Litter Robot 3 vs 4

Litter Robot 3 vs 4 Comparison 2024: Which One Should be Good for You?

When it comes to automatic cat litter boxes, the Litter-Robot series stands out for its innovative approach to handling one of the less pleasant aspects of cat ownership. I’ve had the opportunity to experience both the Litter-Robot 3 and Litter-Robot 4 models firsthand, which has provided a clear perspective on their evolution. So, if you want to know the features and differences of Litter Robot 3 vs 4, you just have come to the right place.

While the Litter-Robot 3 set a high standard in automated cat litter solutions, the Litter-Robot 4 has taken the concept further, incorporating more advanced technology and user-friendly features. In this guide, I have provided a detailed comparison of these two models, helping cat owners decide which one might be the best fit for their home.

Key Takeaways
  • Litter-Robot 4 is more technologically advanced, with better health tracking and quieter operation.
  • Litter-Robot 3 offers solid functionality at a more affordable price.
  • Your choice should be based on budget, the need for advanced features, and space considerations.
Feature Litter-Robot 3 Litter-Robot 4
Design Bulkier, with a narrower entrance Sleeker, compact design with a wider entrance
Odor Control Basic odor control features Enhanced odor control with improved sealing and filter placement
Noise Level Noticeable noise during operation Quieter operation with advanced noise reduction technology
Waste Management Less accurate waste level indicator, manual checks needed Advanced waste and litter level monitoring, more efficient
Health Tracking Lacks advanced health tracking features SmartScale™ technology for detailed health monitoring
App Functionality Limited app control and monitoring Comprehensive app monitoring, including real-time data
Set-up Reliable functionality, but can be cumbersome in setup and use Enhanced user experience with easier setup and maintenance
Suitability for Cats Suitable for up to three cats Can accommodate up to four cats, with larger entryway
Sleep Mode Fixed sleep mode period Customizable sleep mode schedule
Price More budget-friendly Higher price point

Design and Size

Litter Robot 3 vs 4

The Litter-Robot 3 and Litter-Robot 4, while similar in their core purpose, exhibit noticeable differences in design and size that cater to different user preferences and spatial constraints. I found that the Litter-Robot 4 boasts a more compact and sleeker design compared to its predecessor. Its dimensions are slightly smaller, which makes a significant difference in how it fits in a room. This reduction in size does not compromise the interior space, which remains spacious enough for cats to use comfortably.

The entrance to the Litter-Robot 4 is wider and more inviting, a feature that my cat appreciated right away. This design change facilitates easier access, especially for larger cats, and seems to contribute to a less intimidating experience for them. On the other hand, the Litter-Robot 3 has a narrower entrance, which can be a limiting factor for bigger cats or those who prefer a more open entryway.

In terms of aesthetics, the Litter-Robot 4 offers a more modern and streamlined look, which I found to blend better with various home decors. The unit’s design feels thoughtful, with a focus on user-friendly access and maintenance. For example, the control panel and waste drawer are more accessible, which simplifies the process of cleaning and interacting with the device.

These design and size considerations play a crucial role in the overall user experience, impacting not just the pet’s interaction with the device but also how the owner integrates it into their living space. The choice between these models, therefore, may come down to personal preference for size, access, and aesthetic appeal in a home environment.

Smart Features

Getting into the technological differences between the Litter-Robot 3 and Litter-Robot 4, the latter undoubtedly takes the lead with its integration of smart features. One of the standout enhancements I observed in the Litter-Robot 4 is its real-time monitoring capabilities. Through the Whisker App, I could monitor the waste drawer’s fill level and receive notifications about the litter box’s status, which significantly eased the maintenance process.

The Litter-Robot 4’s SmartScale™ technology is another leap forward, offering the ability to track the weight of the waste in the drawer and, more impressively, the weight of my cat. This feature provided peace of mind, as I could monitor my cat’s health indirectly through changes in weight. In contrast, the Litter-Robot 3’s technology felt more basic, relying on rotation counts to estimate waste levels, which required manual resetting after emptying the waste drawer.

Another aspect where the Litter-Robot 4 shines is its user interaction. The device’s control panel is intuitive, with clear indicators for its various functions, from power to connectivity status. This ease of interaction made daily operations smoother and less time-consuming.

Furthermore, the Litter-Robot 4’s enhanced sensors not only contribute to operational efficiency but also improve safety. The unit detects the presence of a cat more accurately, preventing the cleaning cycle from starting and ensuring the pet’s safety.

In summary, the Litter-Robot 4’s advanced technology and smart features significantly surpass those of the Litter-Robot 3, offering a more interactive, safe, and user-friendly experience. The integration of these features makes the Litter-Robot 4 a more appealing option for tech-savvy cat owners who value convenience and detailed monitoring of their cat’s litter box usage and health.

