# Petlibro Luma vs Whisker Litter-Robot 4

As of Nov 4, 2026, the Petlibro Luma costs $600 and the Whisker Litter-Robot 4 costs $699, so the Petlibro Luma is $99 cheaper. The Petlibro Luma has a published review score and ranks #12 in our self cleaning litter boxes ranking; the Whisker Litter-Robot 4 is not scored yet. Pick the Petlibro Luma for tracking each cat's habits. Pick the Whisker Litter-Robot 4 for one to four average size cats.

Prices checked Nov 4, 2026. HTML version: https://robotsforthat.com/vs/petlibro-luma-vs-whisker-litter-robot-4/

## Side by side

| | Petlibro Luma | Whisker Litter-Robot 4 |
|---|---|---|
| Price | $600 | $699 |
| 3 year cost | $600 | $1,035 |
| Our score | 7.1/10 | Not scored yet |
| Rank in Litter box | #12 | #23 |
| Status | on sale | on sale |
| Warranty | 24 months (maker) | 1 year (WhiskerCare), extendable to 3 years; 90 day in home trial |
| Cat weight range | 2.2 to 22 lb (maker) | 3 to 25 lb (kittens under 3 lb need semi automatic mode) |
| Max cats | Recognizes up to 10 cats (maker) | Up to 4 |
| Waste drawer | 11 L (2.9 gal), up to 7 days for 2 cats (maker) | Sealed drawer with carbon filter, as little as once every 8 days (maker claim) |
| Sensors | Weight, camera and infrared motion sensors with anti pinch protection | Laser and weight sensors, SmartScale cat weight tracking, SafeCat system |
| App | Petlibro app (iOS and Android); AI waste analysis and video history need a $9.99 per month plan | Whisker app (2.4 GHz WiFi); free 7 day view, Whisker+ optional |
| Litter type | Clumping, tofu and mixed litters; not crystal, pine or ultra fine litter | Clumping clay recommended; crystals only if they pass the screen; plant based and pellet litters not recommended |
| Size | 23.3 x 22.5 x 28.1 in, 17.4 in entrance, 33.01 lb | 22 x 27 in footprint, 29.5 in tall, 15.75 x 15.75 in entry, 24 lb empty |
| Noise | 35 to 47 dB depending on fan speed (maker claim) | No dB rating published; QuietSift motor |
| Best for | tracking each cat's habits | one to four average size cats |
| Skip if | you want no subscription or keep it on carpet | your cat is over 25 lb |

## What reviewers found

### Petlibro Luma

- Cats.com (4.5/5): Easy setup, quick cat acceptance, quiet raking and a sealed drawer; AI analysis needs a subscription and some owners report weight sensor false detections. [Source](https://cats.com/petlibro-luma-automatic-litter-box-review)
- Tom's Guide: After several months with two cats, the cats used it more than a Litter-Robot 5 placed beside it, and the app flagged when one cat stopped using the box for a week. [Source](https://www.tomsguide.com/home/smart-home/my-cats-have-been-using-this-open-top-robotic-litter-box-for-3-months-and-its-usd100-off-right-now)

### Whisker Litter-Robot 4

- Cats.com: Runner Up in the October 2026 roundup; reliable and well built, but the smaller litter bed may not suit large cats. [Source](https://cats.com/reviews/best-self-cleaning-litter-box)
- The Irish Times: Quiet, no smells and a clean tray in a home test; sensors stopped the drum when a cat entered; app cat ID was less accurate for cats of similar size. [Source](https://www.irishtimes.com/technology/consumer-tech/review/2026/10/03/litter-robot-4-review-fed-up-with-scooping-cat-litter-try-this/)
- CNN Underscored: Drawer needed emptying about once a week with two cats; quieter than the Litter-Robot 3; cats took about a week to adjust. [Source](https://amp.cnn.com/cnn/cnn-underscored/reviews/litter-robot-4-review)

## Questions buyers ask

### Which is better, the Petlibro Luma or the Whisker Litter-Robot 4?

The Petlibro Luma has a published review score and ranks #12 in our self cleaning litter boxes ranking; the Whisker Litter-Robot 4 is not scored yet. Pick the Petlibro Luma for tracking each cat's habits. Pick the Whisker Litter-Robot 4 for one to four average size cats.

### Which is cheaper?

The Petlibro Luma at $600, versus $699 for the Whisker Litter-Robot 4, checked Nov 4, 2026. Over 3 years with running costs: $600 vs $1,035.

### What is the difference between the Luma and the Litter-Robot 4?

Cat weight range: 2.2 to 22 lb (maker) on the Luma, 3 to 25 lb (kittens under 3 lb need semi automatic mode) on the Litter-Robot 4. Max cats: Recognizes up to 10 cats (maker) on the Luma, Up to 4 on the Litter-Robot 4. Waste drawer: 11 L (2.9 gal), up to 7 days for 2 cats (maker) on the Luma, Sealed drawer with carbon filter, as little as once every 8 days (maker claim) on the Litter-Robot 4.

Full reviews: [Petlibro Luma](https://robotsforthat.com/robot/petlibro-luma/index.md), [Whisker Litter-Robot 4](https://robotsforthat.com/robot/whisker-litter-robot-4/index.md)