diff --git a/apps/phystrax/interface.html b/apps/phystrax/interface.html
index 9b2e3890b..92dad7d0b 100644
--- a/apps/phystrax/interface.html
+++ b/apps/phystrax/interface.html
@@ -9,43 +9,34 @@
     <script>
 var dataElement = document.getElementById("data");
 
-function saveHeartRateData() {
-  Util.showModal("Saving...");
-  var csvContent = "Timestamp,Heart Rate(bpm),HRV(ms)\n";
-  // Assuming logData contains the heart rate data
-  logData.forEach(entry => {
-    csvContent += `${entry.timestamp},${entry.heartRate},${entry.hrv}\n`;
-  });
-  var fileName = "heart_rate_data.csv"; // Set the desired file name
-  Util.saveCSV(fileName, csvContent, function(success) {
-    if (success) {
-      dataElement.innerHTML = "<p>Heart rate data saved successfully</p>";
-      Util.hideModal(); // Move hideModal() call inside the success callback
-    } else {
-      dataElement.innerHTML = "<p>Error saving heart rate data</p>";
-      Util.hideModal(); // Move hideModal() call inside the error callback
-    }
-  });
+function displayOptions() {
+  // Display options to save the heart rate data file
+  dataElement.innerHTML = `
+    <button class="btn btn-primary" onclick="saveHeartRateData()">Save</button>
+  `;
 }
 
-function deleteHeartRateData() {
-  Util.showModal("Deleting...");
-  var fileName = "heart_rate_data.csv"; // Set the desired file name
-  Util.eraseStorageFile(fileName, function(success) {
-    if (success) {
-      dataElement.innerHTML = "<p>Heart rate data deleted successfully</p>";
-    } else {
-      dataElement.innerHTML = "<p>Error deleting heart rate data</p>";
-    }
-    Util.hideModal(); // Always hide the modal after the operation completes
+function saveHeartRateData() {
+  Util.showModal("Saving...");
+  var fileName = "heart_rate_data.csv"; // Set the file name to save
+  // Read the heart rate data from the watch's storage
+  Util.readStorageFile(fileName, function(data) {
+    // Save the data to the device through app loader
+    Util.saveFileToDevice(fileName, data, function(success) {
+      if (success) {
+        dataElement.innerHTML = "<p>Heart rate data saved successfully</p>";
+      } else {
+        dataElement.innerHTML = "<p>Error saving heart rate data</p>";
+      }
+      Util.hideModal();
+    });
   });
 }
 
 // Called when app starts
 function onInit() {
-  // Only show options to save or delete data
-  saveHeartRateData();
-  deleteHeartRateData();
+  // Display option to save data
+  displayOptions();
 }
 
     </script>