Memo
Sunday's Memo is a mobile home robot built around the company's ACT-1 robotics model and Skill Capture Glove data pipeline. Official materials position it as a practical household helper for repetitive chores such as clearing tables, loading dishwashers, folding laundry, and making coffee, while Sunday says the system is being trained on large volumes of real-home task data rather than tightly staged demos. The company is currently preparing a limited Founding Family beta for late 2026 rather than general retail availability.
Sunday has not announced retail pricing. As of 2026-04-06, the company is taking applications for a limited Founding Family beta and says deployment will begin in fall / late 2026.
Height
Not officially disclosed
Weight
Not officially disclosed
Battery
Not officially disclosed
Speed
Not officially disclosed
Technical Specifications
Height
Not officially disclosed
Weight
Not officially disclosed
Dimensions
Not officially disclosed
Battery Life
Not officially disclosed
Charging Time
Not officially disclosed
Max Speed
Not officially disclosed
Capabilities
7Ecosystem Compatibility
- Sunday app
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About the Memo
The Memo is a Home Assistants robot built by Sunday. Sunday's Memo is a mobile home robot built around the company's ACT-1 robotics model and Skill Capture Glove data pipeline. Official materials position it as a practical household helper for repetitive chores such as clearing tables, loading dishwashers, folding laundry, and making coffee, while Sunday says the system is being trained on large volumes of real-home task data rather than tightly staged demos. The company is currently preparing a limited Founding Family beta for late 2026 rather than general retail availability.
Pricing has not been publicly disclosed — typical for robots still in development. See all Sunday robots on the Sunday page.
Spec Breakdown
Detailed specifications for the Memo
Height
Not officially disclosedAt Not officially disclosed, the Memo is sized for its intended operating environment and use cases.
Weight
Not officially disclosedWeighing Not officially disclosed, the Memo balances structural integrity with portability and maneuverability.
Dimensions
Not officially disclosedThe overall dimensions of Not officially disclosed define the robot's physical footprint and determine what spaces it can navigate and what clearances it requires for operation.
Battery Life
Not officially disclosedWith a battery life of Not officially disclosed, the Memo can operate for sustained periods before requiring a recharge. Battery life is measured under typical operating conditions and may vary based on workload intensity and environmental factors.
Charging Time
Not officially disclosedA charging time of Not officially disclosed means the ratio of operation to downtime is an important consideration for applications requiring near-continuous availability. Some deployments use multiple robots in rotation to maintain uninterrupted service.
Maximum Speed
Not officially disclosedA top speed of Not officially disclosed is calibrated for the robot's primary operating environment and safety requirements.
The Memo uses Sunday ACT-1 robot foundation model trained with the company's Skill Capture Glove / Skill Transform data pipeline as its intelligence backbone. This AI platform powers the robot's decision-making, perception processing, and autonomous behavior. The sophistication of the AI stack directly impacts how well the robot handles unexpected situations and adapts to new environments.
Memo Use Cases & Applications
Home assistant robots combine the functionality of a smart speaker, tablet, security camera, and telepresence device into a mobile platform that follows you or patrols your home. They represent the next evolution of smart home interaction.
Capabilities That Enable Real-World Use
The Memo offers 7 distinct capabilities, each contributing to the robot's practical utility.
These capabilities work together with the robot's onboard sensors and Sunday ACT-1 robot foundation model trained with the company's Skill Capture Glove / Skill Transform data pipeline AI platform to deliver practical, real-world performance.
Ecosystem Integration
The Memo integrates with the following platforms and ecosystems, extending its utility beyond standalone operation.
This ecosystem compatibility enables the Memo to work as part of a broader automation setup rather than operating in isolation.
Memo Capabilities
7
Capabilities
0
Sensor Types
AI
Sunday ACT-1 robot foundatio…
Who Should Consider the Memo?
Target Audience
Home assistant robots target households looking for a mobile smart home hub that can move between rooms, provide video communication, monitor the home, and assist with daily tasks. Early adopters and smart home enthusiasts are the primary market.
