Purobot Max 3 vs Purobot Crystal Duo
Same brand, adjacent models in the range
Petkit Purobot Max 3
Buy now$399.99
Currently listed price on petkit.com; the page shows a higher regular price.
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Petkit Purobot Crystal Duo
Buy now$199.99
Currently listed price on petkit.com for this open-top disposable-tray model.
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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, $200 below Purobot Max 3 at $399.99.
- Proprietary litter required: published for Purobot Crystal Duo, not for Purobot Max 3.
- Entry height: Purobot Max 3 8.03 in versus Purobot Crystal Duo 7.08 in (13% more). Published data favours Purobot Crystal Duo.
- Proprietary waste bags required: published for Purobot Max 3, not for Purobot Crystal Duo.
- Subscription required: published for Purobot Crystal Duo, not for Purobot Max 3.
- Litter type required: Purobot Max 3 — Clumping clay, tofu, corn or bentonite litters; Purobot Crystal Duo — Petkit Crystal litter disposable tray.
- Odor control method: Purobot Max 3 — Four-part OdorVoid system with sealed waste bin; Purobot Crystal Duo — Disposable absorbent crystal litter tray.
- Footprint: Purobot Max 3 — 24.4 x 21.2 x 21.7 in; Purobot Crystal Duo — 32.2 x 19.96 x 13.14 in.
Full specification comparison
| Attribute | Purobot Max 3 | Purobot Crystal Duo |
|---|---|---|
| Multi-cat suitable | Yes | Yes |
| Minimum cat weight | 3.3 lbs | 3.3 lbs |
| Maximum cat weight | 22 lbs | Not published |
| Waste drawer capacity | 7 L | Not published |
| Litter type required | Clumping clay, tofu, corn or bentonite litters | Petkit Crystal litter disposable tray |
| Proprietary litter required | No | Yes |
| Proprietary waste bags required | Yes | No |
| Subscription required | No | Yes |
| Cleaning cycle trigger | Automatic after the cat exits, with app scheduling | 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 | Four-part OdorVoid system with sealed waste bin | Disposable absorbent crystal litter tray |
| Entry height | 8.03 in | 7.08 in |
| Interior dimensions | Not published by either | Not published by either |
| Footprint | 24.4 x 21.2 x 21.7 in | 32.2 x 19.96 x 13.14 in |
| Operating noise | 35 dB | Not published |
| Power source | AC adapter, 12V/2A | AC adapter, 12V/2A |
| Battery backup | No | No |
| Warranty | 24 months | 24 months |