diff --git a/app/package.json b/app/package.json
index cf28739d..e02c9522 100644
--- a/app/package.json
+++ b/app/package.json
@@ -10,7 +10,8 @@
     "dev": "vite --host",
     "build": "tsc && vite build",
     "test:lint:eslint": "eslint --max-warnings 0 .",
-    "preview": "vite preview"
+    "preview": "vite preview",
+    "test:unit": "vitest run"
   },
   "dependencies": {
     "@directus/sdk": "^17.0.2",
@@ -50,6 +51,7 @@
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.9.0",
     "vite": "^7.3.1",
-    "vite-plugin-pwa": "^1.2.0"
+    "vite-plugin-pwa": "^1.2.0",
+    "vitest": "^4.0.16"
   }
 }
diff --git a/app/src/api/layerLabels.spec.ts b/app/src/api/layerLabels.spec.ts
new file mode 100644
index 00000000..193ff7b3
--- /dev/null
+++ b/app/src/api/layerLabels.spec.ts
@@ -0,0 +1,76 @@
+/* eslint-disable camelcase -- `maps_id` is the Directus junction field name */
+import { describe, expect, it } from 'vitest'
+
+import { applyMapLabelOverrides } from './layerLabels'
+
+const MAP = 'map-de'
+const OTHER_MAP = 'map-en'
+
+const layer = (maps: unknown) => ({ name: 'Gärten', menuText: 'Garten eintragen', maps })
+
+describe('applyMapLabelOverrides', () => {
+  it('uses the override belonging to the requested map', () => {
+    const [result] = applyMapLabelOverrides(
+      [
+        layer([
+          { maps_id: OTHER_MAP, name: 'Gardens', menuText: 'add a garden' },
+          { maps_id: MAP, name: null, menuText: null },
+        ]),
+      ],
+      OTHER_MAP,
+    )
+
+    expect(result.name).toBe('Gardens')
+    expect(result.menuText).toBe('add a garden')
+  })
+
+  it('falls back to the layer label when the override is empty', () => {
+    const [result] = applyMapLabelOverrides(
+      [layer([{ maps_id: MAP, name: null, menuText: '   ' }])],
+      MAP,
+    )
+
+    expect(result.name).toBe('Gärten')
+    expect(result.menuText).toBe('Garten eintragen')
+  })
+
+  it('overrides each label independently', () => {
+    const [result] = applyMapLabelOverrides(
+      [layer([{ maps_id: MAP, name: 'Gemeinschaftsgärten', menuText: null }])],
+      MAP,
+    )
+
+    expect(result.name).toBe('Gemeinschaftsgärten')
+    expect(result.menuText).toBe('Garten eintragen')
+  })
+
+  it('accepts an expanded maps_id object', () => {
+    const [result] = applyMapLabelOverrides(
+      [layer([{ maps_id: { id: MAP }, name: 'Gemeinschaftsgärten' }])],
+      MAP,
+    )
+
+    expect(result.name).toBe('Gemeinschaftsgärten')
+  })
+
+  it('ignores junction rows of other maps and dangling rows', () => {
+    const [result] = applyMapLabelOverrides(
+      [
+        layer([
+          { maps_id: null, name: 'Waise' },
+          { maps_id: OTHER_MAP, name: 'Gardens' },
+        ]),
+      ],
+      MAP,
+    )
+
+    expect(result.name).toBe('Gärten')
+  })
+
+  it('leaves layers untouched when the junction is not expanded', () => {
+    const input = layer([701, 702])
+    const [result] = applyMapLabelOverrides([input], MAP)
+
+    expect(result).toBe(input)
+  })
+})
diff --git a/app/src/api/layerLabels.ts b/app/src/api/layerLabels.ts
new file mode 100644
index 00000000..a442b154
--- /dev/null
+++ b/app/src/api/layerLabels.ts
@@ -0,0 +1,46 @@
+/**
+ * A row of the `layers_maps` junction, which represents "this layer, on this map".
+ * `name` and `menuText` are optional per-map overrides: when a layer is shared
+ * between maps, each map can label it in its own language.
+ */
+interface LayerMapAssignment {
+  maps_id?: string | { id?: string } | null
+  name?: string | null
+  menuText?: string | null
+}
+
+const assignedMapId = (assignment: LayerMapAssignment): string | undefined =>
+  typeof assignment.maps_id === 'string'
+    ? assignment.maps_id
+    : (assignment.maps_id?.id ?? undefined)
+
+/** Treats null, undefined and blank strings alike, so an emptied field falls back. */
+const override = (value: string | null | undefined, fallback: string): string =>
+  typeof value === 'string' && value.trim() !== '' ? value : fallback
+
+const isAssignment = (candidate: unknown): candidate is LayerMapAssignment =>
+  typeof candidate === 'object' && candidate !== null
+
+/**
+ * Applies the per-map label overrides stored on the `layers_maps` junction.
+ * Layers without an override for `mapId` are returned untouched, so maps that
+ * never set one keep the labels defined on the layer itself.
+ */
+export function applyMapLabelOverrides<
+  T extends { name?: string; menuText?: string; maps?: unknown },
+>(layers: T[], mapId: string): T[] {
+  return layers.map((layer) => {
+    const assignments = Array.isArray(layer.maps) ? layer.maps : []
+    const assignment = assignments
+      .filter(isAssignment)
+      .find((candidate) => assignedMapId(candidate) === mapId)
+
+    if (!assignment) return layer
+
+    return {
+      ...layer,
+      name: override(assignment.name, layer.name ?? ''),
+      menuText: override(assignment.menuText, layer.menuText ?? ''),
+    }
+  })
+}
diff --git a/app/src/api/layersApi.ts b/app/src/api/layersApi.ts
index fa779ecf..921647b0 100644
--- a/app/src/api/layersApi.ts
+++ b/app/src/api/layersApi.ts
@@ -4,6 +4,9 @@
 import { readItems } from '@directus/sdk'
 
