Best Bowling icon
Best Bowling LT icon
My Inventory – Home Tracker icon
+1

Tatsuhiko Koyama

For serious hobbyists and organized homeowners looking for detailed data logging, performance analytics, and inventory management.

4apps4.5(379)SportsShopping

Snapshot

Who is Tatsuhiko Koyama?

Providing utility-focused mobile tools and sports analytics for users seeking organized tracking and performance data.

Target audience

Serious hobbyistsOrganized homeowners looking for detailed data loggingPerformance analytics

Active nemesis

Lanetalk AB

Other rivals

Portfolio

Free 2
4
apps
Shopping2
Sports2

Last updated

Best Bowling LT

v4.5.2

1.1y ago

Maintenance

Publisher DNA

What defines Tatsuhiko Koyama?

Publisher DNA

Primary focus

Niche utility and sports tracking tools

Scale

indie

Target audience

Serious hobbyists and organized homeowners looking for detailed data logging, performance analytics, and inventory management.

Origin

Founded by a former freelance IT engineer with over a decade of experience who sought to bring Japanese-developed services to a global audience.

Signature Patterns

  • Focus on data-heavy tracking and frame-by-frame analytics features
  • Utilization of paid-upfront pricing models instead of ad-supported freemium
  • High degree of personalization through extensive icon libraries and custom organization
  • Targeting specific, high-intent hobbyist and domestic niches
Maintenance

Portfolio momentum

The publisher has released 0 updates across its 2 active apps in the last 6 months, indicating a stable maintenance phase for the existing portfolio.

Active apps 2

Company profile

medium confidence
Headquarters
Yokohama, Japan
Employees
1-10

Portfolio

What does Tatsuhiko Koyama ship?

Apps

4 apps analysed

Best Bowling icon
Best Bowling

Very popular for my-bowler! It's a tool to manage your bowling score.

4.5(136)

Multi-bowler management expands the user base per install

  • Tracking multiple bowlers and league statistics provides deep insights for competitive players
  • Database synchronization errors and app freezes force frequent uninstalls and reinstalls

Analysis in progress

My Inventory – Home Tracker icon
My Inventory – Home Tracker

Easily track and manage your household items with this smart inventory tool.

4.3(71)

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

Based on 1 of 4 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States1 / 1

Asia-Pacific (1)

  • Japan1 / 1

Core markets (1/1 apps)

JapanUnited States

User Sentiment

How do users feel about their apps?

0

Positive apps

1

Neutral / mixed

0

Negative apps

45/100

Avg sentiment score

Rivals

Who does Tatsuhiko Koyama compete with?

The rivals identified

Nemeses(1)

Lanetalk AB

known forLanetalk Bowling

1 app3.6Sports

With over 3,800 reviews and a high-frequency release cadence, Lanetalk dominates the market by integrating directly with bowling center scoring systems.

Contenders(1)

Siu Yuen Ho

known forMy Bowling Scoreboard

1 app4.5Sports

A long-standing, stable alternative that serves as a direct manual-entry competitor with a significant established user base.

New entrants(1)

Sho Nakazato

known forBosc: Bowling Score Keeper App

2 apps4.6Sports

High-velocity development with 24 releases in the last six months signals an aggressive push to capture market share.

The Analyst's Read

The bottom line on Tatsuhiko Koyama

Bottom line

Wasabi Applications is a disciplined indie developer focused on high-intent utility niches with a premium pricing strategy. Their high weighted rating signals strong product-market fit among power users who value detailed data logging over casual UX.

Frequently asked questions

How many apps does Tatsuhiko Koyama publish?
Tatsuhiko Koyama has 4 apps tracked by Marlvel, primarily in the Shopping category.
What kind of apps does Tatsuhiko Koyama make?
Tatsuhiko Koyama's portfolio is concentrated in Shopping and Sports, with an average rating of 4.5/5 across rated apps.
What is Tatsuhiko Koyama's top app?
By review volume across the portfolio, Best Bowling LT is Tatsuhiko Koyama's best-known app tracked by Marlvel.
In how many countries are Tatsuhiko Koyama's apps available?
Marlvel has tracked Tatsuhiko Koyama's apps across 2 countries.

What fed this analysis

Apps analyzed:
2
With full intel:
0
With overview:
2
Website scraped:
yes
Social presence:
yes

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Tatsuhiko Koyama, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Tatsuhiko Koyama intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/tatsuhiko-koyama

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Data licensed under CC-BY-NC 4.0