Hiromasa Nakatani

Known for

Wisper Diary – AI Chat Journal

1app

Active nemesis

EMMO

Other rivals

Publisher DNA

AI intelligence is not yet available for Hiromasa Nakatani. 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 Hiromasa Nakatani's strongest niche.

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Portfolio

Apps

1 app analysed

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Wisper Diary – AI Chat Journal

0.0

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AI-driven conversational feedback loop differentiates the app from static journaling tools
Lack of cloud sync or data portability limits long-term user trust

Tightly focused on 2 markets (Japan, United States).

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

Americas (1)

United States

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 Hiromasa Nakatani publish?

Hiromasa Nakatani has 1 app tracked by Marlvel, primarily in the Lifestyle category.

What kind of apps does Hiromasa Nakatani make?

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

Last updated

Wisper Diary – AI Chat Journal

v1.0.1

4mo ago

Asia-Pacific (1)

Japan1 / 1

Core markets (1/1 apps)

JapanUnited States

EMMO dominates the lifestyle journaling category with a massive user base and a focus on mood-based, minimalist expression that directly competes with Wisper Diary’s simple, thought-based journaling format.

Contenders(2)

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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This app targets users who value the physical legacy of their digital entries through unique export and collection features.

婷婷乔

known forShine - Timeline diary

3 apps

Same space(4)

Beijing Haixin Intelligence Technology Co.

known for时光之语

1 app5.0Lifestyle

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This app uses AI to conduct interviews with the user, serving as a structured alternative to Wisper's free-form chat.

Jason Liang

known forMyMemoir AI

1 app5.0Lifestyle

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Jun Haeyun

known forChat with Me: Selfcare Journal

1 appLifestyle

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This app provides a private, chat-based interface for self-reflection, directly mirroring Wisper's core interaction model.

Onda Labs

known forOndo: AI Journal

1 app5.0Lifestyle

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New entrants(2)

Amon Studio

known forLore: Every Chat Hides a Story

1 app0.0Lifestyle

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Lore leverages existing messaging habits by integrating with WhatsApp to generate AI narratives from daily conversations.

Ide Koshin

known forおうち新聞

1 app0.0Lifestyle

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What is Hiromasa Nakatani's top app?

Based on user sentiment and following across the portfolio, Wisper Diary – AI Chat Journal stands out as Hiromasa Nakatani's flagship app tracked by Marlvel.

In how many countries are Hiromasa Nakatani's apps available?

Marlvel has tracked Hiromasa Nakatani's apps across 2 countries.

Shine competes by providing data-driven insights like story heatmaps and voice-to-text capabilities for a more analytical journaling experience.

This app focuses on the intersection of AI and personal history, mirroring Wisper's goal of AI-assisted reflection.

Ondo is a direct peer, utilizing conversational AI to facilitate journaling and memory recognition.

This newcomer introduces a family-oriented newspaper format, shifting the focus from individual journaling to shared family storytelling.

Snapshot

Publisher DNA

Top niches they play in

Portfolio

Apps

Americas (1)

User sentiment

Rivals

The rivals identified

Nemeses(1)

So what?

Frequently asked questions

Asia-Pacific (1)

Core markets (1/1 apps)

Contenders(2)

Same space(4)

New entrants(2)