Waste Management and Odor Control

Litter Robot 3 vs 4

In my experience with both Litter-Robot models, waste management stands out as a key area of improvement in the Litter-Robot 4. The design of the waste drawer in the Litter-Robot 4 is notably more efficient, featuring a deeper compartment that can hold more waste while maintaining a compact exterior. This design enhancement not only increases the time between cleanings but also minimizes the odor thanks to its improved sealing.

Odor control is a critical aspect of any litter box, and here the Litter-Robot 4 excels. It incorporates a more strategic placement of the carbon filter and a tightly sealed waste drawer, which together significantly reduce the escape of unpleasant smells. This was a noticeable upgrade from the Litter-Robot 3, where despite having a functional odor control system, I encountered issues with waste clumping and uneven distribution, which sometimes triggered the full indicator prematurely.

Furthermore, the Litter-Robot 4’s intelligent system also helps in efficiently tracking and managing the waste level. With its advanced sensors, the system can accurately gauge how full the drawer is, reducing the guesswork and manual checking required with the Litter-Robot 3. This smart functionality not only makes the Litter-Robot 4 more user-friendly but also contributes to a cleaner and more hygienic environment for both the cat and the home.

In conclusion, the waste management system of the Litter-Robot 4 demonstrates a significant improvement over its predecessor, offering a more user-friendly, efficient, and odor-controlled experience. This makes it a compelling choice for cat owners looking to maintain a clean and odor-free home environment.

Noise Level and Set Up

My personal journey with the Litter-Robot 3 and Litter-Robot 4 revealed a significant difference in user experience. Starting with noise levels, the Litter-Robot 4 presents a marked improvement. Its operation is whisper-quiet, a stark contrast to the more noticeable sound of the Litter-Robot 3’s cleaning cycle. This quieter operation of the Litter-Robot 4 was especially appreciated during nighttime hours, ensuring no disturbances for either my cat or myself.

Setting up the Litter-Robot 4 was straightforward, thanks to its intuitive design and clear instructions. The process felt streamlined compared to the Litter-Robot 3, where positioning and accessing the machine for setup and maintenance could be cumbersome due to its bulkier design. The Litter-Robot 4’s compact size and user-friendly features made it easier to integrate into my home and daily routine.

The app connectivity enhances the user experience, with the Litter-Robot 4 offering a seamless connection to the Whisker App. Through the app, I could easily monitor litter levels, waste drawer status, and my cat’s weight and activity. This level of interaction and data accessibility was a game-changer, providing insights into my cat’s health and the litter box’s maintenance needs.

In terms of safety, both models are designed with cat detection sensors, but the Litter-Robot 4’s sensors are more advanced, reducing the risk of accidental starts during use. This added safety feature, along with the overall ease of use and maintenance, made the Litter-Robot 4 stand out as the more user-centric model.

In conclusion, the user experience with the Litter-Robot 4 is superior, offering significant improvements in noise level, setup, app integration, and safety features. These enhancements not only make daily operations smoother but also contribute to a more harmonious living space for both cats and their owners.

Safety and Health Tracking

Litter Robot 3 vs 4

The Litter-Robot 4 has set a new standard in combining safety with health tracking for our feline friends. From my experience, the safety features in the Litter-Robot 4 are more advanced, with sensors that are finely tuned to detect the presence of a cat. This ensures the cleaning cycle pauses immediately if a cat enters, reducing the risk of any accidents or distress.

Health tracking is another area where the Litter-Robot 4 shines. The integration of SmartScale™ technology allows for continuous monitoring of a cat’s weight, an essential aspect of pet health management. I found this feature to be incredibly useful, as it helped me keep tabs on my cat’s weight fluctuations, which can be early indicators of health issues. This proactive approach to health tracking is something the Litter-Robot 3 lacks, making the Litter-Robot 4 a more appealing choice for pet owners who prioritize health monitoring.

Additionally, the Litter-Robot 4’s ability to track litter box usage patterns provides insights into the cat’s routine, which can be vital for detecting changes in behavior or health. The comprehensive data collected and presented through the Whisker App allows for a detailed understanding of the cat’s litter box habits, further enhancing the ability to monitor their well-being.

In essence, the Litter-Robot 4 not only maintains a high standard of safety but also offers an innovative approach to health tracking, making it a valuable tool for pet owners committed to ensuring their cat’s health and safety.

Price and Value

Assessing the value for money between Litter-Robot 3 and Litter-Robot 4 involves considering both the upfront cost and the long-term benefits. The Litter-Robot 4, with its advanced features and enhanced user experience, comes with a higher price tag compared to the Litter-Robot 3. However, the investment seems justified when you factor in the improvements in technology, safety, and convenience.

The Litter-Robot 4 is priced around $649 to $699, while the Litter-Robot 3 is available for about $549. This price difference reflects the technological advancements and additional features offered by the Litter-Robot 4, such as real-time monitoring, advanced odor control, and detailed health tracking through the Whisker App.

