Nihon EC Service

What Nihon EC Service does

Nihon EC Service Corporation (日本ECサービス株式会社) is a privately held Japanese software vendor founded on May 24, 2011, headquartered in Shibuya, Tokyo. The company develops and operates EC-master (ECマスターズ), a software suite targeting small and mid-sized online retailers operating on Japan's major e-commerce marketplaces. Its flagship product, ECGO, is a Google Chrome browser extension that overlays operational tools — competitor page comparison, SKU and inventory management, ranking display, link-breakage detection, smartphone view preview, banner and coupon management, and one-click RMS edit-screen access — directly onto Rakuten, Yahoo! Shopping, Amazon Japan, and au PAY Market product pages. Around ECGO, the company has assembled approximately 30 specialized desktop and browser utilities (collectively EC-master Tools) covering CSV batch editing, scheduled FTP uploads, LINE messaging integration (LSEG), Rakuten keyword-advertising automation (RAT), and image/badge automation (IMG-UP).

The company's commercial model is multi-layered: a free Chrome extension serves as a product-led top-of-funnel, converting users into the らくらくEC Pack (Rakuran EC Pack) subscription at three price tiers — Starter (¥20,000/month), Standard (¥30,000/month), and Pro (¥50,000/month) — with annual prepay discounts of 5–15% and a ¥100,000 initial fee waived on annual contracts. The EC-master Club membership platform adds a forum (1,500+ posts), video library, and email support letters. A supplementary paid seminar circuit operates across Tokyo, Osaka, Nagoya, Fukuoka, Sapporo, and online, drawing 80–155+ attendees per session. The company reports a user base of 2,600+ Rakuten shops and 16,000 total registered users, with no disclosed revenue, headcount, funding rounds, or M&A activity. The founder and representative director is Yabunaka Keisuke (薮中桂佑); the company is independently owned with ¥10 million in stated capital and no parent or subsidiary structure.

Name

Nihon EC Service

Legal name

日本ECサービス株式会社

Website

https://ec-masters.net

Company type

Private

Founded year

2011

Operating status

Operating

Short description

Nihon EC Service builds EC-master, a Chrome-extension-led suite of ~30 tools that help Japanese SMB retailers operate stores on Rakuten, Yahoo! Shopping, Amazon Japan, and au PAY Market, monetized via tiered subscriptions (¥20k–50k/month) and paid seminars.

Ownership category

akta.pro rank

Product category

Ecommerce Operations Software

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518210)

SIC

Services-Computer Programming Services (7371)

akta.pro primary industry

Enterprise Content Management (ECM) Suites (HDAEAGAB)

Keywords

• Ecommerce operations software
• Marketplace seller tools
• Browser extension tools
• Rakuten shop management
• Ecommerce analytics software

Headquarters

HQ city

Shibuya, Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations

Revenue model

1. Membership Subscription (EC MASTER'S CLUB): Monthly/annual subscription service providing access to bundled EC operational tools, forum support, video content, and support letters. Three tiers: Starter (¥20,000/mo), Standard (¥30,000/mo), and Pro (¥50,000/mo). Annual contracts offer 5-15% discounts with free initial setup fee.
2. Chrome Extension (ECGO): Free browser extension with optional premium features for enhanced EC shop operations support.
3. Seminars and Events: Paid educational seminars on EC operations, strategy, and tool usage held across Japan and online.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Nihon EC Service develops and sells ECGO, a Google Chrome browser extension, along with the EC-master Tools suite, that overlays operational, analytical, and editing features directly onto Japanese e-commerce marketplace pages (Rakuten, Yahoo! Shopping, Amazon Japan, au PAY Market). The company also operates EC-master Club, a paid membership platform bundling these tools with educational content, a community forum, LINE marketing automation, and advertising management for Japanese online shop operators.

