Comparison

GrassMaster vs Lawn Command

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GrassMaster

This app provides expert lawn care guidance, including fertilization, watering, and disease treatment. It features calculators for sod and mulch estimates, and offers detailed schedules for various grass types.

Highlights
  • Professional lawn maintenance methods
  • Sod and mulching material calculators
  • Weed and disease identification with reference images
  • Fertilizing schedules for common grass types
  • Exportable fertilization schedules for calendars
  • Covers 8 common turf grass types
Features
Read full description

GrassMaster contains proven maintenance methods used by the Pros to have your lawn looking beautiful! New version has a Sod Estimate Calculator and a Mulching Materials Estimate Calculator. Need to sod or mulch an area of your landscape? GrassMaster now makes it super-easy to estimate the materials and cost for sod or mulch! How and when to fertilize, water, treat weeds and common lawn diseases. GrassMaster includes reference images so you can quickly identify a particular disease so you know exactly what herbicides to buy. No more guess-work! The turf grass specifications in GrassMaster are not only our years of experience, but also right in line with turf maintenance practices recommended by Extension Offices and Universities all across the U.S. as well as many Landscaping Professionals. GrassMaster also includes an easy to follow Fertilizing Schedule for each Lawn type (listed below). The Schedule file can be Emailed right from this App and then imported into your favorite Calendar application (iCal, Outlook, etc.). If you're syncing your Calendar to iTunes, you can have the Schedule imported into your iPhone Calendar App. GrassMaster covers the most common Lawn/Turf grasses, including: Bahiagrass Bermuda Grass Bluegrass Centipede Grass Fescue Grass Ryegrass St. Augustine Grass Zoysia Grass We hope you enjoy using GrassMaster! For full details and more screenshots, questions or comments, please visit our Support site at: grassmaster.i2dllc.com

About

Lawn Command

This app provides personalized lawn care tasks based on real-time weather and soil conditions, not generic schedules. It uses AI for turf diagnostics, identifying issues and recommending treatments. Features include watering intelligence and a digital shed for product tracking.

Highlights
  • Personalized daily lawn tasks
  • AI turf diagnostics (weeds, disease, pests)
  • Watering intelligence with precipitation tracking
  • Digital shed for product inventory
  • Multi-zone mapping
  • Growth Degree Day (GDD) tracking
Read full description

