Startale Integrates Privacy Boost Into Consumer Crypto App

Startale Group has announced a partnership with Sunnyside Labs to bring Privacy Boost as the official privacy layer for the Startale App, marking a step toward embedding native privacy features into consumer crypto platforms.

The integration will deploy directly on Soneium, the network developed by Sony Block Solutions Labs, and represents Privacy Boost’s first implementation within a consumer-facing application.

Positioned as a gateway to the on-chain economy, the Startale App supports asset management, payments, Mini Apps, and ecosystem rewards. 

As usage grows, the addition of privacy tooling addresses a core limitation of public blockchains, where transaction data such as balances and counterparties is typically visible by default.

Hybrid privacy architecture targets consumer scale

Privacy Boost introduces a hybrid system combining zero-knowledge proofs with trusted execution environments, enabling private transactions while maintaining performance and compliance flexibility.

According to the announcement, the system can generate proofs in under 500 milliseconds and process more than 1,800 transactions per second. It also preserves self-custody while allowing selective auditability, balancing privacy with regulatory considerations.

Within the Startale App, the integration will enable features such as private asset pools, concealed transfers, and privacy-preserving payment flows. These capabilities are designed to extend into future use cases, including crypto-linked card payments and Mini App ecosystems.

"Not every transaction needs to be private, but every user should have the choice," said Sota Watanabe, CEO of Startale Group. "With Privacy Boost integrated into the Startale App, privacy becomes something users can enable when it matters. It puts control in their hands to decide when and how they protect their on-chain activity. That is what a true SuperApp should deliver."

The deployment also includes the full Privacy Boost protocol stack on Soneium, allowing developers to integrate privacy features directly into applications built on the network.

As consumer-facing crypto platforms evolve, the partnership reflects a broader trend toward embedding optional privacy at the application layer, giving users more control over how their onchain activity is exposed while maintaining usability at scale.