diff --git a/tests/helper/Android.bp b/tests/helper/Android.bp
index f8dcef7..6d769e6 100644
--- a/tests/helper/Android.bp
+++ b/tests/helper/Android.bp
@@ -9,8 +9,14 @@
 }
 
 java_library_static {
+    name: "MicrodroidTestHelper",
+    srcs: ["src/java/com/android/microdroid/test/common/*.java"],
+    host_supported: true,
+}
+
+java_library_static {
     name: "MicrodroidDeviceTestHelper",
-    srcs: ["src/java/com/android/microdroid/**/*.java"],
+    srcs: ["src/java/com/android/microdroid/test/*.java"],
     static_libs: [
         "androidx.test.runner",
         "androidx.test.ext.junit",
diff --git a/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java b/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java
new file mode 100644
index 0000000..c12b07d
--- /dev/null
+++ b/tests/helper/src/java/com/android/microdroid/test/common/MetricsProcessor.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.microdroid.test.common;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/** This class processes the metrics for both device tests and host tests. */
+public final class MetricsProcessor {
+    private final String mPrefix;
+
+    public MetricsProcessor(String prefix) {
+        mPrefix = prefix;
+    }
+
+    /**
+     * Computes the min, max, average and standard deviation of the given metrics and saves them in
+     * a {@link Map} with the corresponding keys equal to [mPrefix + name +
+     * _[min|max|average|stdev]_ + unit].
+     */
+    public Map<String, Double> computeStats(List<Double> metrics, String name, String unit) {
+        double sum = 0;
+        double min = Double.MAX_VALUE;
+        double max = Double.MIN_VALUE;
+        for (double d : metrics) {
+            sum += d;
+            if (min > d) min = d;
+            if (max < d) max = d;
+        }
+        double avg = sum / metrics.size();
+        double sqSum = 0;
+        for (double d : metrics) {
+            sqSum += (d - avg) * (d - avg);
+        }
+        double stdDev = Math.sqrt(sqSum / (metrics.size() - 1));
+
+        Map<String, Double> stats = new HashMap<String, Double>();
+        String prefix = mPrefix + name;
+        stats.put(prefix + "_min_" + unit, min);
+        stats.put(prefix + "_max_" + unit, max);
+        stats.put(prefix + "_average_" + unit, avg);
+        stats.put(prefix + "_stdev_" + unit, stdDev);
+        return stats;
+    }
+}