Litter-Robot 4 vs Petkit PuraMax 2

The Litter-Robot 4 costs $699, full stop. The Petkit PuraMax 2 runs $370-$500 depending on where you buy it. That's a real gap, and for a single-cat household, the Petkit delivers most of the core functionality — automatic scooping, app logging, odor containment — without the premium. The Litter-Robot earns its price through repairability, a larger globe, and a more polished app, but those advantages matter most at scale.

Whisker is the only automatic litter box manufacturer that sells replacement parts for DIY repairs. That's not a minor footnote — it means a sensor glitch or motor issue in year four is a $30 fix, not a $700 replacement. The Petkit has no equivalent program. When something breaks on the PuraMax 2, you're at the mercy of warranty coverage and hoping it fails within the window.

Every other automatic litter box makes you pour litter through a front-facing hole at an awkward angle. The Petkit rotates the entire globe so the opening faces straight up — you pour litter in like a normal container. It sounds trivial until you've spilled litter across your bathroom floor for the third time. The Litter-Robot's front-facing hole is a genuine ergonomic annoyance that Whisker still hasn't fixed.

Both apps log usage, but the Whisker app tracks daily weight, monitors litter and waste levels with alerts, and builds a historical record that's actually useful for spotting health changes. The Petkit app shows weight on the front panel and logs visits, but it's cluttered with ads for other Petkit products — a real annoyance when you're trying to check on your cat at 2am. If you're using this as a health monitoring tool, the Litter-Robot wins decisively.