diff --git a/ios/tools/prepRelease.sh b/ios/tools/prepRelease.sh
index cd522b15e6..0293f7d6f6 100755
--- a/ios/tools/prepRelease.sh
+++ b/ios/tools/prepRelease.sh
@@ -98,28 +98,35 @@ KEYMANAPP_IPA_DST="keyman-ios-${BUILD_NUMBER}.ipa"
 echo "Copying Keyman IPA ${KEYMANAPP_IPA} => ${UPLOAD_DIR}/${KEYMANAPP_IPA_DST}..."
 cp "${KEYMANAPP_IPA}" "${WORK_DIR}/${UPLOAD_DIR}/${KEYMANAPP_IPA_DST}"
 
-KEYMANAPP_SIM_IPA="build/Build/Products/Release-iphonesimulator/Keyman.app"
-KEYMANAPP_SIM_IPA_DST="keyman-ios-simulator-${BUILD_NUMBER}.app"
+KEYMANAPP_SIM_FOLDER="build/Build/Products/Release-iphonesimulator"
+KEYMANAPP_SIM_APP="$KEYMANAPP_SIM_FOLDER/Keyman.app"
+KEYMANAPP_SIM_APP_DST="keyman-ios-simulator-${BUILD_NUMBER}.app.zip"
 
-echo "Copying Keyman simulator artifact ${KEYMANAPP_SIM_IPA} => ${UPLOAD_DIR}/${KEYMANAPP_SIM_IPA_DST}..."
-cp "${KEYMANAPP_SIM_IPA}" "${WORK_DIR}/${UPLOAD_DIR}/${KEYMANAPP_SIM_IPA_DST}"
+echo "Zipping Keyman simulator artifact ${KEYMANAPP_SIM_APP} => ${UPLOAD_DIR}/${KEYMANAPP_SIM_APP_DST}..."
+cd "${KEYMANAPP_SIM_FOLDER}"
+zip -qrX "${WORK_DIR}/${UPLOAD_DIR}/${KEYMANAPP_SIM_APP_DST}" "Keyman.app"
+echo "${WORK_DIR}/${UPLOAD_DIR}/${KEYMANAPP_SIM_APP_DST}"
+cd $WORK_DIR
 
 #
 # FirstVoices app
 #
 
-if [ ${RELEASE_OEM_FIRSTVOICES} = true ]; then
+if [ "${RELEASE_OEM_FIRSTVOICES}" = true ]; then
   FIRSTVOICESAPP_IPA="../oem/firstvoices/ios/build/Build/Products/Release-iphoneos/FirstVoices.ipa"
   FIRSTVOICESAPP_IPA_DST="firstvoices-ios-${BUILD_NUMBER}.ipa"
 
   echo "Copying FirstVoices IPA ${FIRSTVOICESAPP_IPA} => ${UPLOAD_DIR}/${FIRSTVOICESAPP_IPA_DST}..."
   cp "${FIRSTVOICESAPP_IPA}" "${WORK_DIR}/${UPLOAD_DIR}/${FIRSTVOICESAPP_IPA_DST}"
 
-  FIRSTVOICESAPP_SIM_IPA="../oem/firstvoices/ios/build/Build/Products/Release-iphonesimulator/FirstVoices.app"
-  FIRSTVOICESAPP_SIM_IPA_DST="firstvoices-ios-simulator-${BUILD_NUMBER}.app"
+  FIRSTVOICESAPP_SIM_FOLDER="../oem/firstvoices/ios/build/Build/Products/Release-iphonesimulator/"
+  FIRSTVOICESAPP_SIM_APP="$FIRSTVOICESAPP_SIM_FOLDER/FirstVoices.app"
+  FIRSTVOICESAPP_SIM_APP_DST="firstvoices-ios-simulator-${BUILD_NUMBER}.app.zip"
 
-  echo "Copying FirstVoices IPA ${FIRSTVOICESAPP_SIM_IPA} => ${UPLOAD_DIR}/${FIRSTVOICESAPP_SIM_IPA_DST}..."
-  cp "${FIRSTVOICESAPP_SIM_IPA}" "${WORK_DIR}/${UPLOAD_DIR}/${FIRSTVOICESAPP_SIM_IPA_DST}"
+  echo "Zipping FirstVoices simulator artifact ${FIRSTVOICESAPP_SIM_APP} => ${UPLOAD_DIR}/${KEYMANAPP_SIM_APP_DST}..."
+  cd "${FIRSTVOICESAPP_SIM_FOLDER}"
+  zip -qrX "${WORK_DIR}/${UPLOAD_DIR}/${FIRSTVOICESAPP_SIM_APP_DST}" "FirstVoices.app"
+  cd $WORK_DIR
 fi
 
 #