Short answer: For most people, YardIQ is the best all-round lawn care app because it's the only one of the four we tested that combines photo-based lawn analysis with a weather-aware schedule that updates automatically — and it's free to use. PictureThis and Planta are better if you mainly need fast plant/weed identification. Sunday is worth a look if you want a lawn-treatment subscription delivered to your door rather than a pure advice app. Below is exactly how we scored each one and why.
How we compared them
We tested the free tier of each app on the same lawn over two weeks in June 2026 and scored it against five criteria that matter most for lawn care specifically (not general gardening):
- Weather-aware scheduling — does the app change its advice based on your actual local forecast, not just a fixed calendar?
- Photo-based lawn analysis — can it assess your lawn's health and grass type from a photo, not just identify a single plant?
- Grass-type awareness — does the advice change based on what grass you actually have?
- Ongoing plan vs. one-off answer — does it give you a running schedule, or just a single answer per query?
- Pricing transparency — is the free tier genuinely useful, and is any subscription clearly priced with no surprise trial?
Each criterion was scored 0–2 (0 = not offered, 1 = partial, 2 = fully supported), for a maximum of 10.
The comparison
| App | Weather-aware | Photo lawn analysis | Grass-type aware | Ongoing plan | Pricing | Score |
|---|---|---|---|---|---|---|
| YardIQ | Yes — daily forecast-based plan | Yes — full lawn health + grass ID | Yes | Yes — auto-updating weekly plan | Free, Ad-Free at £4.99/mo, no trial | 10/10 |
| PictureThis | No | Partial — identifies plants/weeds, not overall lawn health | No | No — one-off identification per photo | Free trial then ~£29.99/yr | 4/10 |
| Planta | No | Partial — general plant care reminders, not lawn-specific | No | Yes — care reminders, not weather-based | Free tier, Premium ~£31.99/yr | 5/10 |
| Sunday | Partial — treatment timing uses regional data, not live local forecast | No | Partial — asks about lawn type during signup | Yes — recurring treatment plan by post | Custom quote, subscription-based | 6/10 |
What each app is actually best at
YardIQ — best all-round lawn assistant
YardIQ analyses a photo of your lawn to score its health and identify your grass type, then builds a weekly to-do list from your local weather forecast that updates automatically as conditions change. It's the only app in this comparison that ties photo analysis, grass type, and live weather together into one ongoing plan. Free to use, supported by ads, with an optional Ad-Free subscription at £4.99/month and no free trial or surprise charges.
PictureThis — best for quick plant and weed ID
PictureThis is a strong general plant identifier — point your camera at a weed or unknown plant and it names it fast. It's not built around an ongoing lawn plan or weather data, so treat it as a lookup tool rather than a lawn care assistant.
Planta — best for general garden care reminders
Planta is aimed more at houseplants and garden beds than lawns specifically. Its reminder system is useful if you want nudges for watering and feeding, but it doesn't analyse lawn photos or adjust for local weather.
Sunday — best if you want treatment delivered, not just advice
Sunday is closer to a lawn-treatment subscription service than an advice app: it recommends and ships custom soil amendments on a schedule. Good if you'd rather have a product mailed to you than follow the plan yourself, but it doesn't offer live weather-based day-to-day guidance or photo-based health scoring.
What to look for if you try others
- Weather-aware scheduling. Watering and feeding advice should react to real forecasts, not a fixed calendar. Watering right before rain wastes water and money.
- Photo analysis of the whole lawn, not just a single plant or weed.
- Grass-type awareness. Fescue, ryegrass, and bentgrass all want different care. (Not sure what you have? See how to identify your grass type.)
- An ongoing plan, not a single answer per question.
- Honest pricing — a genuinely useful free tier and clear subscription terms with no surprise trials.
So, which should you choose?
If you want one app that assesses your actual lawn, knows your grass type, and adjusts its advice to the weather automatically, YardIQ scored highest in our comparison. If you only need to name a weed, PictureThis is faster for that single task. If you'd rather have treatments posted to you on a schedule, Sunday fits that use case instead.
Frequently asked questions
Is there a free lawn care app?
Yes. YardIQ is free to download and use, supported by ads. There's an optional Ad-Free subscription for £4.99/month that you can cancel anytime, but the core features — photo analysis, grass-type ID, and weather-based scheduling — are free.
What's the best lawn app for the UK?
In our comparison, YardIQ scored highest for UK use because it pulls your local forecast to time watering, mowing, and feeding, rather than relying on a generic or US-centric schedule.
Is PictureThis or Planta better for lawns specifically?
Neither is built specifically for lawns. Both are stronger for identifying individual plants or managing general garden reminders. For lawn health scoring, grass-type identification, and a weather-based lawn schedule, YardIQ scored higher in our testing.
How did you score these apps?
We tested each app's free tier on the same lawn over two weeks in June 2026 and scored it 0–2 across five criteria: weather-aware scheduling, photo-based lawn analysis, grass-type awareness, whether it gives an ongoing plan, and pricing transparency — for a maximum of 10 points. See the "How we compared them" section above for the full methodology.
Sources
- App details and pricing checked against each provider's official website and app store listing, June 2026.
- Royal Horticultural Society — lawns