diff --git a/modules/applications/activitywatch/darwin.nix b/modules/applications/activitywatch/darwin.nix
new file mode 100644
index 0000000..98e0ab5
--- /dev/null
+++ b/modules/applications/activitywatch/darwin.nix
@@ -0,0 +1,8 @@
+{
+  homebrew.casks = [ "activitywatch" ];
+
+  launchd.agents.activitywatch = {
+    command = "/usr/bin/open -gja ActivityWatch";
+    serviceConfig.RunAtLoad = true;
+  };
+}
diff --git a/modules/applications/activitywatch/home/nixos.nix b/modules/applications/activitywatch/home/nixos.nix
new file mode 100644
index 0000000..5cdc92d
--- /dev/null
+++ b/modules/applications/activitywatch/home/nixos.nix
@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+{
+  services.activitywatch = {
+    enable = true;
+
+    watchers.aw-awatcher = {
+      package = pkgs.awatcher;
+      executable = "awatcher";
+    };
+  };
+}
diff --git a/modules/applications/activitywatch/meta.nix b/modules/applications/activitywatch/meta.nix
new file mode 100644
index 0000000..28d64bb
--- /dev/null
+++ b/modules/applications/activitywatch/meta.nix
@@ -0,0 +1,3 @@
+{
+  description = "ActivityWatch automated time tracker";
+}
diff --git a/modules/profiles/README.md b/modules/profiles/README.md
index 0306699..45e8803 100644
--- a/modules/profiles/README.md
+++ b/modules/profiles/README.md
@@ -70,6 +70,10 @@ Handy's own shortcut bindings are disabled on NixOS so it does not monitor
 keyboard events under Wayland. Handy uses the Homebrew cask and starts at login
 on macOS.
 
+`workload.personal` provides ActivityWatch for local activity tracking. On
+NixOS, its server and Wayland-compatible watcher run as Home Manager user
+services. On macOS, the Homebrew cask starts at login.
+
 On NixOS, `workload.game` provides Steam with Valve Proton and Proton-GE,
 Protontricks, Wayland-compatible Steam Input, GameMode, Gamescope, and MangoHud.
 Enabling Steam also activates the 32-bit graphics and PipeWire support required
diff --git a/modules/profiles/workload/personal/meta.nix b/modules/profiles/workload/personal/meta.nix
index 4952191..25d18a7 100644
--- a/modules/profiles/workload/personal/meta.nix
+++ b/modules/profiles/workload/personal/meta.nix
@@ -3,6 +3,7 @@
 
   includes = [
     "applications.1password"
+    "applications.activitywatch"
     "applications.chrome"
     "applications.discord"
     "applications.gnome-text-editor"