Vibration, timed to motion
The ear-hook uses vibration to provide a physical cue associated with real movement, timed to what you see through the headset.
TempusLibra · Target form-factor conceptMellonSpes
Making the world
sweeter and warmer.
We bring research and technology into everyday life.
Our first project, TempusLibra, explores a closer connection
between motion on screen and the body’s senses.
OUR FIRST PROJECTTempusLibra · Wearable motion cueing
OUR FIRST PROJECT / TEMPUSLIBRA
TempusLibra.
In 20 seconds.
Our first project: a personalized ear-hook wearable being developed to deliver vibration cues timed to motion on screen.
01 / THE EXPERIENCE
When the senses disagree,
we start with the body.
When the screen moves fast but the body stays still, discomfort can interrupt immersion. TempusLibra is being developed to deliver vibration cues through an ear-hook in time with the motion on screen.
A setting that fits you
You rate each session. AI uses those scores to recommend your next setting, while you stay in control of the intensity.
Made to fit your setup
We are developing a lightweight ear-hook designed to work alongside existing headsets and simulators.
BUILT AROUND THE OPERATOR
Different people.
Different settings.
The right intensity for one person may not suit another. TempusLibra records each user's experience and uses that feedback to inform the next session's setting.
Our focus is a physical cue delivered to the wearer through vibration. The ear-hook is designed to work alongside a headset, with the goal of supporting the body’s sense of motion during the experience.
Hardware and software, developed together. Core firmware, AI and app development stay in-house.DEVICE + APP + FEEDBACK
Worn on the ear.
Tuned in the app.
Informed by you.
Rate a session by voice in the app and review trends on the dashboard. Your scores provide the basis for the AI recommendation. You choose the setting to use.
CURRENT STAGE / SEPTEMBER 2026
Early testing complete.
Preparing for wider validation.
We have completed an internal test and a single-participant field test. The ear-hook, app and dashboard form our development stack; the product images show the target form factor. Our next milestones are manufacturing design, certification, independent replication and the first paid XR pilot or direct sales.
02 / EARLY EVIDENCE
Early signals of progress.
Field validation comes next.
We conducted an internal test and a field test with a Korean Army officer, both against a dummy device. Further validation will examine the results across a wider range of conditions.
Lower overall discomfort
Internal test result versus a dummy device
Lower overall discomfort
June 2026 · Quest 3 drone task
Single-participant result versus a dummy device
Disorientation 69%
Nausea 64% · Eye strain 59%
Nausea 64% · Eye strain 59%
2027H1
Korean Army field validation
We are preparing for field validation approved by the Korean Army Chief of Staff. The planned H1 2027 trial is unpaid.
Initial testingField validation
Next steps also include independent replication and the first paid XR pilot or direct sales.
Based on the September 2026 presentation. These are preliminary internal results, not evidence of clinical efficacy. Sample sizes and test conditions differ, so the two results cannot be directly compared or generalized. The June 2026 Army test and planned 2027 validation are unpaid evaluation activities, not sales or procurement commitments. Product images depict the target form-factor concept.
03 / WHERE WE START
Starting with drone training.
Built for a world in motion.
We start with drone training, simulators and XR. Our broader direction includes robotics: exploring sensory feedback for people who operate machines through a screen.
01
Drone operations
Field validation of sensory cues that connect the operator with motion in the flight view
DEFENSE02
Simulators
Sensory cues and personalized settings designed to integrate with existing training systems
SIMULATION03
Gaming & XR
A wearable for headset users, with OEM modules planned for manufacturers
IMMERSIVE MEDIA04
Robotics & teleoperation
A future application to explore: motion cues for people operating robots through a screen, extending the same focus on the operator’s sensory experience.
FUTURE DIRECTIONOne seed of hope.
A shared future.
Each dot holds a life and a story. Together, they form a mosaic melon slice. The orange seed that remains within is the hope that carries us into the future, making the world sweeter and warmer. Melon Heart: our true story, told through the MellonSpes logo.
04 / THE MELLONSPES TEAM
Deep research.
Everyday experiences.
MellonSpes is a technology startup team preparing for incorporation in October 2026. We bring research and engineering into everyday life, with the aim of making the world sweeter and warmer. TempusLibra is our first project. We develop the firmware, AI, app and core hardware in-house.
Simon (Sunghwan) Chang ↗
Ph.D. in Bio and Brain Engineering
B.S. and M.S. in Mechanical Engineering
18 years of R&D at KIMM
Firmware · AI · App · Testing
Kim
B.S. in electrical and electronic engineering
20+ years in hardware and software development
PCB design · Circuit implementation
RESEARCH FOUNDATION
Built on Korea Institute of Machinery & Materials (KIMM) technology
Patent applications: KR 10-2025-0120428 and PCT
LET’S BUILD THE NEXT SESSION
Two pilot partners.
A shared next step.
We are seeking a headset or simulator maker and a defense integrator.
Let’s define the integration work and the evaluation together.
Investors and robotics teams are also welcome to get in touch. Incorporation is planned for October 2026.