GrowCalc

GrowCalc is the complete toolkit for lawn enthusiasts and turf pros who want a greener, healthier lawn without the guesswork. Calculate precise nutrient rates, track every application, and time your treatments perfectly with live weather and growing-degree-day data. PRECISION NPK CALCULATOR Enter any product and lawn size to get exact N-P-K rates per 1,000 sq ft. Supports granular and ready-to-spray (RTS) liquid products, with accurate density and coverage math so your numbers always add up. SMART APPLICATION LOG Record every fertilizer, herbicide, fungicide, and PGR application. See your season's total nutrients at a glance and never double-apply or miss a window again. LIVE WEATHER & SOIL DATA Get local conditions, forecasts, and soil insights based on your location — so you know exactly when it's safe to spray, mow, or feed. GDD & GROWTH TRACKING Track Growing Degree Days to project regrowth and perfectly time Plant Growth Regulator (PGR) and fungicide reapplications. Get reminders before your next treatment is due. SEASONAL AGRONOMIC CALENDARS Follow tailored month-by-month task schedules for both warm-season and cool-season grasses — fertilizing, aeration, dethatching, pre-emergent timing, and more. PRODUCT INVENTORY & DASHBOARD Save your go-to products and view a season-at-a-glance dashboard of nutrients applied across every zone. GO PRO Unlock advanced tools including full GDD projections, multi-zone tracking, season archives, and more with GrowCalc Pro. Whether you're chasing a stripe-worthy backyard or managing multiple properties, GrowCalc puts professional-grade turf science in your pocket. Download GrowCalc and grow smarter today. GrowCalc Privacy Policy: https://growcalcs.com/privacy Apple's Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/