diff --git a/tools/run_on_app.py b/tools/run_on_app.py
index 809a1fe..4125f84 100755
--- a/tools/run_on_app.py
+++ b/tools/run_on_app.py
@@ -565,6 +565,13 @@
   if options.r8_flags:
     args.extend(options.r8_flags.split(' '))
 
+  # Feature jars.
+  features = values['features'] if 'features' in values else []
+  for i, feature in enumerate(features, start=1):
+    feature_out = os.path.join(outdir, 'feature-%d.zip' % i)
+    for feature_jar in feature['inputs']:
+      args.extend(['--feature', feature_jar, feature_out])
+
   args.extend(inputs)
 
   t0 = time.time()