
About
This app is a comprehensive lawn care toolkit that uses precision math and live climate data to help users grow healthier lawns. It offers tools for calculating fertilizer rates, logging applications, diagnosing issues with AI, and tracking weather patterns. Manage multiple lawn zones and access global pest pressure data.
What's New in GrowCalc
2.2.1
August 29, 2026
- Ready-to-Spray products now show the nutrients and micronutrients they deliver per 1,000 sq ft (100 m²), exactly like granular and liquid products. - Bottle size now lives inside the Ready-to-Spray section next to coverage, so the auto application rate and delivered nutrients always have what they need — and the card tells you if either one is missing. - Fixed a blank Bag size / Bottle size panel that could appear on product cards on Android. - Fixed duplicate push notifications — when several accounts share one phone, only the account you are signed into now sends your daily digest. - Fixed digests arriving in the middle of the night — your local timezone is now always used, so the 7 AM digest really is 7 AM. - Fixed notification titles showing stray characters instead of an apostrophe. - Notifications now speak your units — metric users get °C, km/h and mm instead of °F, mph and inches.
MoreSubscription plans
GrowCalc Pro
Professional NPK Calculator
User reviews
Developer apps
FAQ
What is GrowCalc?
GrowCalc is a comprehensive agronomic toolkit designed to assist with all aspects of lawn care. It provides precision calculations, AI-powered diagnostics, and real-time environmental data to help users maintain healthier lawns.
Does GrowCalc have ads?
No, GrowCalc does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted user experience.
What are the subscription options for GrowCalc?
GrowCalc offers a Pro subscription with two plans: a monthly option for $4.99 and an annual option for $49.99. Both plans include a 7-day free trial.
How does GrowCalc's AI Photo Diagnosis work?
You can take a photo of any weed, disease, insect damage, or nutrient deficiency on your lawn. The app's advanced AI, trained on turf science, will instantly identify the issue and provide a step-by-step treatment plan.
Can GrowCalc help me track my lawn's nutrient levels?
Yes, GrowCalc features a Precision NPK Calculator that allows you to determine exact N-P-K rates for any product. It also tracks season totals per zone and cumulative NPK when you log your applications.
What kind of weather information does GrowCalc provide?
GrowCalc offers hyperlocal forecasts, hourly conditions, and soil data based on your GPS location. It also provides color-coded Spray Windows indicating the best times for application based on wind, rain, and temperature.
Is GrowCalc suitable for managing multiple lawn areas?
Absolutely. GrowCalc supports multi-zone property management, allowing you to track front, back, side, and specialty areas independently. This is ideal for managing multiple lawns or different sections of a large property.
How often is GrowCalc updated?
The latest version of GrowCalc is 2.0.0, which was last updated on August 5, 2026. Updates typically include new features, bug fixes, and performance improvements.







