CalCs - Calendar Complications icon
Calphace icon
Firstext icon
+4

Akihiro Usui

For apple Watch power users and iOS enthusiasts seeking high-density information layouts and distraction-free productivity tools.

7apps0.9(9) Multi-theme

Snapshot

Who is Akihiro Usui?

Providing minimalist utility and productivity tools designed to streamline specific workflows for Apple Watch and iOS power users.

Target audience

Apple Watch power usersIOS enthusiasts seeking high-density information layoutsDistraction-free productivity tools

Top rival

Bow Echo

Other rivals

Portfolio

Free 6
7
apps
Utilities3
Lifestyle2
Productivity1
Sports1

Last updated

CalCs - Calendar Complications

v1.98

5mo ago

Intense

Publisher DNA

What defines Akihiro Usui?

Publisher DNA

Primary focus

Minimalist utilities and watchOS complications

Scale

indie

Target audience

Apple Watch power users and iOS enthusiasts seeking high-density information layouts and distraction-free productivity tools.

Origin

Operates under the trade name Broad Connect System, a Tokyo-based entity involved in web production and app development.

Signature Patterns

  • Focus on minimalist, text-heavy user interfaces that prioritize density over visuals.
  • Specialization in watchOS-native complications and Smart Stack integration.
  • Monetization via a mix of paid-upfront and freemium models with IAP unlocks.
  • High-frequency maintenance and update cadence across the entire portfolio.
Intense

Portfolio momentum

Maintains an extremely high update frequency with 47 releases across 7 active apps in the last 6 months, indicating a rapid iteration and maintenance cycle.

Last release 5d agoActive apps 7

Company profile

medium confidence
Headquarters
Tokyo, Japan

Portfolio

What does Akihiro Usui ship?

Apps

7 apps analysed

  • Payment adjustment logic handles nuanced social expense splitting

Passcode lock function provides basic privacy

  • URL scheme support (kashikalist://) enables deep-linking

Rivals

Who does Akihiro Usui compete with?

The rivals identified

Nemeses(3)

Chengdu Xunmiao Technology Co.

known forWatch Complications Pro

1 app4.6Utilities

Both apps target Apple Watch users seeking custom complications for watch faces, creating direct competition for limited screen real estate.

Deeline Productions

known forMilitary Money: Pay & Pension

1 app4.8Lifestyle

This app competes by targeting the same demographic of users managing complex group-based financial distributions and long-term retirement forecasting.

UNITED

known forHousehold account book

1 app4.7Lifestyle

This app dominates the personal finance space by combining comprehensive expense tracking with high-engagement gamification, directly competing for the same user base looking to manage money and debts.

Contenders(10)

Bow Echo

known forPitip: Tip Calculator

1 app5.0Lifestyle

Pitip competes by offering specialized calculation tools that overlap with the bill-splitting functionality found in groupay.

Mehmet Bayram

known forParanı Çalıştır

1 app5.0Lifestyle

It competes by providing advanced financial calculators that target users looking for more than just basic expense division.

Timothy DeGraff

known forGovAid: SNAP

1 app5.0Lifestyle

This app competes for the user's attention in the finance and lifestyle category by providing complex, state-specific financial screening tools.

Hans-Juergen Richstein

known forGlimpsy: Smart Complications

1 app4.7Utilities

Both apps compete for limited Apple Watch complication slots, forcing users to choose between calendar-centric utility and battery-monitoring customization.

JP-Software

known forMy iExpenses Pro

1 app5.0Lifestyle

It serves as a direct alternative for users who need to manage specific transaction details like receipts and multi-currency debts.

Samir Alkhatib

known forWatch Faces & Complications

1 app4.1Utilities

Both apps compete for Apple Watch screen real estate by offering complications that users add to their watch faces. They target the same user base seeking to customize watch functionality and information display.

Shaowen Lu

known forAccountingBook - MyAsset LT V2

1 app5.0Lifestyle

This app competes by offering a more professional, multi-asset accounting framework for users who require advanced financial tracking beyond simple debt lists.

Unit Radius

known forinNumerate

1 app5.0Lifestyle

This app is a direct functional competitor as it bundles bill splitting and tip calculation alongside broader financial tools.

Xi'an Metaspeed Network Technology

known forLife Ledger - Account Tracker

1 app5.0Lifestyle

This app overlaps with Kashikalist by blending financial tracking with lifestyle-oriented gamification to encourage consistent habit formation.

婷婷 乔

known forBeeCount - Simple Ledger

1 app4.9Lifestyle

BeeCount targets the same productivity-focused demographic by leveraging AI to automate data entry, a significant efficiency upgrade over manual logging.

Same space(23)

Amit verma

known forCalendar Widget - Date Widgets

1 app4.4Utilities

Offers aesthetic home screen customization for users who want to decorate their device with calendar widgets.

Ashesh Shrestha

known forSmart Patro: Nepali Calendar

1 app4.6Utilities

Serves the Nepalese community by providing specific cultural events, festivals, and national data.

Christian Skorobogatow

known forUnplugged: Battery Widgets

1 app4.7Utilities

Monitors battery levels for users who want to track their phone status directly from their watch.

