ColDonAgro is a tractor GPS guidance app for parallel driving in the field. A free farm navigation lightbar with GPS/GNSS, RTK support, sprayer section control, yield mapping and autosteer.

ACCURACY
The app shows your position from the receiver it is connected to. The phone's built-in GPS gives 2–5 m accuracy — enough to try the app and measure a field. For real field work connect an external Bluetooth or UDP receiver: accuracy from 0.5 m down to 1 cm with RTK, update rate up to 10 Hz. ColDonAgro works with any external GPS antenna, including third-party ones.

FREE AND PAID
Basic guidance features are free with any antenna. With Novator, Novator Sensor and Novator Pro RTK antennas the license key is built into the antenna firmware and unlocks all advanced features with no subscription.

GUIDANCE
• Parallel driving on straight AB lines and AB curves
• Lightbar: cross-track error and steering hint
• 3D mode without maps and satellite map mode
• Night mode for working after dark
• Mark obstacles in the field

FIELDS AND DATA
• Measure field area and perimeter with GPS
• Field database: boundaries and guidance lines are saved and reused in every operation
• Farming activities log
• Import rate maps as SHP
• Export fields as KML, export yield data as SHP
• Share field data

SPRAYER
• Sprayer section control
• Applied volume monitoring

PRECISION FARMING
• Yield monitoring and yield maps
• Variable rate application
• Autosteer

WHO IT IS FOR
Small and large farms alike: tractor guidance cuts overlaps and skips while spraying, fertilizing, seeding and tilling — saving chemicals, fuel and time.

SUPPORT
Developed by the team behind the KolDon YouTube channel. Video tutorials on the channel, developer support at konnik800@gmail.com.