diff --git a/castellum/geofilters-example/__init__.py b/castellum/geofilters-example/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/castellum/geofilters-example/custom_filters.py b/castellum/geofilters-example/custom_filters.py
new file mode 100644
index 0000000000000000000000000000000000000000..3c0e2bfdd1159f11b6cf1e55372032fd9366a214
--- /dev/null
+++ b/castellum/geofilters-example/custom_filters.py
@@ -0,0 +1,29 @@
+# (c) 2018-2020
+#     MPIB <https://www.mpib-berlin.mpg.de/>,
+#     MPI-CBS <https://www.cbs.mpg.de/>,
+#     MPIP <http://www.psych.mpg.de/>
+#
+# This file is part of Castellum.
+#
+# Castellum is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Castellum is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public
+# License along with Castellum. If not, see
+# <http://www.gnu.org/licenses/>.
+
+from django.db import models
+
+from castellum.recruitment import filter_registry
+
+
+@filter_registry.register('example_geofilter')
+def example_geofilter(**kwargs):
+    return models.Q(exampleresult__is_match=True)
diff --git a/castellum/geofilters-example/management/__init__.py b/castellum/geofilters-example/management/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/castellum/geofilters-example/management/commands/__init__.py b/castellum/geofilters-example/management/commands/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/castellum/geofilters-example/management/commands/geo_example.py b/castellum/geofilters-example/management/commands/geo_example.py
new file mode 100644
index 0000000000000000000000000000000000000000..c3cbbc57189f1f6bc9f5a3f5822be219f72b107b
--- /dev/null
+++ b/castellum/geofilters-example/management/commands/geo_example.py
@@ -0,0 +1,42 @@
+# (c) 2018-2020
+#     MPIB <https://www.mpib-berlin.mpg.de/>,
+#     MPI-CBS <https://www.cbs.mpg.de/>,
+#     MPIP <http://www.psych.mpg.de/>
+#
+# This file is part of Castellum.
+#
+# Castellum is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Castellum is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public
+# License along with Castellum. If not, see
+# <http://www.gnu.org/licenses/>.
+
+from django.core.management.base import BaseCommand
+
+from geopy.distance import distance
+
+from castellum.geofilters.models import Geolocation
+
+from ...models import ExampleResult
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **kwargs):
+        center = (52.4685095, 13.3037248)
+        results = []
+        for loc in Geolocation.objects:
+            d = distance((loc.lat, loc.lng), center)
+            results.append(ExampleResult(
+                subject_id=loc.contact.subject_id,
+                is_match=d.km < 3,
+            ))
+        ExampleResult.objects.bulk_create(results)
+        print('Create %i results' % len(results))
diff --git a/castellum/geofilters-example/migrations/0001_initial.py b/castellum/geofilters-example/migrations/0001_initial.py
new file mode 100644
index 0000000000000000000000000000000000000000..8e92c87d7b133944465cd3d6764360804b6bea8a
--- /dev/null
+++ b/castellum/geofilters-example/migrations/0001_initial.py
@@ -0,0 +1,24 @@
+# Generated by Django 3.0.6 on 2020-06-10 12:03
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('subjects', '0016_consentdocument_is_deprecated'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ExampleResult',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('is_match', models.BooleanField()),
+                ('subject', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to='subjects.Subject')),
+            ],
+        ),
+    ]
diff --git a/castellum/geofilters-example/migrations/__init__.py b/castellum/geofilters-example/migrations/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/castellum/geofilters-example/models.py b/castellum/geofilters-example/models.py
new file mode 100644
index 0000000000000000000000000000000000000000..b69582315d47d1c5b1b6513bb0a97f46d71faffc
--- /dev/null
+++ b/castellum/geofilters-example/models.py
@@ -0,0 +1,29 @@
+# (c) 2018-2020
+#     MPIB <https://www.mpib-berlin.mpg.de/>,
+#     MPI-CBS <https://www.cbs.mpg.de/>,
+#     MPIP <http://www.psych.mpg.de/>
+#
+# This file is part of Castellum.
+#
+# Castellum is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Castellum is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public
+# License along with Castellum. If not, see
+# <http://www.gnu.org/licenses/>.
+
+from django.db import models
+
+from castellum.subjects.models import Subject
+
+
+class ExampleResult(models.Model):
+    subject = models.OneToOneField(Subject, on_delete=models.CASCADE)
+    is_match = models.BooleanField()
diff --git a/castellum/settings/development.py b/castellum/settings/development.py
index d63abc18359b24c8c33ab0afe6cb1664d227cf2a..cf59337f7ef471c0f522f52dd408f012dd438aaf 100644
--- a/castellum/settings/development.py
+++ b/castellum/settings/development.py
@@ -51,4 +51,5 @@ CASTELLUM_DELETE_NOTIFICATION_TO = 'data-protection@example.com'
 
 # Setup geofilters
 INSTALLED_APPS.append('castellum.geofilters')
+INSTALLED_APPS.append('castellum.geofilters-example')
 NOMINATIM = {'user_agent': 'castellum'}