Litter-Robot 4 vs Litter-Robot 5: What’s the Difference?

If you’re comparing Litter-Robot 4 vs Litter-Robot 5, both models offer the core benefit of automatic litter cleaning. The bigger question is how much value you place on the additional monitoring, capacity and next-generation features introduced with Litter-Robot 5.

Litter-Robot 4 already combines automatic waste separation, odour management, Whisker app connectivity and cat activity monitoring in a quiet, multi-cat-friendly design.

Litter-Robot 5 builds on that foundation with newer features including WasteID™ technology, a larger waste drawer, expanded activity insights and an enhanced LCD display.

Below, we compare the two models to help Australian cat owners understand the main differences and decide which option may better suit their household.

Litter-Robot 4 vs Litter-Robot 5 at a Glance

Litter-Robot 4 uses smart sensing technology to monitor cat activity, litter levels and waste drawer fullness while providing connected information through the Whisker app.

Litter-Robot 5 retains that connected experience while adding WasteID™, a redesigned waste drawer, an upgraded display and more detailed litter-box activity information.

What Do Litter-Robot 4 and Litter-Robot 5 Have in Common?

At their core, both models are designed to reduce the need for daily litter-box scooping.

After your cat uses the unit, the automatic cleaning process separates waste from clean litter and deposits the waste into a drawer below. Both models are also designed around odour management, multi-cat use and connected monitoring through the Whisker app.

Both provide automatic cleaning, smartphone monitoring, cat weight and usage insights, waste-level monitoring and a cleaner litter bed between visits.

For many households, the decision therefore comes down to whether the additional LR5 features offer enough extra value over the already capable LR4.

1. WasteID™ Is One of the Biggest LR5 Differences

One of the clearest differences between Litter-Robot 4 and Litter-Robot 5 is WasteID™.

WasteID™ is exclusive to Litter-Robot 5 and is designed to distinguish between urine and solid waste. The unit can use that information to adjust cycle behaviour while providing more detailed litter-box activity information through the Whisker app.

Litter-Robot 4 already monitors usage, litter levels and waste drawer fullness, but it does not include WasteID™.

For owners who value more detailed litter-box activity data, this is one of the most notable additions in LR5.

2. LR5 Provides More Detailed Activity Insights

Litter-Robot 4 already provides useful monitoring features.

Its SmartScale™ and sensor system can help owners follow their cat’s weight and litter-box activity through the Whisker app, making it easier to notice changes in routine over time.

Litter-Robot 5 expands on this concept by combining weight information, litter-box visits, daily habits and WasteID™ data within the connected Whisker ecosystem.

These insights can help owners stay more aware of changes in their cat’s routine, although they should not be treated as a substitute for professional veterinary advice.

3. Litter-Robot 5 Has a Larger Waste Drawer

Another practical difference is the redesigned LR5 waste drawer.

The larger drawer provides greater capacity and improved waste distribution. Cat Evolution states that it may allow up to seven days between emptying in a two-cat household, although actual frequency will vary according to usage and the number of cats.

For busy households or homes with several cats, the additional capacity may reduce how frequently the waste drawer requires attention.

Litter-Robot 4 remains designed for convenient multi-cat use, but LR5 offers an advantage for buyers who place a higher priority on waste capacity.

4. LR5 Supports Larger Multi-Cat Households

Litter-Robot 4 is designed for households with up to four cats.

Litter-Robot 5 extends that positioning to households with up to five cats.

For larger multi-cat homes, that additional capacity may be meaningful. For one- or two-cat households, however, the difference may be less important because both models already provide automatic cleaning and connected monitoring.

5. LR5 Introduces an Enhanced LCD Display

Litter-Robot 4 uses an on-unit control panel with buttons and an LED display.

Litter-Robot 5 introduces a brighter LCD display designed to provide clearer status information, guided setup and easier access to controls directly from the unit.

For owners who regularly manage their litter box from the device itself rather than relying primarily on the app, the updated interface may make everyday operation more intuitive.

6. Both Models Offer Whisker App Connectivity

You do not need to choose LR5 simply to get smartphone connectivity.

Litter-Robot 4 already works with the Whisker app, allowing owners to monitor usage and access litter and waste information remotely.

Litter-Robot 5 continues that connected experience with features including real-time notifications, waste drawer monitoring, litter usage tracking, weight history, litter-box visit monitoring, remote settings and maintenance reminders.

The difference is therefore less about whether each model connects to the app and more about the additional information LR5 hardware can provide.

7. What About Size and Larger Cats?

Size is another factor worth considering when comparing LR4 and LR5.

Litter-Robot 5 is described as having an expanded interior with additional headroom and supports cats from approximately 1.4 kg to 13.6 kg.

Litter-Robot 4 has a 40 cm × 40 cm entryway, with an internal globe measuring approximately 38 to 43 cm high, 48 cm wide and 45 to 46 cm deep.

Because cats can vary significantly in body shape, posture and litter-box preferences, physical comfort should be considered separately from weight alone.

Rather than assuming one model is automatically better for every larger cat, owners should compare the dimensions and design against their individual cat’s needs.

Is Litter-Robot 5 Better Than Litter-Robot 4?

Litter-Robot 5 is the newer model and introduces several features that are not available on LR4, particularly WasteID™, greater waste drawer capacity, an enhanced on-unit interface and expanded activity monitoring.

That does not make Litter-Robot 4 obsolete.

LR4 already provides many of the features cat owners want from a premium automatic litter box, including automatic scooping, quiet cycling, odour management, weight monitoring, smart sensing and Whisker app connectivity.

The better choice depends on which features matter most for your cats, household and daily routine.

Who Might Prefer Litter-Robot 4?

Litter-Robot 4 may be a good fit for owners who want a proven automatic self-cleaning litter box with Whisker app connectivity, cat activity monitoring and quiet automatic cleaning, but do not specifically need WasteID™ or LR5’s additional monitoring features.

It is designed for households with up to four cats and already provides the core convenience and connected functionality many owners are looking for.

Cat Evolution’s LR4 product page also has an established base of customer reviews, giving prospective buyers the opportunity to read real-world experiences before deciding.

Shop Litter-Robot 4 in Australia

Who Might Prefer Litter-Robot 5?

Litter-Robot 5 may appeal more to owners who want the latest generation of Litter-Robot technology.

Its main additions include WasteID™, a larger waste drawer, expanded litter-box activity insights, an enhanced LCD display and support for households with up to five cats.

For owners who value increased capacity or want access to the newest monitoring features, LR5 may offer advantages worth considering.

Explore Litter-Robot 5 in Australia

Litter-Robot 4 vs 5: The Bottom Line

Both Litter-Robot 4 and Litter-Robot 5 automate the core litter-box cleaning process and provide connected monitoring through the Whisker ecosystem.

The biggest LR5 upgrades do not fundamentally change the self-cleaning concept. Instead, they focus on more detailed waste information, increased capacity and additional monitoring and interface features.

For owners who already find the LR4 feature set sufficient, Litter-Robot 4 remains a capable option within the current range.

Buyers who want the newest monitoring technology, greater waste capacity and the latest generation of Litter-Robot features may want to explore what LR5 adds before choosing.

For a broader comparison across the current range, visit our Litter-Robot Comparison Chart.