Product overview

Nihon EC Service operates EC-master (ECマスターズ), a comprehensive e-commerce support platform consisting of a Chrome browser extension (ECGO) as the primary consumer-facing product, a suite of over 30 specialized desktop and browser-based tools (EC-master Tools), and the EC-master Club membership platform. ECGO is a browser extension that overlays e-commerce analytics, ranking checks, SKU management, and RMS quick-access features directly onto Rakuten, Yahoo! Shopping, Amazon, and au PAY marketplace pages. The EC-master Tools include specialized utilities for search rank checking, keyword research (サジェスト君), product CSV batch editing (R-Task), scheduled uploads (アップロード予約, FTP自動アップ君), image updates (IMG-UP), LINE marketing automation (LSEG), inventory management (らくらく在庫), review solicitation (らくらくーぽん), and coupon management — spanning operations across all major Japanese e-commerce platforms. The bundled らくラクECパック subscription (Starter/Standard/Pro tiers) packages these tools with membership club access, advertising automation (RAT), and support services for Shopify owners and multi-platform sellers.

Differentiator

Problem solved

Functional benefit

Brands

• ECGO: Chrome拡張機能。楽天・Yahoo!・Amazon対応のブラウザ拡張ツールで、商品ページ更新やリンク切れチェックなどのEC運営業務をサポートする。
• らくらくECパック
• ECマスターズクラブ

Products and services

• ECGO (Chrome Extension)
• EC-master Tools
• EC-master Club (EC-master クラブ)
• IMG-UP (Image Upload)
• R-Task (R-たすく)
• LSEG (Line Smart E-commerce Gateway)
• RAT (RPP Operation Automation Tool)
• FTP Auto Upload (FTP自動アップ君)
• Search Rank Checker (検索順位チェック君 / 検索順位君)
• Inventory Management (らくらく在庫)
• Review Automation (らくらくーぽん)
• AI Tagger (AIタッガー)
• EC-master In-Person Seminars

Quantifiable outcome

• Smartphone browsing accounts for approximately 90% of customer visits on Rakuten

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature7 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• CROSS MALL (クロスモール): CROSS MALL is a multi-channel EC management platform offering inventory synchronization and order aggregation across Japanese marketplaces — directly comparable to Nihon EC Service's multi-marketplace positioning and similar target SMB sellers.
• NextEngine (ネクストエンジン): NextEngine is a multi-channel order, inventory, and shipping management platform serving the same Rakuten/Yahoo!/Amazon seller base in Japan; Nihon EC Service's forum threads explicitly reference NextEngine integration, confirming overlapping customer base and complementary product positioning.
• Channel Core (チャネルコア): Channel Core offers multi-channel e-commerce store operations support across Japanese marketplaces, targeting SMB sellers — competing for the same customer segment with cross-marketplace operational tools.
• GoQSystem: GoQSystem provides multi-channel EC management software for Japanese SMB sellers, including order management, inventory, and storefront operations across Rakuten, Yahoo!, and Amazon — overlapping core customer base with Nihon EC Service.
• StoreHero (ストアヒーロー): StoreHero provides EC operations tools specifically for Yahoo! Shopping and Rakuten marketplace sellers, including page analytics, ranking tracking, and competitor analysis — directly competing with ECGO and EC MASTER'S in the same Japanese SMB seller segment.
• LOGILESS (ロジレス): LOGILESS provides cloud-based fulfillment and shipping management for Japanese EC SMB sellers — comparable target market (Rakuten/Yahoo! shop operators) with overlapping operational toolset, though more focused on logistics than marketing/analytics.

Others

• Shopify Japan: Shopify operates a global commerce platform with growing Japan presence; its built-in analytics, app ecosystem, and operational tools represent indirect competitive pressure on marketplace-specialist tools like Nihon EC Service, especially for sellers considering moving from marketplaces to DTC.

Broad incumbents

• Makeshop by GMO: Makeshop is one of Japan's largest EC platform providers, offering native storefront building, payment, and operational tools — broader incumbent with overlapping seller operations capability, though focused on platform hosting rather than marketplace operations tools.

Market position

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nihon EC Service