Do More Mobile

known forWeek Calendar - Smart Planner

1 app4.4Utilities

Targets power users needing complex schedule management across multiple services.

Exeersoft

known foriPersia Calendar تقویم ارز

1 app4.8Utilities

Offers specialized cultural calendar support for users requiring Jalali, Islamic, and Gregorian date conversion.

Filipe Freitas

known forAWC Faces

1 app4.6Utilities

Enables users to create custom watch faces by combining personal images and calendar elements.

FirstSeed

known forFirstSeed Calendar

1 app4.7Utilities

Focuses on deep integration with Apple ecosystem features for users seeking a native-feeling experience.

Fortyfour AB

known forVantage Calendar

1 app4.3Utilities

Provides a unique visual timeline for users who prefer stack-based organization over traditional calendar grids.

Hyperday MB

known forWatch Faces & Widget Gallery

1 app4.6Utilities

Provides a design-centric hub for users seeking to personalize their Apple Watch beyond standard complications.

Jatisari Inovasi Studio

known forWatch

2 apps4.9Utilities

Acts as the mandatory management layer for pairing and configuring Apple Watch devices.

K-Dimensional Holdings

known forCoast: Smart Fuel Cards

1 app4.5Lifestyle

Coast competes by managing group-based expenses specifically for fuel and business travel, overlapping with groupay's travel use case.

Keietsu Yasuhara

known forBatteryPhone

1 app3.6Utilities

Provides status monitoring for Apple Watch users who need to track phone battery levels via complications.

Kieron Kitson-Walters

known forUnsheet

1 app5.0Lifestyle

Unsheet provides a similar focus on local-only data storage for users who prioritize privacy in their financial record-keeping.

Marcel Mendes Filho

known forWatch Calendar - Monthly

1 app4.3Utilities

Offers deep customization for Apple Watch users who require specific calendar priorities and focus filters.

Metrobank , S.A.

known forMetroBank

1 app4.1Lifestyle

As a banking app, it competes by offering native payment and transfer features that replace the need for third-party split-bill apps.

minical

known forminical - Planner & Calendar

1 app4.8Utilities

Focuses on minimalist visual scheduling for users who prefer glanceable widget-based interaction.

MSORG DEVELOPERS

known forAsbdata

1 app5.0Lifestyle

This app competes by offering automated bill payment and wallet funding, which are adjacent to groupay's expense settlement goals.

onlinecheckwriter

known forCheck Mail

1 app5.0Lifestyle

It operates in the same financial utility space by facilitating digital check delivery and multi-account management.

PiyoLog

known forCalendar Z

1 app4.3Utilities

Combines calendar and reminder management with specialized iPad multitasking support.

SMART WIDGET LABS COMPANY

known forCalendar Widget for iPhone

1 app4.0Utilities

Addresses the demand for aesthetic home screen personalization through customizable calendar widgets.

TinyWork Apps

known forTiny Calendar: Planner & Tasks

2 apps4.7Utilities

Provides a multi-account alternative for users needing more power than the native calendar interface.

Tu Hoang

known forJust Calendar: Complication

1 app4.3Utilities

Delivers watch-native calendar views for users who want full scheduling control on their wrist.

YunaSoft

known forWidgetCal-Calendar Widget

1 app3.6Utilities

Targets casual users who prioritize aesthetic widget design over complex scheduling features.

New entrants(4)

3 Dogs and a Cat Software

known forTip Calculator

1 app0.0Lifestyle

This newcomer targets the same casual user base looking for quick, visual bill-splitting tools.

Hugo Andrada

known forMilitar Pay Calculator

1 app0.0Lifestyle

This app demonstrates the trend of hyper-specialized calculators, focusing on military-specific income and debt projections.

JAEHYUN KIM

known forNumbox

1 app0.0Lifestyle

Numbox is a new entrant that provides customizable calculation boards, offering a more flexible interface for tracking custom lists.

QPCU

known forQBANK

1 app0.0Lifestyle

QBANK enters the space by offering modern payment rails like PayID, which simplifies the actual settlement of split bills.

The Analyst's Read

The bottom line on Akihiro Usui

Bottom line

Akihiro Usui is a disciplined indie developer with a clear focus on the utilitarian segment of the App Store. Their strength lies in identifying and filling gaps in native Apple Watch functionality, though their reliance on niche power-user features limits their total addressable market.

Frequently asked questions

How many apps does Akihiro Usui publish?
Akihiro Usui has 7 apps tracked by Marlvel, primarily in the Utilities category.
What kind of apps does Akihiro Usui make?
Akihiro Usui's portfolio is concentrated in Utilities and Lifestyle, with an average rating of 0.9/5 across rated apps.
What is Akihiro Usui's top app?
By review volume across the portfolio, CalCs - Calendar Complications is Akihiro Usui's best-known app tracked by Marlvel.

What fed this analysis

Apps analyzed:
7
With full intel:
0
With overview:
7
Website scraped:
yes
Social presence:
no

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 Akihiro Usui, 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. “Akihiro Usui intelligence.” Updated 2026-04-28. https://marlvel.ai/publishers/akihiro-usui

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Data licensed under CC-BY-NC 4.0