diff --git a/scripts/simapp/env b/scripts/simapp/env
index d12804a0..8fb48d8e 100644
--- a/scripts/simapp/env
+++ b/scripts/simapp/env
@@ -2,3 +2,4 @@
 REPOSITORY="interchainio/simapp"
 VERSION="v0.42.1"
 CONTAINER_NAME="simapp"
+CONTAINER_NAME_SLOW="simapp-slow"
diff --git a/scripts/simapp/start_slow.sh b/scripts/simapp/start_slow.sh
new file mode 100755
index 00000000..4a0f6b3b
--- /dev/null
+++ b/scripts/simapp/start_slow.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+set -o errexit -o nounset -o pipefail
+command -v shellcheck >/dev/null && shellcheck "$0"
+
+# Please keep this in sync with the Ports overview in HACKING.md
+TENDERMINT_PORT_GUEST="26657"
+TENDERMINT_PORT_HOST="26660"
+API_PORT_GUEST="1317"
+API_PORT_HOST="1320"
+
+SCRIPT_DIR="$(realpath "$(dirname "$0")")"
+# shellcheck source=./env
+# shellcheck disable=SC1091
+source "$SCRIPT_DIR"/env
+
+TMP_DIR=$(mktemp -d "${TMPDIR:-/tmp}/simapp_slow.XXXXXXXXX")
+chmod 777 "$TMP_DIR"
+echo "Using temporary dir $TMP_DIR"
+SIMD_LOGFILE="$TMP_DIR/simd_slow.log"
+
+# Use a fresh volume for every start
+docker volume rm -f simapp_slow_data
+
+docker run --rm \
+  --name "$CONTAINER_NAME_SLOW" \
+  -p "$TENDERMINT_PORT_HOST":"$TENDERMINT_PORT_GUEST" \
+  -p "$API_PORT_HOST":"$API_PORT_GUEST" \
+  --mount type=bind,source="$SCRIPT_DIR/template_slow",target=/template \
+  --mount type=volume,source=simapp_slow_data,target=/root \
+  "$REPOSITORY:$VERSION" \
+  /template/run_simd.sh \
+  >"$SIMD_LOGFILE" 2>&1 &
+
+echo "slow simd running on http://localhost:$TENDERMINT_PORT_HOST and logging into $SIMD_LOGFILE"
+
+if [ -n "${CI:-}" ]; then
+  # Give process some time to come alive. No idea why this helps. Needed for CI.
+  sleep 0.5
+
+  # Follow the logs in CI's background job
+  tail -f "$SIMD_LOGFILE"
+fi
diff --git a/scripts/simapp/stop_slow.sh b/scripts/simapp/stop_slow.sh
new file mode 100755
index 00000000..4ad190e4
--- /dev/null
+++ b/scripts/simapp/stop_slow.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -o errexit -o nounset -o pipefail
+command -v shellcheck >/dev/null && shellcheck "$0"
+
+SCRIPT_DIR="$(realpath "$(dirname "$0")")"
+# shellcheck source=./env
+# shellcheck disable=SC1091
+source "$SCRIPT_DIR"/env
+
+echo "Killing slow simapp container..."
+docker container kill "$CONTAINER_NAME_SLOW"