diff --git a/Flow.Launcher.Plugin.FendCalculator.csproj b/Flow.Launcher.Plugin.FendCalculator.csproj
index d640600..a115492 100644
--- a/Flow.Launcher.Plugin.FendCalculator.csproj
+++ b/Flow.Launcher.Plugin.FendCalculator.csproj
@@ -13,6 +13,11 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
     <DebugSymbols>false</DebugSymbols>
     <DebugType>None</DebugType>
diff --git a/Main.cs b/Main.cs
index 2fa43ff..2e36d4c 100644
--- a/Main.cs
+++ b/Main.cs
@@ -1,18 +1,29 @@
 using System.Runtime.InteropServices;
 using System.Diagnostics;
 using System.Windows;
+using System.Windows.Controls;
 using System.Text;
 using System.Collections.Generic;
+using Flow.Launcher.Plugin.FendCalculator.ViewModels;
+using Flow.Launcher.Plugin.FendCalculator.Views;
 
 namespace Flow.Launcher.Plugin.FendCalculator
 {
-    public class FendCalculator : IPlugin
+    public class FendCalculator : IPlugin, ISettingProvider
     {
         private PluginInitContext _context;
+        private Settings _settings;
+        private static SettingsViewModel _viewModel;
 
         public void Init(PluginInitContext context)
         {
             _context = context;
+            _settings = context.API.LoadSettingJsonStorage<Settings>();
+            _viewModel = new SettingsViewModel(_settings);
+            if (string.IsNullOrEmpty(_settings.FendCommand))
+            {
+                _settings.FendCommand = "fend";
+            }
         }
 
         public List<Result> Query(Query query)
@@ -31,39 +42,56 @@ public List<Result> Query(Query query)
                 UseShellExecute = false,
                 RedirectStandardOutput = true,
                 StandardOutputEncoding = Encoding.UTF8,
-                FileName = "fend",
+                FileName = $"{_settings.FendCommand}",
                 Arguments = $"\"{query.Search}\""
             };
-            Process process = Process.Start(startInfo);
-
-            string output = process.StandardOutput.ReadToEnd().TrimEnd();
-            if (process.ExitCode == 0 && !string.IsNullOrEmpty(output))
+            try
             {
-                var result = new Result
+                Process process = Process.Start(startInfo);
+                string output = process.StandardOutput.ReadToEnd().TrimEnd();
+                if (process.ExitCode == 0 && !string.IsNullOrEmpty(output))
                 {
-                    Title = output,
-                    SubTitle = "Copy result to clipboard",
-                    IcoPath = "Images/calculator.png",
-                    Score = 300,
-                    CopyText = output,
-                    Action = c =>
+                    var result = new Result
                     {
-                        try
+                        Title = output,
+                        SubTitle = "Copy result to clipboard",
+                        IcoPath = "Images/calculator.png",
+                        Score = 300,
+                        CopyText = output,
+                        Action = c =>
                         {
-                            Clipboard.SetDataObject(output);
-                            return true;
+                            try
+                            {
+                                Clipboard.SetDataObject(output);
+                                return true;
+                            }
+                            catch (ExternalException)
+                            {
+                                MessageBox.Show("Copy failed, please try later");
+                                return false;
+                            }
                         }
-                        catch (ExternalException)
-                        {
-                            MessageBox.Show("Copy failed, please try later");
-                            return false;
-                        }
-                    }
-                };
-                results.Add(result);
+                    };
+                    results.Add(result);
+                }
+            }
+            catch (ExternalException)
+            {
+                results.Add(new Result
+                {
+                    Title = "Error",
+                    SubTitle = "fend command error. Check installation path or fend config file",
+                    IcoPath = "Images/calculator.png",
+                    Score = 300
+                });
+                return results;
             }
 
             return results;
         }
+        public Control CreateSettingPanel()
+        {
+            return new FendCalculatorSettings(_viewModel);
+        }
     }
 }
\ No newline at end of file
diff --git a/Readme.md b/Readme.md
index 17ed0bc..8995c0b 100644
--- a/Readme.md
+++ b/Readme.md
@@ -3,5 +3,10 @@ Flow.Launcher.Plugin.FendCalculator
 
 Integration of [Fend](https://printfn.github.io/fend/) with [Flow launcher](https://github.com/Flow-Launcher/Flow.Launcher).
 
