Yard Truth

Independent robot mower advisor

Find the robot mower that actually fits your yard.

Retailer filters stop at acreage. Yard Truth measures your lawn, slope, tree cover and passages from your address, then ranks every mower by fit and tells you which ones won't work, and why.

Free. About three minutes. We rank by fit only; commission never changes the order.

Measured, not guessed

Parcel boundaries, USDA aerial imagery and USGS lidar give lawn area, steepest slope, canopy and passage widths. Each figure carries a confidence level; you confirm only what we are unsure about.

Every mower, one yard

28 models across 10 brands scored against your Yard Profile with the same deterministic rules: area, slope, passages, zones, navigation under trees, buildings, Wi-Fi, pets.

The no is the point

Every result explains itself as a spec-versus-yard comparison. “Rated 0.25 acre vs. your 0.41” tells you more than five stars ever will.

How it works

  1. 1
    Enter your address
    We locate the parcel and pull public geospatial data for the lot.
  2. 2
    Confirm the yard
    Lawn area, slope, tree canopy and passages come pre-measured. Drag the outline if it is off.
  3. 3
    Answer a few questions
    Wi-Fi reach, dogs, budget, and anything our data could not settle.
  4. 4
    Read your fit report
    Ranked results in five bands with reasons, an accessory bundle, setup difficulty and where to buy.
  5. 5
    Save your Yard Profile
    Price alerts for mowers that fit, new-model updates, and a check-in after you buy so the data gets better for everyone.
Read about the data and the rules
YARD PROFILE Mowable area: 17,860 sq ft (confidence: high) Zones: 2 (high) Narrowest passage: 4.8 ft (medium → confirmed) Max slope: ~29% (back left) (high) Tree canopy: Moderate (35%) (medium) Building obstruction: High, north side (high) Network RTK: Available (lookup) Fence / gate: Yes / 5 ft (stated) Wi-Fi at lawn: Partial (stated) Pets: Large dog (stated) BEST FIT score 100 Excellent fit ✓ AWD on your 29% slope ✓ LiDAR + RTK fusion keeps a fix under 35% canopy ✓ Multi-zone transit with gate handling NOT RECOMMENDED score 60 Incompatible ✕ Rated 10,764 sq ft (max 12,917) vs. your 17,860 ✕ Max slope 30% vs. your steepest section at 29%

Guides for difficult yards

The constraints that rule mowers out, with the models that clear them.

Robot mowers for steep yards
Which models clear a 30% slope, and which stop at 20%.
Robot mowers under heavy tree cover
RTK signal dies under canopy. LiDAR, vision and wire don't care.
Robot mowers for a half-acre lawn
Sized with the 20–30% headroom dealers recommend.
Robot mowers for one acre
Only a handful of residential models are rated for 40,000+ sq ft.
Robot mowers for front and back lawns
Multi-zone support, passage widths and gate handling.
Robot mowers for a narrow side yard
Minimum passage widths from 2 ft to 3.5 ft, model by model.
Robot mowers without Wi-Fi at the lawn
Models with a cellular module included.
Robot mowers and dogs
Pet detection, small-object avoidance and schedules.
Robot mowers with no boundary wire
RTK, LiDAR and vision navigation compared for wire-free lawns.

Check which mower fits your yard

Three minutes, no account. Your address is used only to measure the lot and is not stored unless you save your profile.

Start the yard check