Your lawn doesn't follow a calendar. It follows the weather. Lawn Command delivers daily, personalized lawn care tasks based on your actual conditions — not a generic schedule. Soil temperature, rainfall, growth potential, and 30+ data points drive every recommendation, tuned to your grass type and your local micro-climate. WHAT MAKES IT DIFFERENT Most lawn apps give you a static calendar. Lawn Command recalculates every day based on real conditions — soil temp, rainfall, humidity, dewpoint, wind, and GDD accumulation. → When Growth Potential drops, your mowing interval extends automatically → When disease risk spikes, you'll get an alert before it's too late LAWN CONDITIONS DASHBOARD See your lawn's vital signs at a glance. The Conditions Grid shows Growth Mode, Water Balance, Disease Pressure, and Soil Temperature — updated daily with your local micro-climate data. HOME SCREEN WIDGET The same vital signs from the Conditions Grid — Growth Mode, Disease Pressure, Soil Temperature, and Water Balance — available as a home screen widget. Check your lawn's status without opening the app. GROWTH OUTLOOK Tap the weather card to see a 3-day forecast tuned for your lawn. Each day pairs weather conditions with Growth Potential so you can plan around what your grass is actually doing. SPRAY WINDOW FINDER Timing makes or breaks a spray. Lawn Command reads the forecast and gives you a live verdict — Good now, Wait, or Hold off — weighing wind, rain, and temperature so applications land when conditions are right, not lost to wind or washed away by rain. SMART COACHING NOTIFICATIONS Lawn Command doesn't wait for you to open the app. Get proactive alerts for season transitions, water deficits, growth surges, and ideal mowing windows — all timed to your local conditions. AI TURF DIAGNOSTICS Snap a photo of a problem area. The AI identifies weeds, disease, and pests — then recommends treatment with specific products and application rates. DAILY TASK ENGINE 30+ triggers generate personalized task cards every day: • Pre-emergent timing based on soil temperature • Fertilizer rates and product recommendations • Mowing height & interval adjustments • Watering reminders with precipitation tracking • Disease risk alerts with treatment plans RACHIO SMART CONTROLLER INTEGRATION (Pro) Connect your Rachio controller and every watering run flows into Lawn Command the moment your sprinklers shut off — zones, runtime, and inches applied. No manual logging: your water balance reflects exactly what your lawn received. WATERING INTELLIGENCE Log irrigation, track precipitation, and see a rolling 7-day water balance chart. Know exactly when your lawn needs water and how much. REPEAT APPLICATION Tap "Repeat" on any past treatment to pre-fill a new log instantly — same product, rate, method, and zones. Perfect for weekly spoon-feeding and recurring treatments. SEASON TRACKER Applied PGR or a wetting agent? The Season Tracker monitors each treatment's lifecycle using Growing Degree Days — a live progress bar, estimated reapply date, and escalating alerts as the product wears off. Never miss a reapplication window. DIGITAL SHED (Pro) Track your products — quantity remaining, expiration dates, application rates. Inventory updates automatically when you log treatments. INSIGHTS & ANALYTICS (Pro) Interactive charts for Growth Potential, GDD, soil temp, rainfall, dewpoint, and more. See trends over time and track your lawn's progress. MULTI-ZONE MAPPING (Pro) Draw up to 16 zones on satellite imagery. Each zone tracks its own grass type, shade level, and drainage conditions. SUPPORTED GRASS TYPES Bermuda · Zoysia · Fescue · Kentucky Bluegrass · St. Augustine · Centipede · Perennial Ryegrass · Bahia · Buffalo · and more. Free to use, plus a 7-day Pro trial. No credit card needed. See why your lawn deserves more than just a calendar. Terms of Use (EULA): https://lawncommand.app/terms Privacy Policy: https://lawncommand.app/privacy

Screenshots

GrassMaster4 screens
Lawn Command4 screens

Verdict

The call

The clearest difference is review sentiment: Lawn Command at 100% against GrassMaster's 33%. Lawn Command also leads on price (Free vs $2.99) and update cadence (weekly vs every 7 months). GrassMaster's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.1). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Lawn Command is free to download; GrassMaster costs $2.99 up front. Lawn Command sells 2 in-app purchases, starting at $4.99 per month. GrassMaster asks for nothing beyond the download.

UpkeepUpdate frequency

GrassMaster ships an update every 7 months, Lawn Command weekly. The most recent releases landed on September 17, 2026 and September 1, 2026 respectively.

Scorecard6 real differences · 4 level
GrassMaster versus Lawn Command: the parameters behind the verdict, then further details
ParameterGrassMasterLawn Command
Price$2.99Free — better
Rating—5.0 (13 ratings) — better
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings—13 — better
Update frequencyEvery 7 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size5 MB49 MB
Age rating4+4+
DeveloperJohn LullieBroadleaf Labs LLC

Customer experience

GrassMaster

Written reviews12 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Lawn Command

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews11 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GrassMaster

No in-app purchases

2 purchases

Lawn Command

Subscriptions2
  • Lawn Command Pro$4.991 Month
  • Lawn Command Pro$39.991 Year

Questions

Is GrassMaster free?
GrassMaster costs $2.99, with no in-app purchases.
Is Lawn Command free?
Lawn Command is free to download, with in-app purchases available.
Do GrassMaster or Lawn Command have ads?
Neither GrassMaster nor Lawn Command shows ads.
Which is updated more often, GrassMaster or Lawn Command?
GrassMaster ships an update every 7 months, and Lawn Command weekly. Most recently, GrassMaster was updated on September 17, 2026 and Lawn Command on September 1, 2026.

Other comparisons