Coincheck App Ranks "No. 1 in Japan" for Downloads in H1 2026

Coincheck Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative Directors: Satoshi Hasuo, Tomoyuki Isaka; hereinafter "the Company") is pleased to announce that its "Coincheck App," which boasts the No. 1 active user base in Japan*, has recorded "No. 1 in Japan"* for download numbers in the first half of 2026 among cryptocurrency trading apps in Japan. The "Coincheck App" has achieved the "No. 1 in Japan" ranking for app downloads for seven consecutive years, up to December 2025.

* Target: Cryptocurrency trading apps in Japan, Period: January 2026 - June 2026. Data provided by: AppTweak

The Company will continue to strive for improvements, aiming to provide an app that is easy to use, allowing even those new to cryptocurrency trading to easily purchase cryptocurrencies such as Bitcoin.

Three Highlights from H1 2026

Expanding Cryptocurrency Touchpoints through Partnerships with Coincheck CaaS

1. Launch of Point Exchange Service for Cryptocurrencies with Saison Card's "Perpetual Savings Points"

We have entered into a business partnership agreement with Credit Saison Co., Ltd. to further expand the domestic cryptocurrency market and create new services. Starting June 29, 2026, we launched a service that allows "Perpetual Savings Points" to be exchanged for three types of cryptocurrencies. This partnership aims to create opportunities for Saison Card members to access cryptocurrencies and new financial services. We will promote collaboration in areas such as point programs and customer loyalty programs, the integration of payment services and cryptocurrency services, and marketing cooperation utilizing each other's customer base.

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2. Business Partnership Agreement with KDDI and Establishment of New Company "au Coincheck Digital Assets, Inc."

We have entered into a business partnership agreement with KDDI Corporation. By combining KDDI's customer base within the "au Economy Zone" with our expertise in the cryptocurrency business, we will expand access opportunities to digital assets, including cryptocurrencies, and integrate digital assets into everyday services.

Furthermore, KDDI, au Financial Holdings, Inc., and our company have established a new company, "au Coincheck Digital Assets, Inc.," to promote a non-custodial wallet business. This company aims to create an environment where digital assets, including cryptocurrencies and stablecoins, can be used more readily, centered around a non-custodial wallet offered as a mini-app within au PAY.

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3. Partnership with Mercari Begins, Enabling Trading of Coincheck Listed Cryptocurrencies on "Mercari" (Coincheck CaaS)

Starting June 8, 2026, we have launched a partnership that allows trading of cryptocurrencies handled by Coincheck (a total of 12 types, including Shiba Inu and Dogecoin) within the Mercari app. With this partnership, customers using the Mercari app can now trade a wider variety of cryptocurrencies handled by Coincheck, in addition to the existing three types (Bitcoin, Ethereum, and XRP), easily and securely within their usual Mercari app, directly with our company.

In conjunction with this partnership, we have also launched "Coincheck CaaS (Crypto as a Service)," an embedded financial service that allows the integration of cryptocurrency buying and selling functions via API. We plan to further expand partnerships with various applications and services that have user bases.

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Reference

Highlights from 2025 (Annual/H2) can be found here.

About Coincheck Co., Ltd.

With the mission of "Making New Value Exchange More Accessible," Coincheck Co., Ltd. operates "Coincheck," a personal cryptocurrency trading service with the No. 1 active user base in Japan* and the No. 1 app download ranking for seven consecutive years**; "Coincheck Prime," which supports cryptocurrency trading and custody for corporations and institutional investors; "Coincheck CaaS," an embedded cryptocurrency trading service; and "Coincheck Partners," which supports corporate on-chain related businesses. As a group company of Monex Group, Inc., listed on the Tokyo Stock Exchange Prime Market, and Coincheck Group N.V., listed on the US NASDAQ, we provide "new value exchange" created by cryptocurrencies such as Bitcoin and Ethereum, and blockchain technology, with transparency, reliability, and security.

* Reference: Our press release dated February 26, 2026, "Coincheck App Wins "Best Crypto App" at APAC Awards 2025"

** Target: Cryptocurrency trading apps in Japan. Period: January 2019 - December 2025. Data provided by: AppTweak

Company Name: Coincheck, Inc.

Headquarters: 27F, Shibuya Sakura Stage, 1-4 Sakuragaoka-cho, Shibuya-ku, Tokyo 150-6227

Established: August 28, 2012

Representative Directors: Satoshi Hasuo, Tomoyuki Isaka

Cryptocurrency Exchange Operator Registration: Kanto Local Finance Bureau No. 00014

Coincheck, Inc. Corporate Website: https://corporate.coincheck.com/