 import { directusClient } from './directus'
+import { applyMapLabelOverrides } from './layerLabels'
+
+import type { LayerProps } from 'utopia-ui'
 
 export class layersApi {
   mapId: string
@@ -14,20 +17,21 @@ export class layersApi {
 
   async getItems() {
     try {
-      const layers = await directusClient.request(
+      const layers = (await directusClient.request(
         readItems('layers' as any, {
           fields: [
             '*',
             { itemType: ['*.*', { profileTemplate: ['*', 'item.*.*.*.*'] }] },
             { markerIcon: ['*'] } as any,
+            { maps: ['maps_id', 'name', 'menuText'] } as any,
           ],
           // eslint-disable-next-line camelcase
           filter: { maps: { maps_id: { id: { _eq: this.mapId } } } },
           limit: 500,
           sort: ['sort'],
         }),
-      )
-      return layers
+      )) as unknown as LayerProps[]
+      return applyMapLabelOverrides(layers, this.mapId)
     } catch (error: any) {
       console.log(error)
       if (error.errors[0]?.message) throw error.errors[0].message
diff --git a/app/vite.config.ts b/app/vite.config.ts
index fa2b8910..828a69a2 100644
--- a/app/vite.config.ts
+++ b/app/vite.config.ts
@@ -1,3 +1,4 @@
+/// <reference types="vitest" />
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 import tailwindcss from '@tailwindcss/vite'
@@ -20,6 +21,10 @@ export default defineConfig({
      */
   },
   plugins: [react(), tailwindcss(), tsConfigPaths()],
+  test: {
+    environment: 'node',
+    include: ['src/**/*.spec.ts'],
+  },
   build: {
     sourcemap: true,
     modulePreload: {
diff --git a/backend/directus-config/development/snapshot/fields/layers_maps/menuText.json b/backend/directus-config/development/snapshot/fields/layers_maps/menuText.json
new file mode 100644
index 00000000..2d89eae1
--- /dev/null
+++ b/backend/directus-config/development/snapshot/fields/layers_maps/menuText.json
@@ -0,0 +1,46 @@
+{
+  "collection": "layers_maps",
+  "field": "menuText",
+  "type": "string",
+  "meta": {
+    "collection": "layers_maps",
+    "conditions": null,
+    "display": null,
+    "display_options": null,
+    "field": "menuText",
+    "group": null,
+    "hidden": false,
+    "interface": "input",
+    "note": "Optional: Text im Plus-Menü nur für diese Karte. Leer = menuText vom Layer.",
+    "options": {
+      "placeholder": "leer = menuText vom Layer übernehmen"
+    },
+    "readonly": false,
+    "required": false,
+    "searchable": true,
+    "sort": 5,
+    "special": null,
+    "translations": null,
+    "validation": null,
+    "validation_message": null,
+    "width": "half"
+  },
+  "schema": {
+    "name": "menuText",
+    "table": "layers_maps",
+    "data_type": "character varying",
+    "default_value": null,
+    "max_length": 255,
+    "numeric_precision": null,
+    "numeric_scale": null,
+    "is_nullable": true,
+    "is_unique": false,
+    "is_indexed": false,
+    "is_primary_key": false,
+    "is_generated": false,
+    "generation_expression": null,
+    "has_auto_increment": false,
+    "foreign_key_table": null,
+    "foreign_key_column": null
+  }
+}
diff --git a/backend/directus-config/development/snapshot/fields/layers_maps/name.json b/backend/directus-config/development/snapshot/fields/layers_maps/name.json
new file mode 100644
index 00000000..4311c95b
--- /dev/null
+++ b/backend/directus-config/development/snapshot/fields/layers_maps/name.json
@@ -0,0 +1,46 @@
+{
+  "collection": "layers_maps",
+  "field": "name",
+  "type": "string",
+  "meta": {
+    "collection": "layers_maps",
+    "conditions": null,
+    "display": null,
+    "display_options": null,
+    "field": "name",
+    "group": null,
+    "hidden": false,
+    "interface": "input",
+    "note": "Optional: Layer-Name nur für diese Karte (z.B. englisch auf der einen, deutsch auf der anderen). Leer = Name vom Layer.",
+    "options": {
+      "placeholder": "leer = Name vom Layer übernehmen"
+    },
+    "readonly": false,
+    "required": false,
+    "searchable": true,
+    "sort": 4,
+    "special": null,
+    "translations": null,
+    "validation": null,
+    "validation_message": null,
+    "width": "half"
+  },
+  "schema": {
+    "name": "name",
+    "table": "layers_maps",
+    "data_type": "character varying",
+    "default_value": null,
+    "max_length": 255,
+    "numeric_precision": null,
+    "numeric_scale": null,
+    "is_nullable": true,
+    "is_unique": false,
+    "is_indexed": false,
+    "is_primary_key": false,
+    "is_generated": false,
+    "generation_expression": null,
+    "has_auto_increment": false,
+    "foreign_key_table": null,
+    "foreign_key_column": null
+  }
+}