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.

We have six mature oaks and every GPS mower I tried before drifted or gave up in the shade. The S4's LiDAR just keeps its place. Night and day difference.

Neighbor buried wire for his; mine mapped itself with LiDAR in one walk. Cut is precise right up to the beds. Couldn't be happier.

Navigation and cut are top notch, especially around the trees. I just want finer control over mow times in the app — right now it's a little basic.

For a shaded quarter-acre this is the one. Only small gripe is the rain sensor sends it home at the first drizzle, but I'd rather that than a stuck mower.

Love the mower. Cutting and mapping are excellent. Just wish the app showed more history/usage data. Minor. Still a strong five for the hardware.

Read it was a CES 2026 Innovation honoree and figured I'd try it. The mapping is genuinely smart — it found the tight spots between my planters that I didn't think a robot could reach.

I timed it. Twenty-two minutes including charging the app account. No wire to bury was the whole reason I bought it and it delivered.

I have three big oaks and a GPS-only mower I returned last year kept getting lost in the shade. The S4 with 3D LiDAR just doesn't care — it maps and keeps its position under the canopy. Game changer for a tree-heavy yard.

Was worried about the low clearance under the kids' trampoline and the tight gate to the side yard. It threads both without getting stuck. Very impressed with the navigation.

Half the yard bakes in sun, half sits under oaks, and the finish is identical across both. The LiDAR doesn't care how much shade there is. Consistent every time.

You feel the engineering the first time it threads under the trees without losing its place. Deserves the award.

My old mower always left uncut patches under the trees. Not one with the S4 — it maps every corner.

Genuinely surprised. Walked the border once in the app, dropped a couple keep-out zones, done. No trenching, no professional install. It's been mowing on schedule ever since.

I'm a physical therapist and I actually suggest this to patients who can't push a mower anymore. The S4 handles a shaded quarter acre on its own — I put one in my own tree-heavy yard too.

Spent a whole weekend once burying wire for my last mower. The S4 needed none of it. LiDAR does the boundary work and it's more accurate than the wire ever was.

Our cabin is up north under thick pines and we only visit monthly. The S4 keeps the yard mowed in all that shade while we're away. Best thing we've done for the place.