in the background can dramatically decrease battery life. Optional GPS Log Subscription Information: The logging functionality of the app can be subscribed to on a auto renewal monthly basis. • Within the app this subscription is titled "GPS Logs (1 Month)" • The subscription lasts a month and is renewed automatically each month. • Payment will be charged to iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period. The price is 9.99 USD. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the users Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. The terms of use and privacy policy can be found here: http://plantermonitor.com/terms/