Key Considerations
Mobility range, smart home platform integration, camera quality for video calls and monitoring, microphone/speaker quality for voice interaction, and the breadth of assistive capabilities are key. Consider privacy features (physical camera shutters, mute buttons) and whether the robot can navigate your home layout reliably.
Pricing
Availability
DevelopmentThe Memo is currently in active development. Follow Sunday for updates on when the robot will become available for purchase or pre-order.
Memo: Strengths & Trade-offs
Engineering compromises and where this home assistants robot excels
What the Memo does well
Broad capability set
With 7 distinct capabilities, the Memo is designed as a versatile platform rather than a single-task device. This breadth means the robot can handle varied scenarios and workflows, reducing the need for multiple specialized robots and increasing its utility across different situations.
What to consider carefully
Undisclosed pricing
Sunday has not published a public price for the Memo. While common for enterprise-class robotics, the absence of transparent pricing can complicate budgeting and comparison shopping. Prospective buyers will need to engage directly with the manufacturer for quotes, which may vary by configuration and volume.
Currently in development
The Memo is not yet available as a finished, shipping product. Specifications may change before commercial release, and timelines for availability are subject to revision. Early adopters should account for this uncertainty in their planning.
Note: This strengths and trade-offs assessment is based on the Memo's documented specifications as tracked in the ui44 database. Real-world performance depends on deployment conditions, firmware maturity, and environmental factors. For the most current information, check the Sunday manufacturer page or visit the official product page. Use the comparison tool to evaluate these trade-offs against competing robots in the same category.
How Home Assistants Robot Technology Works
Understanding the engineering behind this category
Home assistant robots combine mobility, intelligence, and physical manipulation to perform tasks that stationary smart devices simply cannot. While a smart speaker can tell you the weather, a home assistant robot can bring you an umbrella. This emerging category represents the convergence of multiple robotic technologies — navigation, manipulation, AI, and human-robot interaction — into a single household platform.
Navigation & Mobility
Home assistant robots must navigate the complex, cluttered, and constantly changing environment of a lived-in home. They use LiDAR, cameras, and depth sensors to build and continuously update maps of the home interior, handling furniture rearrangements, opened or closed doors, and transient obstacles like shoes and toys. Path planning must account for the robot's size (including any carried objects), doorway widths, carpet transitions, and areas where humans are present. Advanced systems create semantic maps that understand room functions — knowing the kitchen from the bedroom enables context-appropriate behavior like adjusting movement speed or interaction style.
The Role of AI
AI in home assistant robots must bridge the gap between high-level human instructions and low-level physical actions. When asked to bring a glass of water, the robot must understand the request, plan the task sequence (navigate to kitchen, find a glass, operate the tap, carry without spilling), and execute each step while handling unexpected situations. Foundation models and vision-language models are increasingly central to this task comprehension capability. The AI must also maintain context across interactions — remembering where items are usually kept, learning household routines, and anticipating needs based on time of day and activity patterns.
Sensor Fusion & Perception
Home assistant robots require comprehensive perception that combines environmental mapping with object-level understanding. Cameras and depth sensors identify objects and their positions. Force sensors in hands and arms enable safe grasping and manipulation without crushing or dropping items. Proximity sensors prevent collisions during navigation, especially when carrying objects that extend the robot's footprint. Audio processing detects and localizes voice commands from anywhere in the home. Some robots include sensors for detecting spills, open doors, or unusual sounds that might indicate a problem requiring attention.
Power & Battery Management
Home assistant robots face challenging power requirements due to the combination of mobility, computation, and manipulation. Battery technology limits operational time to several hours before recharging is needed. Smart power management prioritizes tasks by urgency and groups actions by location to minimize unnecessary movement. Autonomous docking and charging ensure availability when needed. Some designs use lighter-weight arms and efficient actuators to reduce power consumption during manipulation tasks. The ability to plan efficient routes through the home — minimizing backtracking and unnecessary movement — directly impacts how much useful work the robot can accomplish per charge cycle.
