diff --git a/tests/test_double_tap.py b/tests/test_double_tap.py
new file mode 100644
index 0000000..8294c66
--- /dev/null
+++ b/tests/test_double_tap.py
@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tests.fakes import FakeDriver
+
+
+def _connected(driver: FakeDriver) -> DeviceManager:
+    manager = DeviceManager()
+    manager.register_device("phone", lambda: driver)
+    manager.connect("phone", max_retries=1)
+    return manager
+
+
+def test_double_tap_disabled_passes_exact(monkeypatch):
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")
+    from tools.double_tap import double_tap
+
+    driver = FakeDriver()
+    res = double_tap(50, 60, interval_ms=90, manager=_connected(driver))
+    assert driver.calls[-1] == ("double_tap", (50, 60, 90))
+    assert res["action"] == "double_tap"
+
+
+def test_double_tap_enabled_jitters_within_radius(monkeypatch):
+    import random
+
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")
+    from tools.humanize import set_rng
+    from tools.double_tap import double_tap
+
+    set_rng(random.Random(8))
+    try:
+        driver = FakeDriver()
+        double_tap(50, 60, manager=_connected(driver))
+    finally:
+        set_rng(None)
+    px, py, _ = driver.calls[-1][1]
+    assert abs(px - 50) <= 5.0 and abs(py - 60) <= 5.0
diff --git a/tools/double_tap.py b/tools/double_tap.py
new file mode 100644
index 0000000..b9ce09f
--- /dev/null
+++ b/tools/double_tap.py
@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tools._device import get_driver
+from tools.humanize import get_rng, jitter_duration, jitter_point, load_humanize_config
+
+
+def double_tap(
+    x: float,
+    y: float,
+    *,
+    interval_ms: int = 80,
+    device_id: str | None = None,
+    manager: DeviceManager | None = None,
+) -> dict[str, object]:
+    cfg = load_humanize_config()
+    px, py = x, y
+    interval = interval_ms
+    if cfg.enabled:
+        rng = get_rng()
+        px, py = jitter_point(x, y, radius=cfg.tap_radius_px, rng=rng)
+        interval = jitter_duration(interval_ms, spread=cfg.duration_spread, rng=rng)
+    get_driver(device_id, manager=manager).double_tap(px, py, interval)
+    return {
+        "ok": True,
+        "action": "double_tap",
+        "x": px,
+        "y": py,
+        "interval_ms": interval,
+    }