Litter-Robot 3 Connect vs PETKIT Purobot Ultra
Every standardized field on both boxes, lined up. Nothing is retyped — both columns read from the same database as the reviews.
Scores side by side
| Category | Litter-Robot 3 | Purobot Ultra |
|---|---|---|
| Cleaning | 8.6 | 8.8 |
| Odor control | 8.0 | 9.0 |
| Safety | 8.4 | 8.9 |
| App | 8.2 | 9.2 |
| Maintenance | 8.0 | 7.4 |
| Value | 7.6 | 6.4 |
| Overall | 8.2 | 8.5 |
Cost to own
| Total spend after | Litter-Robot 3 | Purobot Ultra |
|---|---|---|
| Running cost per year | $75 | — |
| 1 year | $624 | — |
| 3 years | $774 | — |
| 5 years | $924 | — |
Every specification
Rows where the two differ are highlighted.
Size & fit
| Dimensions (W x D x H) | 24.25 x 27 x 29.5 in | 20.86 in L x 32.4 in W x 24.01 in H |
|---|---|---|
| Floor footprint | 24.25 x 27 in | 20.86 x 32.4 in |
| Entry height | 10 in | — |
| Unit weight | 24 lb | 46 lb |
| Minimum cat weight | 5 lb | — |
| Maximum cat weight | 15 lb | — |
| Entry opening | — | — |
Capacity & litter
| Waste drawer capacity | 7.5 L | 10 L |
|---|---|---|
| Litter types accepted | Clumping clay | Clumping clay, Tofu, Mixed |
| Litter capacity | — | — |
| Interior volume | — | — |
| Rated for multiple cats | Yes | Yes |
| Cats supported | Up to 4 | — |
Smart features
| Wi-Fi | Yes | Yes |
|---|---|---|
| App | Whisker (iOS, Android) | PETKIT (iOS, Android), 2.4 GHz and 5 GHz |
| Power | Mains, 24 V adapter | — |
Odor & noise
| Odor system | Carbon filter + sealed drawer | Auto-sealed waste bag + N60 odour eliminator |
|---|---|---|
| Measured noise | ~50 dB at 3 ft | — |
| Cycle time | ~2 min 45 s | — |
Safety
| Safety sensors | Weight sensor, Cat sensor pause | — |
|---|
Running costs
| Waste bag type | Standard kitchen bags | PETKIT bag roll (auto-seal, auto-refill) |
|---|---|---|
| Bag cost per year | 30 | — |
| Filter cost per year | 45 | — |
| Warranty | 18 months | — |
| Requires proprietary bags | — | Yes |
Which one, for whom
Litter-Robot 3 Connect
Best for
- Single-cat homes
- Buyers who want Whisker support at a lower price
- People who like repairable hardware
Not ideal for
- Large cats
- Kittens or arthritic seniors
- Anyone sensitive to motor noise
PETKIT Purobot Ultra
Best for
- Multi-cat homes needing per-cat health data
- Cats with a monitored medical condition
- App-first buyers
Not ideal for
- Anyone avoiding consumable lock-in
- Privacy-sensitive households
- Budget buyers