Precision care forthe lawn you'vealways wanted.
Precise NPK math, live weather, GDD tracking, and AI photo diagnosis — all tuned to your climate, soil, and grass type. Everything a healthy lawn needs, in one app.
Private by design · Worldwide Unit System · You own your data "Period"
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Zero Ads — Period
Search once — live soil temperature and season GDD update together.
Search a location above to read live soil temperature and your pre-emergent window.
Search a location above to track heat accumulation, phase and pre-emergent timing.
Driven by real-time weather conditions and official label instructions
delivering precision with zero guesswork.
Every tool for a better lawn.
Everything you need to run your program — tap any tool to see it in action.
Home
Open the app to a live snapshot of your lawn — current air and soil temperature, humidity, and wind — with one-tap access to every tool in GrowCalc.
Weather
A 7-day forecast paired with live soil temperature, so you know exactly when conditions are right to feed, spray, or water.
Dashboard
A complete overview of what matters: your season, upcoming reminders, running totals, and more — all on a single screen.
Zones
Measure and save your lawn areas as zones, then track products and history for each one independently.
Calculator
Dial in granular and liquid rates from any product's N-P-K and your real square footage — exact pounds, ounces, and gallons.
Service
Track equipment, warranties, and service logs so your mower, sprayer, and tools are always season-ready.
Warranty
Store every receipt and warranty in one place — GrowCalc tracks expiry dates and counts down the months left, so you never miss a claim window on your mower, tools, or gear.
Photo Journal
Document your lawn over time with dated photos and see your progress unfold season by season.
AI Assistant
Chat for advice or snap a photo to identify pests, weeds, and disease — with treatment guidance grounded in your conditions.
Converter
Convert rates, areas, volumes, and more on the fly so label math never slows you down in the yard.
Products
Store your products and pull from a library of 120+ commonly used items, each with label rates ready to log in two taps.
Application Log
Track every product application and soil pH reading in one searchable history you can trust when something works — or doesn't.
Grass Calendars
Warm and cool-season grass calendars at your fingertips, so you always know what to do this month.
Renovation Planner
Planning a full reno, overseed, sod, or spot repair? Choose your target date and GrowCalc builds a step-by-step timeline backwards — so every prep, seed, and feed lands right on schedule.
Soil Test Analysis
Upload your soil test PDF, snap a photo, or type in the numbers — GrowCalc reads your lab report and turns it into a clear, tailored amendment plan for your grass.
Growing Degree Days
Real GDD data based on your location to time pre-emergents, treat common pests and fungus, and track your PGR applications.
Backup & Import
Back up your entire GrowCalc setup and import it to a new device in seconds — zones, products, logs, and history all move with you.
Archive & Start Fresh
Archive a finished season and start next year clean — then download CSV files of your logs to keep every season in one place and take your program to the next level.
Achievements
GrowCalc turns steady lawn care into a game — unlock milestones as you stick with it, from your first season to a full year, and watch your progress bars climb toward the next reward.
Every section, up close.
Home
Open the app to a live snapshot of your lawn — current air and soil temperature, humidity, and wind — with one-tap access to every tool in GrowCalc.
Weather
A 7-day forecast paired with live soil temperature, so you know exactly when conditions are right to feed, spray, or water.
Dashboard
A complete overview of what matters: your season, upcoming reminders, running totals, and more — all on a single screen.
Zones
Measure and save your lawn areas as zones, then track products and history for each one independently.
Calculator
Dial in granular and liquid rates from any product's N-P-K and your real square footage — exact pounds, ounces, and gallons.
Service
Track equipment, warranties, and service logs so your mower, sprayer, and tools are always season-ready.
Warranty
Store every receipt and warranty in one place — GrowCalc tracks expiry dates and counts down the months left, so you never miss a claim window on your mower, tools, or gear.
Photo Journal
Document your lawn over time with dated photos and see your progress unfold season by season.
AI Assistant
Chat for advice or snap a photo to identify pests, weeds, and disease — with treatment guidance grounded in your conditions.
Converter
Convert rates, areas, volumes, and more on the fly so label math never slows you down in the yard.
Products
Store your products and pull from a library of 120+ commonly used items, each with label rates ready to log in two taps.
Application Log
Track every product application and soil pH reading in one searchable history you can trust when something works — or doesn't.
Grass Calendars
Warm and cool-season grass calendars at your fingertips, so you always know what to do this month.
Renovation Planner
Planning a full reno, overseed, sod, or spot repair? Choose your target date and GrowCalc builds a step-by-step timeline backwards — so every prep, seed, and feed lands right on schedule.
Soil Test Analysis
Upload your soil test PDF, snap a photo, or type in the numbers — GrowCalc reads your lab report and turns it into a clear, tailored amendment plan for your grass.
Growing Degree Days
Real GDD data based on your location to time pre-emergents, treat common pests and fungus, and track your PGR applications.
Backup & Import
Back up your entire GrowCalc setup and import it to a new device in seconds — zones, products, logs, and history all move with you.
Archive & Start Fresh
Archive a finished season and start next year clean — then download CSV files of your logs to keep every season in one place and take your program to the next level.
Achievements
GrowCalc turns steady lawn care into a game — unlock milestones as you stick with it, from your first season to a full year, and watch your progress bars climb toward the next reward.
Common questions
Yes. A free GrowCalc account is required to access the app and its features. This lets us securely encrypt and back up your lawn history, product library, photos, warranty records, and reminders — so your data stays private, syncs across devices, and is never lost when you switch phones. We never sell your data, never share it with advertisers, and give you full export and one-tap account deletion at any time.