iPhone Screenshots


New version now includes Overseeding information for most lawn types.

Welcome to GrassMaster!
No Fluff, No history lessons, just exactly what you need to do to have your lawn looking as good as that guy down the street and keep it that way! Plain and simple.

How and when to Fertilize, Water, Treat Weeds and common lawn diseases. GrassMaster includes 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/iPod Touch Calendar App.

(We're working on a direct import to your iPhone/iPod Touch/iPad Calendar App in a future release to make it even easier).

GrassMaster covers the most common Lawn/Turf grasses, including:

Bermuda Grass
Centipede Grass
Fescue Grass
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:

What's New

Version 1.5.0

Updated for iOS 11

Ratings and Reviews

Zoysia yard

Poor app, needs work

Very basic app for beginner. It will get you started but lacks the depth to be useful. It looks pretty but I'm deleting it because it just is not what will work for my zoysia yard. ;(


Not worth a dime

A complete rip off. I learnt nothing new from this app... Absolutely nothing !


Great App!!

The app overall is great if you need information regarding types of grass and their respective maintenance schedules. I am confident you can find most of this information online.

Some Suggestions:

1). I was hoping this app would have information about the over seeding transition. I'm in Texas (DFW) and I have Bermuda that I over seed with perennial rye grass in the winter. I really would like to see the appropriate maintenance schedule for the transition as far as when to apply crabgrass preventers prior to the Bermuda coming back without killing off the rye grass.

2). Please specify how long (minutes) you should set your sprinkler stations for in order to water "2 inches". Also, if the watering should be done every other day, every 2 days etc. I know this depends on rainfall but an actual weekly watering schedule with no rainfall would be great! Since in Texas the summer rainfalls don't occur too often.

If the app gave information about over seeding maintenance for the grasses involved and more in depth information about watering I would definitely give it 5 stars!!

I emailed the app creator about my suggestions/questions and he responded faster than a blink of an eye!!! I highly recommend this app and I look forward to the updates!!


John Lullie
7.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© John Lullie - 2015-2018


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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