Yuga Matsumi

Known for

One-Line Diary – Mood Log

1app0.0Lifestyle

Active nemesis

EMMO

Other rivals

Publisher DNA

AI intelligence is not yet available for Yuga Matsumi. The portfolio data below is up to date.

Top niches they play in

Journaling Note Taking1 app

Explore the Journaling Note Taking niche

See every app competing in Yuga Matsumi's strongest niche.

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Portfolio

Apps

1 app analysed

Sort by

One-Line Diary – Mood Log

0.0

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Minimalist UI design reduces cognitive friction for daily journaling habits
Absence of cloud-sync or account-based backup risks user data loss

Tightly focused on 5 markets (Brazil, Japan, Mexico, South Korea, United States).

Based on 1 of 1 app with localized market data · last scanned Jul 2026.

Americas (3)

Brazil

User sentiment

User-sentiment analysis coming soon.

Rivals

The rivals identified

Nemeses(1)

EMMO

known forEMMO - 日记与笔记

1 app

So what?

Strategic outlook coming soon.

Frequently asked questions

How many apps does Yuga Matsumi publish?

Yuga Matsumi has 1 app tracked by Marlvel, primarily in the Lifestyle category.

What kind of apps does Yuga Matsumi make?

Yuga Matsumi's portfolio is concentrated in Lifestyle, with an average rating of 0.0/5 across rated apps.

Last updated

One-Line Diary – Mood Log

v1.0.4

6mo ago

Asia-Pacific (2)

Japan1 / 1
South Korea1 / 1

Core markets (1/1 apps)

BrazilJapanMexicoSouth KoreaUnited States

EMMO is the primary nemesis due to its massive user base and established dominance in the mood-tracking and minimalist journaling space, directly overlapping with One-Line Diary's core value proposition.

Contenders(3)

Biograph

known forBiograph App

1 app5.0Lifestyle

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Biograph competes by expanding the definition of a diary to include collaborative storytelling and voice-based inputs.

Shanghai Ningguang Information Technology Co.

known for团纸日记-把生活写成一本书

1 app5.0Lifestyle

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婷婷乔

known forAGSCalendar

3 apps

Same space(3)

Beijing Haixin Intelligence Technology Co.

known for时光之语

1 app5.0Lifestyle

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This app competes by using AI to automate the narrative generation process, shifting from manual entry to guided interviewing.

Onda Labs

known forOndo: AI Journal

1 app5.0Lifestyle

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Phoenix & Aura

known forShadow OS: The Decision App

1 appLifestyle

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Shadow OS occupies the same minimalist lifestyle category, focusing on private, streamlined personal logging.

New entrants(2)

Amon Studio

known forLore: Every Chat Hides a Story

1 app0.0Lifestyle

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Lore is a newcomer that disrupts the diary space by repurposing existing chat data into narrative journals.

jiahao zhang

known forFlicker · letters at night

1 app0.0Lifestyle

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What is Yuga Matsumi's top app?

Based on user sentiment and following across the portfolio, One-Line Diary – Mood Log stands out as Yuga Matsumi's flagship app tracked by Marlvel.

In how many countries are Yuga Matsumi's apps available?

Marlvel has tracked Yuga Matsumi's apps across 5 countries.

It competes by positioning journaling as a long-term archival process, appealing to users who want to turn digital logs into physical books.

AGSCalendar overlaps with the target's calendar-view functionality, focusing on time-based organization of daily life.

Ondo competes by integrating AI to transform simple diary entries into interactive, conversational experiences.

Flicker introduces a unique, deterministic engine for journaling that focuses on the emotional weight of 'letters' rather than logs.

Snapshot

Publisher DNA

Top niches they play in

Portfolio

Apps

Americas (3)

User sentiment

Rivals

The rivals identified

Nemeses(1)

So what?

Frequently asked questions

Asia-Pacific (2)

Core markets (1/1 apps)

Contenders(3)

Same space(3)

New entrants(2)