diff --git a/README.md b/README.md
index 088f3dc..4eae4d2 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Sets up a venv for the Python deps (Pillow, numpy, pytesseract) and checks for t
 ./run.sh
 ```
 
-Uses the venv from `install.sh` if one exists, otherwise falls back to system `python3`. GTK apps with this app ID are single-instance, if a run gets killed uncleanly it can leave a zombie registered on D-Bus and silently no-op the next launch. If `./run.sh` seems to do nothing, `pgrep -af ironnest_assist` and kill any stragglers first.
+Uses the venv from `install.sh` if one exists, otherwise falls back to system `python3`. GTK apps with this app ID are single-instance, if a run gets killed uncleanly it can leave a zombie registered on D-Bus and silently no-op the next launch. If `./run.sh` seems to do nothing, `pgrep -af fenigma` and kill any stragglers first.
 
 ## Stack
 
diff --git a/run.sh b/run.sh
index 2b2e33e..acdd820 100755
--- a/run.sh
+++ b/run.sh
@@ -6,4 +6,4 @@ cd "$(dirname "${BASH_SOURCE[0]}")"
 PYTHON=python3
 [ -x .venv/bin/python3 ] && PYTHON=.venv/bin/python3
 
-exec env PYTHONPATH=src "$PYTHON" -m ironnest_assist.app
+exec env PYTHONPATH=src "$PYTHON" -m fenigma.app
diff --git a/src/fenigma/__init__.py b/src/fenigma/__init__.py
new file mode 100644
index 0000000..0c75069
--- /dev/null
+++ b/src/fenigma/__init__.py
@@ -0,0 +1 @@
+"""FeNigma: screen-reading helper for IRON NEST: Heavy Turret Simulator."""
diff --git a/src/ironnest_assist/app.py b/src/fenigma/app.py
similarity index 99%
rename from src/ironnest_assist/app.py
rename to src/fenigma/app.py
index ccd557d..133d317 100644
--- a/src/ironnest_assist/app.py
+++ b/src/fenigma/app.py
@@ -1,4 +1,4 @@
-"""IronNest Assist — GTK4/libadwaita app entry point.
+"""FeNigma: GTK4/libadwaita app entry point.
 
 Layout: a row of category dropdowns on top (+ a universal clipboard-fetch
 button), the map/grid filling the center. Coordinates can be set by exact
@@ -31,7 +31,7 @@ from .grid_widget import GridCanvas  # noqa: E402
 from .models import Board, Location, Target, TargetType  # noqa: E402
 from .shells import Shell  # noqa: E402
 
-APP_ID = "eu.dominik-roth.IronNestAssist"
+APP_ID = "eu.dominik-roth.FeNigma"
 
 
 def _apply_location(obj, location: Location) -> None:
@@ -147,7 +147,7 @@ def _install_css() -> None:
 
 class MainWindow(Adw.ApplicationWindow):
     def __init__(self, app: Adw.Application) -> None:
-        super().__init__(application=app, title="IronNest Assist")
+        super().__init__(application=app, title="FeNigma")
         self.set_default_size(1100, 750)
         _install_css()
 
@@ -861,7 +861,7 @@ class MainWindow(Adw.ApplicationWindow):
         rebuild()
 
 
-class IronNestApp(Adw.Application):
+class FeNigmaApp(Adw.Application):
     def __init__(self) -> None:
         super().__init__(application_id=APP_ID)
 
@@ -873,7 +873,7 @@ class IronNestApp(Adw.Application):
 
 
 def main() -> int:
-    app = IronNestApp()
+    app = FeNigmaApp()
     return app.run(None)
 
 
diff --git a/src/ironnest_assist/ballistics.py b/src/fenigma/ballistics.py
similarity index 100%
rename from src/ironnest_assist/ballistics.py
rename to src/fenigma/ballistics.py
diff --git a/src/ironnest_assist/coord_dialog.py b/src/fenigma/coord_dialog.py
similarity index 100%
rename from src/ironnest_assist/coord_dialog.py
rename to src/fenigma/coord_dialog.py
diff --git a/src/ironnest_assist/firing_panel.py b/src/fenigma/firing_panel.py
similarity index 100%
rename from src/ironnest_assist/firing_panel.py
rename to src/fenigma/firing_panel.py
diff --git a/src/ironnest_assist/grid_widget.py b/src/fenigma/grid_widget.py
similarity index 100%
rename from src/ironnest_assist/grid_widget.py
rename to src/fenigma/grid_widget.py
diff --git a/src/ironnest_assist/models.py b/src/fenigma/models.py
similarity index 100%
rename from src/ironnest_assist/models.py
rename to src/fenigma/models.py
diff --git a/src/ironnest_assist/ocr.py b/src/fenigma/ocr.py
similarity index 100%
rename from src/ironnest_assist/ocr.py
rename to src/fenigma/ocr.py
diff --git a/src/ironnest_assist/shells.py b/src/fenigma/shells.py
similarity index 100%
rename from src/ironnest_assist/shells.py
rename to src/fenigma/shells.py
diff --git a/src/ironnest_assist/solver.py b/src/fenigma/solver.py
similarity index 100%
rename from src/ironnest_assist/solver.py
rename to src/fenigma/solver.py
diff --git a/src/ironnest_assist/__init__.py b/src/ironnest_assist/__init__.py
deleted file mode 100644
index 450ac18..0000000
--- a/src/ironnest_assist/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-"""ironnest-assist: screen-reading helper for IRON NEST: Heavy Turret Simulator."""