Evapotrack is a plant watering tracker for iPhone and iPad built for drain-to-waste growers — coco, soil, or any medium where measuring runoff matters. Log water added and runoff collected for each watering. Retention and runoff % are calculated automatically. Over time, the app charts your retained water and gives data-driven recommendations for your next watering. No accounts. No cloud. No ads. All data stays on your device. Free on the App Store for a limited time.