diff --git a/cmd/tomatick/FyneApp.toml b/cmd/tomatick/FyneApp.toml
index 295239a..e486ddf 100644
--- a/cmd/tomatick/FyneApp.toml
+++ b/cmd/tomatick/FyneApp.toml
@@ -1,7 +1,7 @@
 [Details]
 Name = "Tomatick"
 ID = "us.tomatick"
-Version = "2.0.0"
+Version = "2.0.1"
 Build = 1
 Icon = "Icon.png"
 
diff --git a/internal/version/version.go b/internal/version/version.go
index c4fcce5..429ab94 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -1,7 +1,7 @@
 package version
 
 // Version is the single source of truth for the app version.
-const Version = "2.0.0"
+const Version = "2.0.1"
 
 const (
 	AppName  = "Tomatick"
diff --git a/scripts/measure-tray-memory.sh b/scripts/measure-tray-memory.sh
new file mode 100755
index 0000000..d14312a
--- /dev/null
+++ b/scripts/measure-tray-memory.sh
@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+# measure-tray-memory.sh — regression guard for the menu-bar tray leak (#15, #16, #20).
+#
+# macOS only, and manual: it needs a live GUI session (the tray only renders
+# inside one), so it cannot run on a CI runner. Run it by hand on a Mac after
+# any change to internal/ui/tray.go, internal/ui/ui.go, or internal/ui/pool_darwin.go,
+# and before cutting a release.
+#
+# What it does: builds ./tomatick from the current checkout, launches it detached
+# in the current GUI session, samples RSS with `footprint` every 30s for 10
+# minutes while idle (no timer running), then kills it.
+#
+# Pass/fail threshold, from PR #16's own before/after measurement (idle, red
+# theme, macOS 26.6.2):
+#   - buggy (Tomatick 2.0.0, before #16):  36 MB -> 53 MB over 10 min (~28 KB/s)
+#   - fixed (this repo, after #16):        33 MB -> 33 MB over 10 min (~0.08 MB heap growth)
+# A fixed build should show well under 5 MB of growth over the 10-minute idle
+# window. 5-50 MB points at a partial regression (icon or title churn no longer
+# fully pooled); 50+ MB over 10 min is the pre-#16 leak back in force.
+#
+# This script only checks idle growth. A running timer changes the title every
+# tick too and was NOT verified in #16 -- if you need that case, start a timer
+# from the tray after launch and re-run the sampling loop by hand.
+set -euo pipefail
+
+if [ "$(uname -s)" != "Darwin" ]; then
+  echo "measure-tray-memory.sh only runs on macOS." >&2
+  exit 1
+fi
+
+cd "$(dirname "$0")/.."
+
+echo "Building ./tomatick from the current checkout..."
+go build -o tomatick ./cmd/tomatick
+
+./tomatick &
+pid=$!
+trap 'kill "$pid" 2>/dev/null || true' EXIT
+
+echo "Started tomatick, pid $pid. Sampling footprint every 30s for 10 minutes (idle, no timer)."
+echo "elapsed_s	footprint_mb"
+
+start=$(date +%s)
+for i in $(seq 1 20); do
+  sleep 30
+  elapsed=$(( $(date +%s) - start ))
+  mb=$(footprint "$pid" 2>/dev/null | awk '/Physical footprint:/ {print $3}')
+  echo "${elapsed}	${mb}"
+done
+
+kill "$pid" 2>/dev/null || true
+echo "Done. Compare the first and last footprint_mb column against the thresholds above."