Mybest, operator of product comparison service with 30 million monthly users, starts content partnership with Japan's largest taxi media 'TOKYO PRIME'

Mybest Inc. (Headquarters: Chuo-ku, Tokyo; CEO: Toru Yoshikawa; hereinafter 'Mybest'), operator of the product comparison service 'Mybest', has started a content partnership with IRIS Inc. (Headquarters: Minato-ku, Tokyo; Co-CEOs: Takuya Mai and Teppei Toda; hereinafter 'IRIS'), which operates 'TOKYO PRIME', Japan's largest taxi media. Through this collaboration, video content using highly reliable product data based on Mybest's thorough verification will be broadcast sequentially on approximately 71,000 taxi signage screens nationwide starting Monday, June 8, 2026. In addition, the companies will also begin offering new sponsored advertising menus that leverage Mybest's verification content and the reach of 'TOKYO PRIME' taxi media.

Background of the initiative

Mybest, Japan's largest product comparison service used by over 30 million monthly unique users, has a mission of 'delivering the best choice experience on the internet' and a vision of 'enriching users' lives.' The service thoroughly verifies products across a wide range of categories, including home appliances, cosmetics, and daily necessities, providing selection support based on fair selection criteria. In recent years, the importance of encountering highly reliable product information based on reviews and verification data has increased during consumers' comparison and evaluation phase. To meet these needs, Mybest recognized the importance of expanding touchpoints to naturally deliver product verification data, which had previously been provided mainly through web services and apps, into everyday life lines.

Mybest's mission and IRIS's desire to 'transform taxi travel time into a valuable information experience' aligned, leading to this initiative. By leveraging Mybest's product verification data and TOKYO PRIME's media contact power in private spaces, the partnership supports better purchasing decisions for consumers.

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・Target: Taxi media 'TOKYO PRIME' (approximately 71,000 units nationwide) ・Start of broadcast: Sequential from Monday, June 8, 2026

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Key points of the collaboration

1. Provision of highly reliable content based on thorough verification

Mybest actually purchases over 2,000 products each month and conducts thorough in-house verification based on verification criteria designed by specialized personnel. Broadcasting content based on this objective data inside taxis delivers highly reliable product information to passengers.

2. Transforming travel time into an opportunity for 'good purchases'

'TOKYO PRIME' is a media that is easy to watch with concentration in a private travel space. It provides the experience of naturally encountering highly reliable information based on product verification data during daily travel time, contributing to Mybest's goal of 'realizing the best choice experience.'

3. Creating offline touchpoints

This collaboration adds a new channel of approximately 71,000 taxi interiors nationwide, making it possible to deliver product verification data even to users who have not previously encountered Mybest. It expands reach not only to 'people who search' but also to 'people who travel,' further expanding offline touchpoints.

Future prospects

Mybest is actively promoting initiatives to provide accumulated product verification data and knowledge to external partners, not limited to information provision on its own service. It has already built collaboration results across industries and channels, such as ad delivery using Mybest content in the official app of the Tsuruha Group and data provision to Yahoo! Search's 'Shopping AI Assistant.' This collaboration with taxi signage further extends such initiatives to new life touchpoints. Going forward, Mybest will continue to expand the reach of product verification information through various media and channels, both online and offline, to support each individual's best choice.

About TOKYO PRIME

Details: https://www.tokyo-prime.jp/

'TOKYO PRIME,' operated by IRIS Inc., is Japan's largest taxi media broadcast on rear-seat tablets installed primarily in taxis summoned via the 'GO' app. As of April 2026, the number of signage installations expanded to 71,000 units (25,500 in Tokyo) across 36 prefectures nationwide. With the concept of '18 minutes to encounter an unseen PRIME,' it delivers content condensing 'PRIME serendipity' – encounters with special things, events, and information that only taxi passengers can experience.

Mybest Inc.

With the mission of 'delivering the best choice experience on the internet,' Mybest develops and operates 'Mybest,' Japan's largest product comparison service used by over 30 million monthly unique users. It has expanded to eight countries and regions outside Japan, aiming to realize the best choice experience and change the world.

・Location: Sumitomo Fudosan Tsukiji Building, 7-17-1 Tsukiji, Chuo-ku, Tokyo ・Representative: Toru Yoshikawa ・Established: October 2016 ・Business: Operation of the product comparison service 'Mybest,' which compares and verifies products and services across all genres such as home appliances, daily necessities, cosmetics, and fashion, and supports users in making optimal choices. ・Corporate site: https://my-best.com/company/

Product comparison service 'Mybest'

'Mybest' is Japan's largest product comparison service specialized in the domain of 'choice.' Based on thorough in-house verification and fair selection criteria informed by expert opinions, it provides recommendation information on products and services, supporting each individual's best choice. Going forward, by combining its extensive product database with user information, it aims to provide personalized choice experiences, creating a world where everyone can easily discover what is best for them.