diff --git a/basic/apps/ninja/invoiceninja-pvc.yaml b/basic/apps/ninja/invoiceninja-pvc.yaml
new file mode 100644
index 0000000..e9b7020
--- /dev/null
+++ b/basic/apps/ninja/invoiceninja-pvc.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: invoiceninja-data
+  namespace: stackspout
+  labels:
+    stackspin.net/backupSet: "invoiceninja"
+spec:
+  accessModes:
+    - ReadWriteOnce
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: 2Gi
+  storageClassName: local-path
diff --git a/basic/apps/ninja/invoiceninja-release.yaml b/basic/apps/ninja/invoiceninja-release.yaml
new file mode 100644
index 0000000..e2e911d
--- /dev/null
+++ b/basic/apps/ninja/invoiceninja-release.yaml
@@ -0,0 +1,27 @@
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: invoiceninja
+  namespace: stackspout
+spec:
+  releaseName: invoiceninja
+  chart:
+    spec:
+      chart: invoiceninja
+      version: 0.9.2
+      sourceRef:
+        kind: HelmRepository
+        name: invoiceninja
+        namespace: flux-system
+  interval: 5m
+  valuesFrom:
+    - kind: ConfigMap
+      name: stackspin-invoiceninja-values
+      optional: false
+    # Allow overriding values by ConfigMap or Secret
+    - kind: ConfigMap
+      name: stackspin-invoiceninja-override
+      optional: true
+    - kind: Secret
+      name: stackspin-invoiceninja-override
+      optional: true
diff --git a/basic/apps/ninja/invoiceninja-values-configmap.yaml b/basic/apps/ninja/invoiceninja-values-configmap.yaml
new file mode 100644
index 0000000..4d61995
--- /dev/null
+++ b/basic/apps/ninja/invoiceninja-values-configmap.yaml
@@ -0,0 +1,48 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: stackspin-invoiceninja-values
+  namespace: stackspout
+data:
+  values.yaml: |
+    # https://github.com/invoiceninja/dockerfiles/blob/master/charts/invoiceninja/values.yaml
+    ingress:
+      enabled: true
+      # Elaborate style
+      #annotations:
+      #  kubernetes.io/tls-acme: "true"
+      #hosts:
+      #  - host: "ninja.${domain}"
+      #    paths:
+      #       - path: /
+      #         pathType: Prefix
+      #tls:
+      #  - secretName: invoiceninja-tls
+      #    hosts:
+      #      - "ninja.${domain}"
+      # Bitnami style
+      hostname: "ninja.${domain}"
+      tls: true
+      certManager: true
+    persistence:
+      public:
+        existingClaim: invoiceninja-data
+    appKey: "ksickejksickejksickejdddksickejd"
+    mariadb:
+      # https://github.com/bitnami/charts/blob/master/bitnami/mariadb/values.yaml
+      auth:
+        rootPassword: "testilein"
+        password: "bratwurst"
+    # TODO Adjust invoiceninja Mailing config
+    #    mailer:
+    #      enabled: "${outgoing_mail_enabled}"
+    #      host: "${outgoing_mail_smtp_host}"
+    #      port: "${outgoing_mail_smtp_port}"
+    #      username: "${outgoing_mail_smtp_user}"
+    #      password: "${outgoing_mail_smtp_password}"
+    #      fromemail: "${outgoing_mail_from_address}"
+    # TODO Adjust invoiceninja OpenID Connect Single Sign-On Configuration
+    #    - name: Stackspin
+    #      key: "${client_id}"
+    #      secret: "${client_secret}"
+    #      autoDiscoverUrl: 'https://sso.${domain}/.well-known/openid-configuration'
diff --git a/basic/infrastructure/kustomizations/invoiceninja-customization.yaml b/basic/infrastructure/kustomizations/invoiceninja-customization.yaml
new file mode 100644
index 0000000..1ef3e9f
--- /dev/null
+++ b/basic/infrastructure/kustomizations/invoiceninja-customization.yaml
@@ -0,0 +1,26 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1beta2
+kind: Kustomization
+metadata:
+  name: invoiceninja
+  namespace: flux-system
+spec:
+  interval: 10m
+  retryInterval: 1m
+  wait: true
+  timeout: 3m
+  #dependsOn:
+  #  - name: single-sign-on
+  sourceRef:
+    kind: GitRepository
+    name: stackspout
+  path: ./basic/apps/ninja
+  prune: true
+  postBuild:
+    substituteFrom:
+      - kind: Secret
+        name: stackspin-invoiceninja-variables
+      - kind: Secret
+        name: stackspin-invoiceninja-oauth-variables
+        optional: true
+      - kind: Secret
+        name: stackspin-cluster-variables
diff --git a/basic/infrastructure/sources/invoiceninja.yaml b/basic/infrastructure/sources/invoiceninja.yaml
new file mode 100644
index 0000000..71f7ec9
--- /dev/null
+++ b/basic/infrastructure/sources/invoiceninja.yaml
@@ -0,0 +1,9 @@
+# For kimai2
+apiVersion: source.toolkit.fluxcd.io/v1beta1
+kind: HelmRepository
+metadata:
+  name: invoiceninja
+  namespace: flux-system
+spec:
+  interval: 60m
+  url: https://invoiceninja.github.io/dockerfiles/