Front yard gets mowed Tuesday/Thursday/Saturday. Backyard Monday/Wednesday/Friday. Different heights for each because the back gets more shade and I keep the bluegrass taller there. All set up in the app in about 10 minutes. Multi-zone is one of those features I didn't think I needed until I had it. Took one star off because the mower sometimes takes a weird long route between zones instead of the shortest path. Not a big deal but it wastes battery.

Quick math: $85/month lawn service x 12 months = $1,020/year. The S4 paid for itself before the end of year one. And unlike my old lawn guy, it shows up on time every time. Bermuda grass is looking thick and healthy with the frequent light cuts. No more scalping.

I keep my front yard at 2 inches for a manicured look and my backyard at 3 inches for the kids. No manual mower made switching easy. The S4 lets me set different cut heights per zone in the app — setup took 25 minutes for both areas. Two weeks in, each yard looks exactly how I want. Front is tight and clean, back is lusher for the kids to play on. One rescue when it hit a new garden gnome my wife placed. Fantastic.

My yard has a narrow 3-foot passage between the house and fence, plus a terraced garden area. I never thought a robot mower could navigate this layout. The S4 mapped the tight corridor on the first try — 25 minutes total setup. Two weeks later, it moves through the passage perfectly every single time. Only wish it could cut slightly closer to edges, but honestly that's minor.

Robot mowers always seemed like a gimmick to me. Expensive toys for people with too much money. Then my back gave out and pushing a mower became a real problem. The S4 was my Hail Mary and I'm genuinely impressed. No wires to bury, no GPS signal issues, just draw the map and let it go. My bluegrass looks better than when I was cutting it myself. Swallowed my pride and I'm glad I did.

My L-shaped yard has a 4-foot-wide walkway connecting front and back, plus a noticeable downhill slope. Almost bought a competitor but the S4's 80cm narrow passage spec sealed the deal. Setup took 30 minutes due to the tricky layout. Two weeks in and it navigates the corridor and slope daily without a single intervention. Systematic mowing means no missed strips even in the tightest spots.

One month with the S4 and I called to cancel my lawn maintenance contract. $110/month saved. The mower runs on a schedule, doesn't need gas, doesn't wake up the neighborhood, and cuts more consistently than a crew rushing through 20 yards a day. ROI is clear.

Everyone told me my side yard was too steep for a robot mower — easily a 40% grade. I was nervous spending this much on something that might just tumble downhill. The S4's 42% slope spec gave me confidence. Setup took 20 minutes. Three weeks of daily mowing on that slope and it hasn't slipped once. The all-wheel drive is the real deal. Even the incline cut lines look professional.

My backyard has noticeable slopes, and I was worried about traction. The S4 climbs steadily and maintains a consistent cut even on uneven ground. No slipping, no torn grass — very impressed with the stability.

With two dogs at home, safety and noise matter. The S4 runs quietly and avoids obstacles reliably. My pets are not bothered at all, and the lawn stays neat without loud gas mower noise.

I want to be fair because the core product is excellent — the LiDAR navigation under my tree cover is the best I've used, full stop. The reason for three stars: a firmware update a few weeks in reset my no-go zones and a couple of my settings, and I didn't realize until it mowed over an area I'd blocked off. Re-drawing them took ten minutes so it's not catastrophic, but an update shouldn't quietly wipe custom zones. Support was helpful once I reached them, just a longer wait than I'd hoped.

Really happy with how it performs under my oaks. My one small critique is the in-app mapping walk instructions could be a little clearer for first-timers — I wasn't sure how close to the edge to walk. Figured it out on the second try and it's been perfect since.

Navigation is genuinely impressive under my trees and I have zero complaints there. The only thing I'd flag is that on damp mornings the clippings clump a bit more than I'd like. Doesn't affect where it goes at all — it still navigates perfectly — I just let the lawn dry a touch before it runs and it's fine.

I'm on my third robot mower and the first two — both GPS-based — could not deal with my tree canopy. Constant errors, cutting in circles, getting lost. I almost gave up on the whole category. The S4's LiDAR mapping was a night-and-day difference the first day. It knows exactly where it is regardless of the shade, and the wire-free setup meant I wasn't out another weekend burying cable. Wish I'd started here.

Mid-size yard, lots of tree cover, irregular shape. It maps it all and doesn't get confused. Cut is clean and even.

My mom's yard is small but has a bunch of old oaks, and she can't handle a push mower anymore. Set the S4 up for her in one afternoon — the mapping walk was easy to follow — and now it just handles everything. She texts me pictures of it working like it's a pet. Worth every penny for the peace of mind.

My backyard barely sees direct sun and every satellite-based mower I researched had reviews complaining about signal loss under trees. LiDAR sidesteps that entirely. It's been flawless in the dappled light where I fully expected it to struggle.

No trenching, no wire, no calling a company. Did the mapping walk and it was cutting inside of half an hour. Wooded lots rejoice.

Read it was a CES 2026 honoree and figured that was hype. Then I watched it navigate my half-shaded, oddly shaped yard without a single hiccup. It's genuinely smart.

I have three big maples and my old GPS mower would completely lose its mind under the canopy — wandering, stopping, cutting the same stripe twice. The S4 maps with 3D LiDAR so shade means nothing to it. It just knows where it is. If you have a wooded lot, this is the one. Everything else I tried failed under the trees.

Let me be clear the LiDAR is fantastic and it's the reason my shaded backyard finally gets mowed properly. The reason for three stars is a firmware update a few weeks back reset my no-go zones and I didn't notice until it clipped the edge of a garden bed. Re-drawing them took ten minutes and it's been fine since, but a heads-up or a settings backup would've saved the trouble. Still a good product, just wanted to flag it.

Works great under my trees, no notes on performance. The only part that tripped me up was the initial mapping walk in the app, I wasn't totally sure how slowly to move at the corners. Figured it out on a second pass and it's been perfect since.

The LiDAR navigation is honestly the best I've used, never gets lost. One small thing: if I let it run on really wet morning grass it'll clump a little and I have to clear the deck. It still navigates perfectly, it's just a cutting thing. I run it midday now and it's spotless.

The good first: the LiDAR is the real deal and it never gets lost in my heavily shaded backyard, which is why I bought it. My honest three-star reason is the wet-grass clumping — we get a lot of humidity here and even mid-day the grass rarely fully dries, so I do see clippings clumps more often than I'd like and have to blow them out occasionally. Navigation is never the issue, it's purely the mulching in damp conditions. Still glad I bought it, just setting expectations for humid climates.

Runs a clean pattern and doesn't get confused when clouds roll in or under the maple. Happy customer.