Safety by Design
Operating a robot with arms and hands in a home with people requires extensive safety engineering. Force-limiting actuators prevent the robot from exerting dangerous grip or impact forces. Speed reduction in the presence of detected humans protects against collision injuries. Object-drop prevention systems ensure the robot does not release carried items unexpectedly. Hot-liquid and sharp-object handling requires specialized grip and stability control. Emergency stop mechanisms allow any household member to immediately halt the robot. The system must fail safely — if power is lost while carrying an object, the gripper should default to a secure hold rather than releasing.
What's Next for Home Assistants Robots
Home assistant robots are at an early but rapidly advancing stage. The convergence of foundation models (for understanding tasks), improved dexterous manipulation (for executing them), and decreasing hardware costs (for making them accessible) is accelerating development. Near-term advances will likely focus on specific task competency — robots that excel at a few useful tasks rather than attempting to do everything. As these capabilities mature and costs decrease, the scope of home assistant robots will gradually expand toward the vision of a truly general-purpose household helper.
The Memo by Sunday incorporates many of these technology pillars. For a detailed look at the specific sensors and components used in the Memo, see the sensor analysis and connectivity sections above, or browse the complete components glossary for explanations of every technology used across the robotics industry.
Memo in the Home Assistants Market
How this robot compares in the home assistants landscape
Sunday has not publicly disclosed pricing for the Memo, which is typical for enterprise-focused robotics platforms that offer customized solutions and direct-sales relationships.
As a robot still in development, the Memo represents Sunday's vision for where home assistants robotics is heading. Specifications may evolve before commercial release, and early performance demonstrations should be evaluated with this context in mind.
Head-to-Head Comparisons
Side-by-side specs, capability overlap analysis, and key differentiators.
For the full picture of Sunday's portfolio and market strategy, visit the Sunday manufacturer page.
Owning the Memo: Setup, Maintenance & Tips
Practical guide from day one through years of ownership
Initial Setup
Home assistant robot setup involves physical placement, network configuration, environment mapping, and capability training. Place the charging dock in an accessible central location. Connect to your home Wi-Fi and smart home platform. Run the initial mapping session with all doors open and the home in its typical state. After mapping, configure room names, restricted areas, and any smart home integrations. For robots with manipulation capabilities, the setup may include teaching specific tasks by demonstration or configuring task parameters through the app. Expect to invest several sessions over the first week refining the robot's understanding of your home and preferences.
Ongoing Maintenance
Home assistant robots combine the maintenance needs of mobile platforms with those of manipulation systems. Weekly tasks include cleaning sensors, checking wheels and arm joints for debris, and verifying gripper functionality. Monthly maintenance should cover thorough sensor cleaning, software updates, and calibration checks. If the robot handles food or liquids, clean any contact surfaces after each use according to the manufacturer's hygiene guidelines. Monitor battery performance over time and report any significant degradation to the manufacturer.
Software Updates & Long-Term Support
Home assistant robot software updates are particularly impactful because they can add entirely new task capabilities. A robot that launches with five core tasks might gain additional abilities through software updates as the manufacturer develops and validates new skills. Keep automatic updates enabled and review update notes to discover new capabilities you might not have known were added. Major platform updates may also improve task execution quality for existing capabilities — making the robot more reliable and efficient at tasks it could already perform.
Maximizing Longevity
Home assistant robots represent a significant investment, and proper care maximizes that investment's return. Avoid exceeding payload limits when the robot carries objects. Keep the operating environment reasonably tidy to reduce navigation challenges. Maintain clean, unobstructed sensor surfaces for reliable operation. For robots with arms, avoid forcing joints beyond their range of motion. Address any unusual sounds or behaviors promptly — early intervention prevents small issues from becoming expensive repairs. Consider a manufacturer service plan for access to priority support and replacement parts.
For Sunday-specific support resources and documentation, visit the Sunday page on ui44 or check the manufacturer's official website at Sunday's product page.
Frequently Asked Questions
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How current is the Memo data on ui44?
Data Integrity
All Memo data on ui44 is verified against official Sunday sources, including spec sheets, product pages, and press releases. Last verified: 2026-04-06. Official source: Sunday product page. If you find outdated or incorrect information, please let us know — accuracy is our top priority.
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