The evidence strongly supports the statement that Startale and Sony have launched an application on the Soneium Ethereum Layer-2 Network.First, the core partnership between Startale and Sony for the Soneium network is well-established. One source explicitly states that the firm Startale built the 'Soneium' blockchain with Sony. This is corroborated by Soneium's official social media, which states the project is "Powered by #Sony Block Solutions Labs," and a fintech news article reporting on Sony's launch of the network. This confirms that both entities are the driving forces behind the Soneium network.Second, there is direct evidence of Startale's involvement with a specific application on this network. A data analytics platform links Startale to an application, identifying KYO Finance as a decentralized exchange (DEX) built on the Soneium ecosystem and listing it under Startale's activities.Third, multiple sources confirm that applications and user-facing activities are live on the network. Reports of a "Soneium Score Season 3" on "Sony's L2 chain" and social media posts from projects on the network mentioning 'quests' indicate that the ecosystem is active.While no single source uses the exact phrasing "Startale and Sony have launched an application," the collective evidence leads to this conclusion with high confidence. The partnership created the network, and one of the core partners (Startale) is directly linked to an application running on it. Therefore, it is highly likely the statement is true.