About Us · Why we build Marujigi

We build Marujigi with one wish:
to stay by our parents' side

Maru

Why we built Marujigi

I am in my fifties, and my mother, now past eighty, lives far away in the countryside.

Our parents' generation built the foundation for the lives we live today through a lifetime of devotion and hardship. But the world is changing too fast. Even handling a smartphone has become a daily wall for our parents, while children in their 30s to 50s, holding on in demanding jobs and raising their own kids, cannot properly look after the parents who spent a lifetime looking after us. That is the reality today.

Amid all this, heartbreaking stories come from not far away. An elderly person who passed away alone, someone who lost a lifetime of savings to voice phishing, a person with dementia who lost their way and wandered the streets. These weren't news items; they were the stories of our neighbors.

Our social safety net still lacks the people and the funding to embrace them all.

Fortunately, we have entered an age where artificial intelligence can fill a little of that gap. It isn't perfect, but it can let our parents easily ask about whatever they're wondering, remind them of medication times that are easy to forget, detect suspicious text messages early, and let their children know whether today was an ordinary, safe day.

So we built it. An app where parents enjoy the benefits of technology without difficulty, and children, even from far away, know how their parents' day went, worry a little less and care a little more. An app that puts family before technology. That is Marujigi.

Maru and Marujigi

Maru

Maru the turtle

Maru's look is based on my child at four years old, walking to kindergarten with a little backpack. That image, so adorable it stayed with me for years, we placed in a turtle, a symbol of longevity and steadiness. Wearing a flat cap and horn-rimmed glasses, clever Maru is a diligent, kind-hearted child who stays by our parents' side for a long, long time.

The name "Marujigi"

In a Korean country house, the place where the elderly sat alone was always the maru, the wooden porch. Picture parents sitting on that porch, lost in thought, as the grandchildren gather around to chatter. The one who keeps watch over that maru is the marujigi, "keeper of the maru."

Three things at the heart of Marujigi

One

Seniors first, thoroughly

Every screen in Marujigi starts with one question: "Could my mother use this on her own?"

  • Voice commandsEven those who find typing hard need only say a word. Say "Hospital at 3 tomorrow" and the schedule is saved; when the time comes, Maru reminds them by voice.
  • Large text and intuitive iconsLarge text and large buttons, with icons you can read at a glance, so no one has to hunt through menus.
  • A friendly way of talkingInstead of stiff notices, Maru speaks the way grandchildren chat in everyday life.
Two

An app the whole family uses, and the road ahead

Not for parents alone; an app the whole family uses together.

  • Your parents' day at a glanceSchedules, medication and where they are right now, right in the family app.
  • An alert the moment something's wrongIf there's no activity for a long time or a suspicious text arrives, children are notified immediately.
  • A shared family effortSiblings connect together, exchange greetings by message, and share the work of looking after their parents.

Going forward, we will read changes in parents' health and mood more attentively and alert families sooner, and make the location alerts that prevent getting lost even more dependable. New updates will be announced on this page first.

Three

An app that helps society

Lonely deaths of seniors living alone, losses to voice phishing, people with dementia who lose their way: these are not one family's problem but everyone's.

  • Safe, even aloneSeniors can use it on their own, with no family or with family far away; in danger, their children or an emergency contact are notified automatically.
  • Alongside care workersWe are preparing an institutional service so local governments, nursing homes and welfare centers can look after many seniors together.
  • Technology that narrows the gapTechnology cannot replace care, but we want it to narrow the gaps in care, even a little.

Company information

Company
Marujigi Inc. (주식회사 마루지기)
CEO
Byung-yong Moon
Founded
May 14, 2026
Business
Development and operation of "Marujigi", an AI voice assistant app for seniors
Address
404-A02, 4F, The First Tower, 602 Dongtan-giheung-ro, Dongtan-gu, Hwaseong-si, Gyeonggi-do, Republic of Korea
Business registration no.
242-81-04138
E-commerce business report
2026-Hwaseong Dongtan-3546

Intellectual property and certifications

The Maru character and the Marujigi service are protected by copyright and trademark. Only completed registrations are labeled "Registered"; applications are shown as pending.

Maru character copyright registration
Copyright registrationRegistered

Character "Maru, the character of a senior-care app"

Registration no.
C-2026-029924
Registered
Jun 17, 2026
Authority
Korea Copyright Commission
Korea Copyright Commission registry ↗
Trademark registration certificate (public copy)
Trademark registrationRegistered

Maru character device mark · Class 38 (internet broadcasting and 7 other services)

Registration no.
40-2595931
Filed · Registered
Filed Jun 30, 2026 · Registered Sep 17, 2026
Authority
Korean Intellectual Property Office
Verify on KIPRIS ↗
Trademark applicationPending · under examination

Maru character device mark · Class 42 (AI services, software development, etc.)

Application no.
40-2026-0131747
Filed
Jun 30, 2026
Authority
Korean Intellectual Property Office
Verify on KIPRIS ↗
PatentPending

Patent application in progress

Application no.
Posted once assigned
Authority
Korean Intellectual Property Office
Venture business certificationIn progress

Venture certification application in progress

Certificate
Posted once issued
Authority
Venture certification authority

※ The certificate image shown is a public copy with sensitive details (corporate registration number, filing numbers) masked and watermarked.

News

Marujigi App Officially Launched
Launch

Marujigi App Officially Launched

Marujigi, the AI voice assistant that stays by your parents' side, has officially launched. Start free right away, and use it together with family or on your own.

Maru Trademark Registered and Filed
Registration · Filing

Maru Trademark Registered and Filed

The trademark for Maru, our turtle character, has been registered with the Korean Intellectual Property Office (Class 38, internet broadcasting and related services; Reg. No. 40-2595931). The application for app and AI services (Class 42) has been filed and is under examination (No. 40-2026-0131747).

Maru Character Copyright Registered
Registration

Maru Character Copyright Registered

"Maru, the character of a senior-care app" has been registered as a copyrighted work with the Korea Copyright Commission (Reg. No. C-2026-029924). Maru is Marujigi's own character, protected by both copyright and trademark.

Institutional adoption · Partnership inquiries

For local governments,
nursing homes and welfare centers

We'll guide you through group adoption for 30 or more seniors, the caregiver admin portal and facility dashboards.