diff --git a/apps/workflowengine/js/admin.js b/apps/workflowengine/js/admin.js
index ce85c8c008..ec921f8c22 100644
--- a/apps/workflowengine/js/admin.js
+++ b/apps/workflowengine/js/admin.js
@@ -242,7 +242,7 @@
 				// model change will trigger render
 				this.model.set({'checks': checks});
 			},
-			deleteCheck: function() {
+			deleteCheck: function(event) {
 				console.log(arguments);
 				var id = $(event.target.parentElement).data('id'),
 					checks = JSON.parse(JSON.stringify(this.model.get('checks')));
diff --git a/apps/workflowengine/js/requestuseragentplugin.js b/apps/workflowengine/js/requestuseragentplugin.js
new file mode 100644
index 0000000000..8413d52ac4
--- /dev/null
+++ b/apps/workflowengine/js/requestuseragentplugin.js
@@ -0,0 +1,118 @@
+/**
+ * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+(function() {
+
+	OCA.WorkflowEngine = OCA.WorkflowEngine || {};
+	OCA.WorkflowEngine.Plugins = OCA.WorkflowEngine.Plugins || {};
+
+	OCA.WorkflowEngine.Plugins.RequestUserAgentPlugin = {
+		predefinedValues: ['android', 'ios', 'desktop'],
+		getCheck: function() {
+			return {
+				'class': 'OCA\\WorkflowEngine\\Check\\RequestUserAgent',
+				'name': t('workflowengine', 'Request user agent'),
+				'operators': [
+					{'operator': 'is', 'name': t('workflowengine', 'is')},
+					{'operator': '!is', 'name': t('workflowengine', 'is not')},
+					{'operator': 'matches', 'name': t('workflowengine', 'matches')},
+					{'operator': '!matches', 'name': t('workflowengine', 'does not match')}
+				]
+			};
+		},
+		render: function(element, check) {
+			if (check['class'] !== 'OCA\\WorkflowEngine\\Check\\RequestUserAgent') {
+				return;
+			}
+
+			var placeholder = t('workflowengine', 'Mozilla/5.0 User Agent');
+
+			if (check['operator'] === 'matches' || check['operator'] === '!matches') {
+				placeholder = t('workflowengine', '/^Mozilla\\/5\\.0 (.?)$/i');
+			}
+
+			$(element).css('width', '250px')
+				.attr('placeholder', placeholder)
+				.attr('title', t('workflowengine', 'Example: {placeholder}', {placeholder: placeholder}))
+				.addClass('has-tooltip')
+				.tooltip({
+					placement: 'bottom'
+				});
+
+			if (check['operator'] === 'matches' || check['operator'] === '!matches') {
+				if (this._validateRegex(check['value'])) {
+					$(element).removeClass('invalid-input');
+				} else {
+					$(element).addClass('invalid-input');
+				}
+			} else {
+				var self = this,
+					data = [
+					{
+						text: t('workflowengine', 'Sync clients'),
+						children: [
+							{id: 'android', text: t('workflowengine', 'Android client')},
+							{id: 'ios', text: t('workflowengine', 'iOS client')},
+							{id: 'desktop', text: t('workflowengine', 'Desktop client')}
+						]
+					}
+				];
+				if (this.predefinedValues.indexOf(check['value']) === -1) {
+					data.unshift({
+						id: check['value'],
+						text: check['value']
+					})
+				}
+
+				$(element).select2({
+					data: data,
+					createSearchChoice: function(term) {
+						if (self.predefinedValues.indexOf(check['value']) === -1) {
+							return {
+								id: term,
+								text: term
+							};
+						}
+					},
+					id: function(element) {
+						return element.id;
+					},
+					formatResult: function (tag) {
+						return tag.text;
+					},
+					formatSelection: function (tag) {
+						return tag.text;
+					},
+					escapeMarkup: function(m) {
+						return m;
+					}
+				})
+			}
+		},
+
+		_validateRegex: function(string) {
+			var regexRegex = /^\/(.*)\/([gui]{0,3})$/,
+				result = regexRegex.exec(string);
+			return result !== null;
+		}
+	};
+})();
+
+OC.Plugins.register('OCA.WorkflowEngine.CheckPlugins', OCA.WorkflowEngine.Plugins.RequestUserAgentPlugin);
diff --git a/apps/workflowengine/lib/AppInfo/Application.php b/apps/workflowengine/lib/AppInfo/Application.php
index c1dc65fe81..82a07aa59e 100644
--- a/apps/workflowengine/lib/AppInfo/Application.php
+++ b/apps/workflowengine/lib/AppInfo/Application.php
@@ -58,6 +58,7 @@ class Application extends \OCP\AppFramework\App {
 					'filemimetypeplugin',
 					'filesizeplugin',
 					'filesystemtagsplugin',
+					'requestuseragentplugin',
 					'usergroupmembershipplugin',
 				]);
 			},
diff --git a/apps/workflowengine/lib/Check/RequestUserAgent.php b/apps/workflowengine/lib/Check/RequestUserAgent.php
new file mode 100644
index 0000000000..241b19136a
--- /dev/null
+++ b/apps/workflowengine/lib/Check/RequestUserAgent.php
@@ -0,0 +1,71 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\WorkflowEngine\Check;
+
+
+use OCP\IRequest;
+
+class RequestUserAgent extends AbstractStringCheck {
+
+	/** @var IRequest */
+	protected $request;
+
+	/**
+	 * @param IRequest $request
+	 */
+	public function __construct(IRequest $request) {
+		$this->request = $request;
+	}
+
+	/**
+	 * @param string $operator
+	 * @param string $value
+	 * @return bool
+	 */
+	public function executeCheck($operator, $value)  {
+		$actualValue = $this->getActualValue();
+		if (in_array($operator, ['is', '!is'])) {
+			switch ($value) {
+				case 'android':
+					$operator = $operator === 'is' ? 'matches' : '!matches';
+					$value = IRequest::USER_AGENT_CLIENT_ANDROID;
+					break;
+				case 'ios':
+					$operator = $operator === 'is' ? 'matches' : '!matches';
+					$value = IRequest::USER_AGENT_CLIENT_IOS;
+					break;
+				case 'desktop':
+					$operator = $operator === 'is' ? 'matches' : '!matches';
+					$value = IRequest::USER_AGENT_CLIENT_DESKTOP;
+					break;
+			}
+		}
+		return $this->executeStringCheck($operator, $value, $actualValue);
+	}
+
+	/**
+	 * @return string
+	 */
+	protected function getActualValue() {
+		return (string) $this->request->getHeader('User-Agent');
+	}
+}