Short answer: not yet. A Helm chart is on the roadmap, but none is published and there is no chart registry to add. Packaging for this release is Docker Compose.
What exists today
Docker Compose is the supported way to run Appsweet. The repository's bundled stack brings up the backend, Postgres, Zitadel, and object storage together, wired to the same environment variables documented under Configuration; the two-service example on Docker Compose is the smaller starting point for operators who already run Zitadel. Start from that page either way.
Nothing about the container is Compose-specific — it is a normal image that reads its configuration from the environment. If you already run Kubernetes you can write your own Deployment and Service around it. You are then maintaining those manifests yourself, which is exactly the work the chart is meant to remove.
What is planned
A Helm chart is planned but not yet built, published, or supported. When it lands it will be announced with a release, and this page will carry the install instructions.
There is no Appsweet chart registry to add, so any helm repo add line you find elsewhere
is out of date rather than something you are missing a credential for.