Litter-Robot 5 Pro vs Purobot Crystal Duo
One requires the maker's own litter, the other takes standard litter
Whisker Litter-Robot 5 Pro
Buy now$999
Manufacturer US store starting price
List price · checked Oct 27, 2026▲ +$100 · Oct 23, 2026Buy now
Petkit Purobot Crystal Duo
Buy now$199.99
Currently listed price on petkit.com for this open-top disposable-tray model.
List price · checked Oct 27, 2026▲ +$40 · Oct 8, 2026Buy now
Verdict
Purobot Crystal Duo has the lower list price ($199.99 vs $999). On the attributes both makers publish with a clear better direction, the published figures favour Litter-Robot 5 Pro on 3 and Purobot Crystal Duo on 2. This summary uses manufacturer-published data only; we have not tested either model.
Key differences
| Attribute | Litter-Robot 5 Pro | Purobot Crystal Duo |
|---|---|---|
| List price | $999 | $199.99 |
| Proprietary litter required | No | Yes |
| Minimum cat weight | 3 lbs | 3.3 lbs |
| Subscription required | No | Yes |
| Entry height | 15.75 in | 7.08 in |
| Warranty | 12 months | 24 months |
| Litter type required | Clumping clay litter | Petkit Crystal litter disposable tray |
| Cleaning cycle trigger | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type | Automatic after the cat exits, with app scheduling |
| Odor control method | WasteID-targeted odor control with sealed waste drawer and carbon filter | Disposable absorbent crystal litter tray |
| Footprint | 22 x 27 x 29.9 in | 32.2 x 19.96 x 13.14 in |
Who should buy which
- Choose the Litter-Robot 5 Pro if you prioritise Proprietary litter required, Minimum cat weight and Subscription required, based on published figures.
- Choose the Purobot Crystal Duo if you prioritise a lower list price, Entry height and Warranty, based on published figures.
Where the published data differs
Every line below is computed from the two manufacturers’ own figures. Attributes neither brand publishes are omitted.
- Purobot Crystal Duo lists at $199.99, $799.01 below Litter-Robot 5 Pro at $999.
- Proprietary litter required: published for Purobot Crystal Duo, not for Litter-Robot 5 Pro.
- Entry height: Litter-Robot 5 Pro 15.75 in versus Purobot Crystal Duo 7.08 in (122% more). Published data favours Purobot Crystal Duo.
- Warranty: Purobot Crystal Duo 24 months versus Litter-Robot 5 Pro 12 months (100% more). Published data favours Purobot Crystal Duo.
- Minimum cat weight: Purobot Crystal Duo 3.3 lbs versus Litter-Robot 5 Pro 3 lbs (10% more). Published data favours Litter-Robot 5 Pro.
- Subscription required: published for Purobot Crystal Duo, not for Litter-Robot 5 Pro.
- Litter type required: Litter-Robot 5 Pro — Clumping clay litter; Purobot Crystal Duo — Petkit Crystal litter disposable tray.
- Cleaning cycle trigger: Litter-Robot 5 Pro — Weight sensor starts the cycle after the cat exits; WasteID identifies waste type; Purobot Crystal Duo — Automatic after the cat exits, with app scheduling.
Full specification comparison
| Attribute | Litter-Robot 5 Pro | Purobot Crystal Duo |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3 lbs | 3.3 lbs |
| Maximum cat weight | 30 lbs | Not published |
| Waste drawer capacity | Not published by either | Not published by either |
| Litter type required | Clumping clay litter | Petkit Crystal litter disposable tray |
| Proprietary litter required | No | Yes |
| Proprietary waste bags required | No | No |
| Subscription required | No | Yes |
| Cleaning cycle trigger | Weight sensor starts the cycle after the cat exits; WasteID identifies waste type | Automatic after the cat exits, with app scheduling |
| Adjustable cycle delay | Yes | Yes |
| App control | Yes | Yes |
| Weight sensing | Yes | Yes |
| Health monitoring | Yes | Yes |
| Odor control method | WasteID-targeted odor control with sealed waste drawer and carbon filter | Disposable absorbent crystal litter tray |
| Entry height | 15.75 in | 7.08 in |
| Interior dimensions | Entryway 15.75 x 15.75 in; interior height 17.5 in | Not published |
| Footprint | 22 x 27 x 29.9 in | 32.2 x 19.96 x 13.14 in |
| Operating noise | Not published by either | Not published by either |
| Power source | AC power | AC adapter, 12V/2A |
| Battery backup | Not published | No |
| Warranty | 12 months | 24 months |