From a value perspective, the Litter-Robot 4 stands out for cat owners who prioritize ease of use, minimal maintenance, and detailed health tracking of their pets. The added cost is offset by the savings in time and effort spent on litter box maintenance, not to mention the potential health benefits from early detection of issues through weight monitoring.

On the other hand, the Litter-Robot 3 still offers significant value, especially for those who may have budget constraints or less demand for advanced monitoring features. It performs the core function of automating the litter-cleaning process effectively, providing convenience and reliability.

In conclusion, the choice between the Litter-Robot 3 and Litter-Robot 4 should be guided by individual needs, preferences, and budget. The Litter-Robot 4, despite its higher cost, presents a compelling case with its superior features and user experience, potentially offering better long-term value for the investment.

Pros & Cons

Litter-Robot 3


  • Cost-effective compared to newer models.
  • Reliable automated litter-cleaning functionality.
  • Suitable for up to three cats.
  • Has basic odor control features.
  • Offers a fixed sleep mode to prevent operation at night.


  • Lacks advanced health and usage tracking features.
  • The waste drawer indicator can be inaccurate, requiring manual checks.
  • Noisier operation during cleaning cycles.
  • Limited app functionality and control options.
  • Bulkier design and less aesthetic than newer models.

Litter-Robot 4


  • Advanced health tracking with weight sensors.
  • Real-time waste and litter level monitoring via the app.
  • Quieter operation with improved noise control technology.
  • Sleek, compact design with a larger entrance for cats.
  • Enhanced odor control and more efficient waste management.


  • Higher price point.
  • Requires more frequent maintenance in multi-cat households due to sensitive sensors.
  • The app’s advanced features might require a learning curve for some users.
  • The larger footprint may not suit smaller spaces.
  • Some reports of sensitivity issues with the litter and waste level sensors.

Litter Robot 3 vs 4: Is the Upgrade Worth It?

The decision to upgrade from Litter-Robot 3 to Litter-Robot 4 hinges on evaluating the new features against the cost. The Litter-Robot 4 introduces advanced technology such as real-time monitoring, enhanced odor control, quieter operation, and health tracking features that offer a more interactive and convenient user experience. For cat owners who prioritize these aspects, especially those with multiple cats or who are tech enthusiasts, the upgrade may be worthwhile.

On the other hand, the Litter-Robot 3 remains a competent and reliable automatic litter box. It provides the basic functionality needed for efficient litter management. If the Litter-Robot 3 meets your needs and the additional features of the Litter-Robot 4 don’t justify the higher price for you, then sticking with the Litter-Robot 3 might be the better option.

In essence, the worthiness of the upgrade is subjective and depends on individual preferences, the importance of the enhanced features, and budget considerations. For those seeking the latest in litter box technology and willing to invest in added convenience and monitoring capabilities, the Litter-Robot 4 is an appealing choice. However, for users who are satisfied with the basic automation and functionality of the Litter-Robot 3, the necessity of upgrading may not be as compelling.

Frequently Asked Questions (F.A.Q)

Is it worth getting a Litter-Robot 4 over a 3?

Whether it’s worth upgrading to a Litter-Robot 4 depends on your needs and budget. The Litter-Robot 4 offers advanced features like real-time waste level monitoring, improved odor control, quieter operation, and health tracking through the Whisker App. If these enhancements align with your needs and you’re willing to pay the higher price, then the Litter-Robot 4 is worth considering.

Is Litter-Robot 4 quieter?

Yes, the Litter-Robot 4 is significantly quieter than the Litter-Robot 3, with technology designed to minimize noise during operation. This makes it more suitable for use in quiet home environments and less likely to disturb sensitive cats.

How often do you need to empty Litter-Robot 4?

The frequency of emptying the Litter-Robot 4 depends on the number of cats using it, but generally, it has a larger waste drawer that can hold more waste, potentially extending the time between emptying compared to the Litter-Robot 3.

Can Litter-Robot 4 work without wifi?

Yes, the Litter-Robot 4 can operate without a Wi-Fi connection, although Wi-Fi is required to access full app functionality, including remote monitoring and health tracking features.

Can you put Litter-Robot on the carpet?

It’s advisable to place the Litter-Robot on a flat, stable surface. A carpet might be used under the Litter-Robot, but it’s important to ensure the unit remains stable and that the carpet does not obstruct any vents or sensors. For optimal operation, placing it on a hard, level surface is usually recommended to prevent any wobbling or instability that could affect the sensors or the cleaning cycle.

Wrapping Up

Choosing between the Litter-Robot 3 and 4 depends on your priorities. The Litter-Robot 4 offers advanced features, superior technology, and enhanced user experience but at a higher price. If you value detailed health tracking and convenience, it’s the better choice. The Litter-Robot 3, while less advanced, still provides effective litter management and can be a more budget-friendly option. Consider your needs and budget to decide which model suits your home and pet best.

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