X5 vs Litter-Robot 4

Highest-completeness models in the category

Preorder$319.95

Pre-order price on popur.com against a regular price of $499.95.

▲ +$10 · Sep 22, 2026

Preorder · Popur's own listing is labelled pre-order in the US with a stated ship date.

Buy now$699

Whisker lists the unit from $699; colour and bundle options raise the price.

Buy now

Where the published data differs

Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.

X5 lists at $319.95, $379.05 below Litter-Robot 4 at $699.
Proprietary waste bags required: published for X5, not for Litter-Robot 4.
Odor control method: X5 — Separate external bin liner system; Litter-Robot 4 — Sealed waste drawer with carbon filter.

Popur X5 compared with Whisker Litter-Robot 4
Attribute	X5	Litter-Robot 4
Multi-cat suitable	Yes	Yes
Minimum cat weight	Not published	3 lbs
Maximum cat weight	33 lbs	Not published
Waste drawer capacity	Not published by either	Not published by either
Litter type required	Not published	Clumping clay litter
Proprietary litter required	Not published	No
Proprietary waste bags required	Yes	No
Subscription required	No	No
Cleaning cycle trigger	Not published	SmartScale weight sensor starts a countdown after the cat exits (3 lb minimum to register)
Adjustable cycle delay	Not published	Yes
App control	Yes	Yes
Weight sensing	Not published	Yes
Health monitoring	Not published	Yes
Odor control method	Separate external bin liner system	Sealed waste drawer with carbon filter
Entry height	Not published by either	Not published by either
Interior dimensions	Not published by either	Not published by either
Footprint	Not published by either	Not published by either
Operating noise	40 dB	Not published
Power source	Not published	AC power
Battery backup	Not published by either	Not published by either
Warranty	12 months	12 months