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.

My last mower was GPS-based and it died every time it rolled under the big oak in front. The S4's LiDAR just doesn't care about the canopy. Cuts the shaded strip like it's open sky.

No complaints about the actual mowing — the LiDAR navigation under my elm is fantastic and setup was quick. Docking one star because when I wanted to add a small no-go zone the app made me remap a section rather than just letting me draw the exclusion, which felt clunky. Once set it works fine.

Returned a well-known GPS robot mower after two frustrating weeks — it simply couldn't hold position under my maples. The S4 was the opposite experience from the first run. LiDAR navigation, quiet, and the app map was accurate enough that I trusted it near the flower borders by day two. Quick setup too, maybe 25 minutes and zero trenching. This is what I wanted the first mower to be.

I want to be fair because the core product is genuinely great — the 3D LiDAR solved the tree-canopy problem that sent my last mower back to the store, and the quick wireless install won me over. My constructive note is a firmware quirk: on heavy-dew mornings it has twice paused and reported a sensor obstruction that clears itself once things dry. Not a dealbreaker and probably a sensitivity setting, but I'd love it tuned so I don't have to restart the run. Still recommend it, especially for shaded yards.

Serious question I had before buying, and the answer is that the S4 doesn't rely on a satellite signal to know where it is — the 3D LiDAR builds the map itself. My yard is a quarter acre with a heavy tree line down one side and my old unit would just wander into the beds when it lost signal. The S4 has run under that canopy a dozen times now without a single lost-position error. Install was well under half an hour with nothing to bury. If your yard has shade, this is the one.

Timed the install out of curiosity — 22 minutes from box to first mow. No wires. Blown away.

The LiDAR performance in shade is everything I hoped for and the install was fast. Giving it a 4 only because along one straight fence line it leaves a slightly wider uncut margin than I'd like, so I still touch up that edge by hand occasionally. Everything in the open and under the canopy is excellent though.

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.

Three things stood out. The install genuinely took about 20 minutes with no wire. The LiDAR handles my shaded back corner where nothing else worked. And it's quiet enough that I run it in the early evening without a single complaint from the folks next door. Really well done for a wireless mower.

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.

Saw it was a CES 2026 Innovation Honoree and figured that was marketing. It's not. The way the LiDAR maps and navigates around the tree trunks and the swing set is genuinely a step above what I had.

Half my lot is under a canopy of pines. Every other robot I researched warned about signal loss in shade. The LiDAR on the S4 made that a non-issue — it maps the space instead of needing the sky. Couldn't be happier.

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.