diff --git a/css/dashboard.css b/css/dashboard.css
index 91ba618..8f12c4c 100644
--- a/css/dashboard.css
+++ b/css/dashboard.css
@@ -419,6 +419,7 @@ input[type=range]::-moz-range-thumb {
 .icon.air_filter:before { content: "\F0D43"; }
 .icon.air_purifier:before { content: "\F0D44"; }
 .icon.alarm_snooze:before { content: "\F068E"; }
+.icon.alert:before { content: "\F0026"; }
 .icon.alpha_b:before { content: "\F0AEF"; }
 .icon.alpha_b_box:before { content: "\F0B09"; }
 .icon.arrow_down:before { content: "\F0045"; }
diff --git a/js/beestat/platform.js b/js/beestat/platform.js
new file mode 100644
index 0000000..42eec92
--- /dev/null
+++ b/js/beestat/platform.js
@@ -0,0 +1,4 @@
+beestat.platform = function() {
+  const url_parameters = new URLSearchParams(window.location.search);
+  return url_parameters.get('platform');
+};
diff --git a/js/component/header.js b/js/component/header.js
index e5fbf81..2baa458 100644
--- a/js/component/header.js
+++ b/js/component/header.js
@@ -192,9 +192,7 @@ beestat.component.header.prototype.decorate_ = function(parent) {
       (new beestat.layer.settings()).render();
     }));
 
-  const url_parameters = new URLSearchParams(window.location.search);
-  const platform = url_parameters.get('platform');
-  if (platform === 'ios' || platform === 'android') {
+  if (beestat.platform() === 'ios' || beestat.platform() === 'android') {
     menu.add_menu_item(new beestat.component.menu_item()
       .set_text('Open Ecobee App')
       .set_icon('open_in_app')
diff --git a/js/component/modal/download_data.js b/js/component/modal/download_data.js
index a045479..5fd08e4 100644
--- a/js/component/modal/download_data.js
+++ b/js/component/modal/download_data.js
@@ -20,6 +20,7 @@ beestat.component.modal.download_data.prototype.decorate_contents_ = function(pa
   parent.appendChild($.createElement('p').innerHTML('Beestat stores, at a minimum, the past year of raw thermostat logs. Select a date range to download.'));
   this.decorate_range_(parent);
   this.decorate_presets_(parent);
+  this.decorate_android_ios_disabled_(parent);
   this.decorate_error_(parent);
 
   // Fire off this event once to get everything updated.
@@ -201,6 +202,25 @@ beestat.component.modal.download_data.prototype.decorate_presets_ = function(par
   tile_group.render(column);
 };
 
+/**
+ * Decorate the disabled notice for Android and iOS.
+ *
+ * @param {rocket.Elements} parent
+ */
+beestat.component.modal.download_data.prototype.decorate_android_ios_disabled_ = function(parent) {
+  if (beestat.platform() === 'ios' || beestat.platform() === 'android') {
+    new beestat.component.tile()
+      .set_icon('alert')
+      .set_size('large')
+      .set_display('block')
+      .set_shadow(false)
+      .set_background_color(beestat.style.color.red.base)
+      .set_text('Download Data is only available when using beestat directly in your browser. Sorry! :(')
+      .set_text_color('#fff')
+      .render(parent);
+  }
+};
+
 /**
  * Decorate the error area.
  *
@@ -253,32 +273,39 @@ beestat.component.modal.download_data.prototype.get_buttons_ = function() {
     });
 
   var save = new beestat.component.tile()
-    .set_background_color(beestat.style.color.green.base)
-    .set_background_hover_color(beestat.style.color.green.light)
     .set_text_color('#fff')
-    .set_text('Download')
-    .addEventListener('click', function() {
-      var range_begin;
-      var range_end;
-      if (self.state_.range_end.isBefore(self.state_.range_begin) === true) {
-        range_begin = self.state_.range_end;
-        range_end = self.state_.range_begin;
-      } else {
-        range_begin = self.state_.range_begin;
-        range_end = self.state_.range_end;
-      }
+    .set_text('Download');
 
-      var download_arguments = {
-        'thermostat_id': beestat.setting('thermostat_id'),
-        'download_begin': range_begin.format(),
-        'download_end': range_end.hour(23).minute(55)
-          .format()
-      };
+  if (beestat.platform() === 'ios' || beestat.platform() === 'android') {
+    save
+      .set_background_color(beestat.style.color.gray.light);
+  } else {
+    save
+      .set_background_color(beestat.style.color.green.base)
+      .set_background_hover_color(beestat.style.color.green.light)
+      .addEventListener('click', function() {
+        var range_begin;
+        var range_end;
+        if (self.state_.range_end.isBefore(self.state_.range_begin) === true) {
+          range_begin = self.state_.range_end;
+          range_end = self.state_.range_begin;
+        } else {
+          range_begin = self.state_.range_begin;
+          range_end = self.state_.range_end;
+        }
 
-      window.location.href = '/api/?resource=runtime&method=download&arguments=' + encodeURIComponent(JSON.stringify(download_arguments)) + '&api_key=' + window.beestat_api_key_local;
+        var download_arguments = {
+          'thermostat_id': beestat.setting('thermostat_id'),
+          'download_begin': range_begin.format(),
+          'download_end': range_end.hour(23).minute(55)
+            .format()
+        };
 
-      self.dispose();
-    });
+        window.location.href = '/api/?resource=runtime&method=download&arguments=' + encodeURIComponent(JSON.stringify(download_arguments)) + '&api_key=' + window.beestat_api_key_local;
+
+        self.dispose();
+      });
+  }
 
   return [
     cancel,
diff --git a/js/js.php b/js/js.php
index 89a6e51..4407c01 100755
--- a/js/js.php
+++ b/js/js.php
@@ -49,6 +49,7 @@ if($setting->get('environment') === 'dev' || $setting->get('environment') === 'd
   echo '<script src="/js/beestat/affiliate.js"></script>' . PHP_EOL;
   echo '<script src="/js/beestat/date.js"></script>' . PHP_EOL;
   echo '<script src="/js/beestat/math.js"></script>' . PHP_EOL;
+  echo '<script src="/js/beestat/platform.js"></script>' . PHP_EOL;
 
   // Layer
   echo '<script src="/js/layer.js"></script>' . PHP_EOL;