diff --git a/commands/utils.py b/commands/utils.py
new file mode 100644
index 0000000..75f6e0f
--- /dev/null
+++ b/commands/utils.py
@@ -0,0 +1,29 @@
+import string
+
+from packaging.version import Version
+
+LATEST = "@latest"
+
+
+def is_version_below(target: tuple[int, int], version: str) -> bool:
+    if version == LATEST:
+        return False
+    # We suppose version format to be ~=version, ==version, >version, ...
+    if version[0] in string.digits:
+        pass
+    elif version[1] in string.digits:
+        version = version[1:]
+    else:
+        version = version[2:]
+
+    version = Version(version)
+    return version < Version(f"{target[0]}.{target[1]}")
+
+
+if __name__ == "__main__":
+    assert not is_version_below((1, 22), LATEST)
+    assert not is_version_below((1, 22), "1.22.1")
+    assert is_version_below((1, 22), "1.19.1")
+    assert not is_version_below((1, 22), "~=1.24")
+    assert not is_version_below((1, 22), ">=1.24")
+    assert is_version_below((1, 22), "~=1.20")
diff --git a/noxfile.py b/noxfile.py
index 5a46450..8818d42 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -1,5 +1,4 @@
 import hashlib
-import string
 from pathlib import Path
 from typing import List
 
@@ -7,26 +6,13 @@
 import nox_poetry
 from nox_poetry.poetry import CommandSkippedError
 
-LATEST = "@latest"
+from commands.utils import LATEST, is_version_below
 
 
 def with_python_versions(python_versions: List[str], st_version: str, tqdm_version: str):
     return [(python_version, st_version, tqdm_version) for python_version in python_versions]
 
 
-def is_version_below(target: tuple[int, int], version: str) -> bool:
-    if version == LATEST:
-        return True
-    # We suppose version format to be ~=version, ==version, >version, ...
-    if version[1] in string.digits:
-        version = version[1:]
-    else:
-        version = version[2:]
-
-    st_major, st_minor = version.split(".", maxsplit=2)[:2]
-    return (int(st_major), int(st_minor)) < target
-
-
 def fix_deps_issues(streamlit_version: str) -> List[str]:
     """
     Fix issues with streamlit and stqdm deps to ease ci
@@ -120,7 +106,15 @@ def install_deps(session: nox.Session, constraint_groups: List[str], dependencie
 def tests(session: nox.Session, streamlit_version: str, tqdm_version: str) -> None:
     dependencies_to_install = build_dependencies_to_install_list(streamlit_version, tqdm_version, [".", "pytest", "freezegun"])
     install_deps(session, constraint_groups=["dev"], dependencies_to_install=dependencies_to_install)
-    session.run("pytest")
+    session.run("pytest", "-m", "not demo_app")
+
+
+@nox.session(python=None)
+@nox.parametrize(["python", "streamlit_version", "tqdm_version"], [PYTHON_ST_TQDM_VERSIONS[-1]])
+def test_demo_app(session: nox.Session, streamlit_version: str, tqdm_version: str) -> None:
+    dependencies_to_install = build_dependencies_to_install_list(streamlit_version, tqdm_version, [".", "pytest", "freezegun"])
+    install_deps(session, constraint_groups=["dev"], dependencies_to_install=dependencies_to_install)
+    session.run("pytest", "-m", "demo_app")
 
 
 @nox.session(python=None)
@@ -130,10 +124,11 @@ def coverage(session: nox.Session, streamlit_version: str, tqdm_version: str) ->
         streamlit_version, tqdm_version, [".", "pytest", "pytest-cov", "freezegun"]
     )
     install_deps(session, constraint_groups=["dev"], dependencies_to_install=dependencies_to_install)
-    session.run("pytest", "--cov-fail-under=15", "--cov=stqdm", "--cov-report=xml:codecov.xml")
+    session.run("pytest", "--cov-fail-under=15", "--cov=stqdm", "--cov-report=xml:codecov.xml", "-m", "not demo_app")
 
 
-@nox_poetry.session(python=None)
+@nox.session(python=None)
+@nox.parametrize(["python", "streamlit_version", "tqdm_version"], [PYTHON_ST_TQDM_VERSIONS[0]] + [PYTHON_ST_TQDM_VERSIONS[-1]])
 def isort(session: nox_poetry.Session):
     session.install("isort")
     session.run("isort", ".", "--check")
diff --git a/pyproject.toml b/pyproject.toml
index f40be5c..82eff95 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,6 +51,9 @@ skip_gitignore = true
 [tool.pytest.ini_options]
 addopts = "-ra"
 testpaths = ["tests"]
+markers = [
+    "app_test:Test a streamlit app directly with AppTest"
+]
 
 [tool.coverage.run]
 omit = [".nox/*"]
diff --git a/tests/test_streamlit_apps.py b/tests/test_streamlit_apps.py
index 25e3c68..04856bc 100644
--- a/tests/test_streamlit_apps.py
+++ b/tests/test_streamlit_apps.py
@@ -11,6 +11,8 @@
 import demo.src.utils
 from demo.src.demo_apps import simple_stqdm_in_main
 
+pytestmark = pytest.mark.demo_app
+
 
 def collect_block_elements(block: Block, should_take: Callable[[Element], bool]) -> list[Element]:
     children = block.children.values()