Japan finalizes app store rules, orders Apple and Google to open billing and allow rival stores from October

Japan’s government on Wednesday published final enforcement guidelines for a new smartphone software law that will require Apple and Google to allow third party app stores and alternative in app payment processing starting in October. The Ministry of Internal Affairs and Communications and the Japan Fair Trade Commission said designated gatekeepers face penalties tied to domestic revenue if they restrict developer payment choice or self prefer their own services.

The move matters now because developers can begin applying for certification of alternative billing systems and distribution channels, and local payment networks are preparing technical integrations. Japan ranks among the top global markets by consumer spend on mobile apps, which gives enforcement immediate commercial weight for games and subscription media.

What the rules require The guidelines bar contractual or technical blocks on steering users to outside payment links, and prohibit anti steering clauses in developer terms. They also require gatekeepers to permit third party app stores on iOS and Android in Japan, and to publish transparent criteria for review, security, and discovery.

MIC and the JFTC will coordinate audits and remedies through the Cabinet Secretariat’s Digital Market Competition Headquarters. The agencies said non compliance can trigger orders to correct conduct and administrative surcharges, with repeat violations escalating oversight.

Why this matters for payments and games Domestic wallets including PayPay, Line Pay, Rakuten Pay, and NTT Docomo’s d Barai have been courting app developers ahead of the rule’s start date, according to industry briefings by carriers and payments units. Japan accounted for roughly 20 billion dollars in consumer app spend in 2023, per data.ai, and iPhone share exceeded 60 percent of handset shipments, according to MM Research Institute, so alternative billing could move meaningful volume off Apple and Google rails.

Major publishers such as Bandai Namco, Square Enix, CyberAgent’s Cygames, Mixi, and Konami will evaluate fee savings against compliance costs and user experience changes. Global firms with large Japan businesses, including Tencent and NetEase, will also have to test separate builds, pricing, and customer support for the Japan market.

For the broader technology landscape, Japan is aligning with the European Union and South Korea in setting explicit obligations on mobile gatekeepers, which increases pressure for interoperable compliance across regions. Payments, ad tech, and browser defaults are becoming regulated product surfaces in Asia, and that will shape how platforms design operating system features and revenue models in the next product cycle.