About RainRule

Most irrigation decisions are still made by feel: the neighbor started watering, the soil looks dry, it's been a week. RainRule replaces that guesswork with the FAO-56 standard, the same water-balance method agricultural institutions use, running continuously against live weather data for your exact coordinates.

For every field you add, RainRule tracks the root-zone water deficit day by day, credits rainfall, projects the next seven days of crop demand, and tells you when to irrigate and exactly how much to apply for your soil, crop, and irrigation system. A morning email digest puts the numbers in your inbox before you're in the truck.

No hardware to install, no sensors to calibrate, no API keys. Just your field's location and about two minutes of setup.