diff --git a/app_vaex.py b/app_vaex.py
new file mode 100644
index 0000000..e3200da
--- /dev/null
+++ b/app_vaex.py
@@ -0,0 +1,33 @@
+import os
+import sys
+from pathlib import Path
+
+import typer
+import vaex as vx
+
+from utils import with_res_logger
+
+app = typer.Typer()
+
+
+def load(year):
+    return vx.open(Path(os.environ["DATA"]) / f"{year}.csv")
+
+
+@app.command()
+@with_res_logger
+def top_flop(year: str):
+    if (
+        (sys.version_info.minor > 10)
+        and (sys.version_info.minor < 7)
+        and (sys.version_info.major == 3)
+    ):
+        raise Exception("Only python versions >=3.7,<3.11 are supported.")
+    df = (
+        load(year)
+        .groupby("code_postal")
+        .agg({"id_mutation": vx.agg.nunique("id_mutation")})
+        .sort("id_mutation", ascending=False)
+    )
+    print(df.head(10))
+    print(df.tail(10))
diff --git a/main.py b/main.py
index 30c4dbe..97b9d8c 100755
--- a/main.py
+++ b/main.py
@@ -18,6 +18,7 @@
 from app_explore import app as explore_app  # noqa: E402
 from app_pandas import app as pandas_app  # noqa: E402
 from app_polars import app as polars_app  # noqa: E402
+from app_vaex import app as vaex_app  # noqa: E402
 from utils import with_res_logger  # noqa: E402
 
 app = typer.Typer()
@@ -43,6 +44,7 @@ def wait(secs: int):
 app.add_typer(dask_app, name="dask")
 app.add_typer(polars_app, name="polars")
 app.add_typer(duckdb_app, name="duckdb")
+app.add_typer(vaex_app, name="vaex")
 
 
 if __name__ == "__main__":