diff --git a/xwords4/android/app/src/debug/assets/startlog.sh b/xwords4/android/app/src/debug/assets/startlog.sh
new file mode 100755
index 000000000..fa5e1eb69
--- /dev/null
+++ b/xwords4/android/app/src/debug/assets/startlog.sh
@@ -0,0 +1,11 @@
+#!exec sh
+
+set -e -u
+
+APP=${1:-APP}
+
+mkdir -p /sdcard/${APP}_logs
+cd /sdcard/${APP}_logs
+
+FILENAME="$(date +%d-%m-%Y_%H%M%S).log"
+logcat -v time >> $FILENAME