Big Grass Guy
Lawn journal, plan & AI scan
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: the Shop is now in the menu — shirts and hats for people who cut their own grass. Plus you can delete a lawn you no longer look after.
Meet the Big Grass Guy — your pocket lawn-care expert.
Point your camera at a problem patch and get an instant AI diagnosis: what's wrong — weeds, disease, pests, or nutrient deficiencies — and exactly how to fix it, with both an eco-friendly and a conventional treatment plan for every issue.
Then keep your lawn on track all season with a simple journal, soil tracking, smart reminders, and tips tailored to your grass, your soil, and your local weather.
WHAT YOU CAN DO
• AI lawn diagnosis — Snap or pick a photo and get a clear ID plus organic and conventional treatment options. It's honest about uncertainty and won't invent problems it can't see.
• Plant ID — Point it at anything growing where you'd rather it didn't and find out what it is, before you buy a product for it. Uses the same scan allowance as lawn diagnosis.
• Lawn journal — Log mows, feedings, and treatments with photos, and watch your progress over the season.
• Soil tracking — Record soil tests, see your soil "fingerprint," and follow pH and nutrients over time.
• Smart schedule — Plan your next mow, feeding, or treatment and get reminders. Completing a task logs it to your journal automatically.
• Watering & weather — Track watering and rainfall against a weekly target, with your local forecast built in.
• Personalized recommendations — Get next-step suggestions based on your grass type, soil, recent care, and the weather.
• Lawn health score — A simple 0–100 score that shows how your lawn is trending.
• Multiple lawns — Manage the front, the back, or a client's yard, each with its own data.
PRIVATE BY DESIGN
No accounts. No ads. No tracking. Your journal, soil, and schedule stay on your device. A photo you scan is used only to generate that diagnosis.
BIG GRASS GUY PRO
Your first 3 AI scans are free. For 25 AI scans every month — lawn diagnosis and Plant ID together — upgrade to Big Grass Guy Pro, a monthly auto-renewable subscription.
• Payment is charged to your Apple ID at confirmation of purchase.
• It renews automatically each month unless cancelled at least 24 hours before the end of the period.
• Manage or cancel anytime in your App Store account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://glennball69-boop.github.io/biggrassguy-legal/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Shop
There's a Shop row in the menu now — shirts and hats for people who cut
their own grass. It opens in your browser.
Delete a lawn
You can remove a lawn you no longer look after. It asks first, and it takes
that lawn's journal entries, tasks, soil tests and watering log with it.
Fixes
- The before and after slider now fits your photos properly instead of
cropping them, and the divider draws where you put it.
- Tapping a lawn card no longer drags the Today screen off-centre.
- Tidied up the lawn editor so it opens in one step instead of two.
The developer, Glenn Ball, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Glenn Ball
- Size
- 13.3 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Big Grass Guy Pro $4.99
- Copyright
- © 2026 Power of Grass