Start with what you want to do with the companion. Would you enjoy a small physical reaction in the moment, or do you want to follow a robot’s simulated emotional development over time? That is a more useful starting point than declaring one product the better robot.
This source-based comparison covers the manufacturer’s US Gray Mirumi and Casio Moflin PE-M10, using documents checked on October 7, 2026. We have not handled the products or compared their sound, feel, battery endurance, or long-term behavior.
Disclosure: This article is published by mirumirobot.com, a store that sells Mirumi. The comparison uses the manufacturer sources linked below.
Compare the interaction you would actually use
Mirumi’s manufacturer says it reacts to sounds and voices but has neither AI nor language recognition. Its FAQ also describes head-petting interactions and advises allowing time for a response. Speaking to it should therefore be understood as offering sound, not issuing a command it understands. Mirumi FAQ.
Casio describes Moflin’s emotional expressions as AI simulations. They are not actual human emotions. Its MofLife app lets you inspect its displayed emotional state and past interaction records; the app also offers volume adjustment and software updates. Casio’s Moflin description.
Our preference-based interpretation: put Mirumi on your shortlist if watching a physical reaction is the part you want. Put Moflin on your shortlist if following the simulated state and interaction history is a central attraction. Neither preference establishes which product will feel more engaging to you after a month.
Separate the robot from the app workflow
Casio’s PE-M10 manual requires Bluetooth pairing and a CASIO ID login to use MofLife. That is an app-use requirement; it is not evidence that every basic interaction with Moflin requires a phone or account. Official pairing guide.
Before choosing Moflin for its app features, check the current app listing against your phone and decide whether the sign-in requirement suits you. If you only want the physical interaction, ask about that workflow separately rather than assuming the app setup describes all use.
Mirumi’s lack of AI does not answer every connectivity or privacy question. This comparison has not audited either product’s data handling, and it should not be used as a privacy ranking.
Compare the space and charging arrangement
The US Gray Mirumi listing specifies approximately 100 mm wide × 110 mm deep × 140 mm high, with the arms included in depth, and about 155 g. The PE-M10 manual specifies approximately 130 mm wide × 180 mm deep × 90 mm high and about 260 g for Moflin’s body. The Moflin dimensions here are reordered into the same width–depth–height sequence for clarity. Mirumi specifications; PE-M10 specifications.
For charging, Mirumi’s US listing specifies using the included USB-A to USB-C cable with a USB-A adapter rated at 5 V, 1 A. Moflin’s manual lists its Moflin Bed charger and supplied specified AC adapter. Think about where each charging arrangement would live, not just the size of the robot itself. Mirumi charging specification; Moflin charging accessories.
Make the remaining decision with a demonstration
Before buying, choose the one unanswered question that matters most to you:
- If sound is decisive, request an audio-on demonstration of the exact model
- If feel matters, look for a way to handle the product rather than inferring texture from photographs
- If charging frequency matters, seek a real use log with conditions rather than treating nominal specifications as a head-to-head endurance test
Choose by the interaction you want to repeat and the setup you are willing to keep. This comparison narrows those choices; it does not supply a tested winner or a promise of emotional or health benefits.