Our Verdict
PETKIT PuraMax 2 Wins

Its 7.0L waste bin offers extended hands-free use for up to 15 days. Choose Vivirata for cats up to 25 lbs and its OmniSense dual safety sensors, offering slightly higher weight capacity.
Bottom Line: PETKIT PuraMax 2 is the better choice. Its 7.
Key Differences
The most significant spec differences at a glance
Max Pet Weight Lbs
12% lessWaste Drawer
27% moreWeight
8% lessAdvantages
Where each product wins
PETKIT
- Waste Drawer: 27% higher (7.0 vs 5.5)
- Weight: 8% lower (22.0 vs 24.0)
vivirata
- Max Pet Weight Lbs: 12% higher (22.0 vs 25.0)
Who Should Buy Which?
Find the right product for your needs
Buy PETKIT if...
PETKIT PuraMax 2 Automatic
The ideal buyer for the PETKIT PuraMax 2 is a cat owner who prioritizes their pet's health monitoring and desires minimal litter box maintenance. If you value detailed tracking of individual cat health data, weight, and usage via an app, this is for you. Its 7L waste bin provides up to 15 days of hands-free use, ideal for busy individuals. Owners of older or mobility-limited cats will appreciate the low 7.87-inch entry. You're willing to invest more for superior features like sealed base urine leakage prevention and advanced safety sensors.
Buy vivirata if...
Vivirata Automatic Litter Box
The Vivirata Automatic Litter Box is perfect for cat owners, especially those with multiple cats or larger felines up to 25 lbs, seeking an effective yet more budget-friendly self-cleaning solution. If affordability ($199.98) is a primary concern but you still want modern conveniences like WiFi app monitoring and dual safety sensors, this is an excellent choice. You appreciate quiet operation and can accommodate its larger footprint, prioritizing its higher max pet weight capacity over a slightly smaller waste drawer (5.5L).
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $282 | $200 |
| Rating | 4.2(778) | 4.4(133) |
| Sensor Type | infrared, weight | OmniSense |
| Max Pet Weight | 22 lbs | 25 lbs |
| Waste Capacity | 7L | 5.5L |
| App Subscription | — | Free |
| Weight | 22 lbs | 24 lbs |
| WiFi | Yes | Yes |
| Dimensions | 21.18" × 21.73" × 24.4" | 22" × 30" × 27" |
| Model Number | — | 4073D |
| Cleaning Cycle | — | 7 min |
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Pros & Cons
Quick overview of strengths and weaknesses
PETKIT PuraMax 2
- Prevents urine leakage with sealed base and pad design.
- Tracks individual cat health data, weight, and usage via app
- 7L waste bin provides up to 15 days of hands-free use.
- Multiple sensors ensure cat safety during cleaning cycles.
- Requires placement on flat, hard floor to ensure sensor func
- Not suitable for young pets under 6 months or 3.3 lbs.
- Only compatible with 2.4GHz WiFi networks for app control.
- Not compatible with K3 Smart Spray odor remover.
vivirata Automatic Litter
- Auto-cleans after each use
- WiFi app monitoring
- Fits cats up to 25 lbs
- Low noise operation
- Large footprint
- High upfront cost
- Requires specific litter
Frequently Asked Questions
Common questions about this comparison
Which litter box is better for larger pets?
Vivirata accommodates cats up to 25 lbs, slightly more than PETKIT's 22 lbs limit. However, PETKIT's 7.0L waste capacity offers longer hands-free use compared to Vivirata's 5.5L, which might be better for multi-cat households despite the lower weight limit.
What is the difference in waste drawer capacity?
PETKIT PuraMax 2 offers a larger 7.0-liter waste drawer, providing up to 15 days of hands-free use. The Vivirata Automatic Litter Box has a smaller 5.5-liter capacity, requiring more frequent emptying.
How do the safety sensor types compare?
PETKIT uses "infrared, weight" sensors for safety and tracking. Vivirata features "OmniSense" dual safety sensors. Both systems are designed to ensure pet safety during cleaning cycles, offering different approaches to detection.
Is there an app subscription cost for either product?
Vivirata explicitly states a 0 app subscription cost. PETKIT does not list an app subscription cost, implying that its app features, including health data tracking, are included without extra fees.
Which option is better for older or mobility-limited cats?
The PETKIT PuraMax 2 is designed with a low 7.87-inch entry, making it highly suitable for older or mobility-limited cats. Vivirata does not specify a low entry feature in its description.
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