Big Grass Guy
Lawn journal, plan & AI scan
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: a yearly Pro plan that saves 28%, plus exact mowing heights for your grass — now including Australian couch, kikuyu and soft-leaf buffalo.
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, including the exact mowing height for your grass. Australian and New Zealand grasses (couch, kikuyu, soft-leaf buffalo, Queensland blue couch) are built in, and seasonal advice follows your hemisphere.
• 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. Pro gives you 25 AI diagnoses a month — near enough one for every day of the month — covering lawn diagnosis and Plant ID together. Choose monthly, or go yearly and save 28%. Big Grass Guy Pro is a monthly or yearly auto-renewable subscription.
• Payment is charged to your Apple ID at confirmation of purchase.
• It renews automatically at the end of each month or year 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.
• New yearly Pro plan — save 28% compared with monthly
• Exact mowing heights for your grass type, in inches or millimetres, instead of "mow high"
• When a scan finds thin turf, two mows this week go straight onto your plan to help it thicken up
• Australian and New Zealand grasses added: couch, kikuyu, soft-leaf buffalo and Queensland blue couch
• Seasonal advice now follows southern-hemisphere seasons
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
- 13.4 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 (Yearly) $42.99
- Big Grass Guy Pro $4.99
- Copyright
- © 2026 Power of Grass