Accrescent is a private and secure Android app store built with modern features in mind. It aims to provide a developer-friendly platform and pleasant user experience while enforcing modern security and privacy practices and offering robust validity guarantees for installed apps.
Features

App signing key pinning: first-time app installs are verified so you don't have to TOFU.
Signed repository metadata: repository contents are protected against malicious tampering.
Automatic, unatt