+## Settings
+| Setting      | Type   | Default | Description                                    |
+| ------------ | ------ | ------- | ---------------------------------------------- |
+| Fend Command | string | fend    | Command to run fend or path to fend executable | 
+
 ## WIP
 This plugin is still being worked on, some features are yet to be implemented.
\ No newline at end of file
diff --git a/Settings.cs b/Settings.cs
new file mode 100644
index 0000000..a3c2a27
--- /dev/null
+++ b/Settings.cs
@@ -0,0 +1,7 @@
+namespace Flow.Launcher.Plugin.FendCalculator
+{
+    public class Settings
+    {
+        public string FendCommand { get; set; } = "fend";
+    }
+}
\ No newline at end of file
diff --git a/ViewModels/RelayCommand.cs b/ViewModels/RelayCommand.cs
new file mode 100644
index 0000000..bb0a940
--- /dev/null
+++ b/ViewModels/RelayCommand.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Windows.Input;
+
+namespace Flow.Launcher.Plugin.FendCalculator.ViewModels
+{
+    internal class RelayCommand : ICommand
+    {
+        private Action<object> _action;
+
+        public RelayCommand(Action<object> action)
+        {
+            _action = action;
+        }
+
+        public virtual bool CanExecute(object parameter)
+        {
+            return true;
+        }
+
+        public event EventHandler CanExecuteChanged;
+
+        public virtual void Execute(object parameter)
+        {
+            _action?.Invoke(parameter);
+        }
+    }
+}
diff --git a/ViewModels/SettingsViewModel.cs b/ViewModels/SettingsViewModel.cs
new file mode 100644
index 0000000..b9cabff
--- /dev/null
+++ b/ViewModels/SettingsViewModel.cs
@@ -0,0 +1,63 @@
+using System.Collections.Generic;
+using System.Linq;
+
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Linq;
+using System.Windows;
+using System.Windows.Forms;
+using System.Windows.Input;
+
+namespace Flow.Launcher.Plugin.FendCalculator.ViewModels
+{
+    public class SettingsViewModel : BaseModel
+    {
+        public SettingsViewModel(Settings settings)
+        {
+            Settings = settings;
+        }
+
+        public Settings Settings { get; init; }
+
+        public string FendCommand
+        {
+            get => Settings.FendCommand;
+            set
+            {
+                Settings.FendCommand = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private string? PromptUserSelectPath(string? initialDirectory = null)
+        {
+            string? path = null;
+
+            var openFileDialog = new OpenFileDialog();
+            if (initialDirectory is not null)
+                openFileDialog.InitialDirectory = initialDirectory;
+
+            if (openFileDialog.ShowDialog() != DialogResult.OK)
+                return path;
+
+            path = openFileDialog.FileName;
+
+            return path;
+        }
+
+        private ICommand? _openFendPathCommand;
+
+        public ICommand OpenFendPath => _openFendPathCommand ??= new RelayCommand(_ =>
+        {
+            var path = PromptUserSelectPath(Settings.FendCommand != null ? Path.GetDirectoryName(Settings.FendCommand) : null);
+            if (path is null)
+                return;
+
+            FendCommand = path;
+        });
+    }
+}
\ No newline at end of file
diff --git a/Views/FendCalculatorSettings.xaml b/Views/FendCalculatorSettings.xaml
new file mode 100644
index 0000000..aaadfb3
--- /dev/null
+++ b/Views/FendCalculatorSettings.xaml
@@ -0,0 +1,55 @@
+<UserControl
+    x:Class="Flow.Launcher.Plugin.FendCalculator.Views.FendCalculatorSettings"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:ui="http://schemas.modernwpf.com/2019"
+    xmlns:viewModels="clr-namespace:Flow.Launcher.Plugin.FendCalculator.ViewModels"
+    xmlns:views="clr-namespace:Flow.Launcher.Plugin.FendCalculator.Views"
+    d:DataContext="{d:DesignInstance viewModels:SettingsViewModel}"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    mc:Ignorable="d">
+
+    <!-- <UserControl.Resources>
+        <core:LocalizationConverter x:Key="LocalizationConverter" />
+    </UserControl.Resources> -->
+
+    <Grid Margin="70,14,0,14">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition Width="3*" />
+        </Grid.ColumnDefinitions>
+
+        <TextBlock
+            Grid.Row="0"
+            Grid.Column="0"
+            Margin="0,0,10,0"
+            VerticalAlignment="Center"
+            FontSize="14"
+            Text="Fend Command" />
+        <StackPanel
+            Grid.Row="0"
+            Grid.Column="1"
+            Margin="0,6,6,6"
+            Orientation="Horizontal">
+            <TextBox
+                Width="250"
+                HorizontalAlignment="Left"
+                VerticalAlignment="Center"
+                Text="{Binding FendCommand}"
+                TextWrapping="NoWrap" />
+            <Button
+                MinWidth="50"
+                Margin="5,0,0,0"
+                HorizontalAlignment="Left"
+                VerticalAlignment="Center"
+                Command="{Binding OpenFendPath}"
+                Content="..." />
+        </StackPanel>
+    </Grid>
+</UserControl>
\ No newline at end of file
diff --git a/Views/FendCalculatorSettings.xaml.cs b/Views/FendCalculatorSettings.xaml.cs
new file mode 100644
index 0000000..55ecb84
--- /dev/null
+++ b/Views/FendCalculatorSettings.xaml.cs
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using Flow.Launcher.Plugin.FendCalculator.ViewModels;
+
+namespace Flow.Launcher.Plugin.FendCalculator.Views
+{
+    /// <summary>
+    /// Interaction logic for FendCalculatorSettings.xaml
+    /// </summary>
+    public partial class FendCalculatorSettings : UserControl
+    {
+        private readonly SettingsViewModel _viewModel;
+        private readonly Settings _settings;
+
+        public FendCalculatorSettings(SettingsViewModel viewModel)
+        {
+            _viewModel = viewModel;
+            _settings = viewModel.Settings;
+            DataContext = viewModel;
+            InitializeComponent();
+        }
+    }
+
+
+}
\ No newline at end of file
diff --git a/plugin.json b/plugin.json
index 75ea8a1..12eeda4 100644
--- a/plugin.json
+++ b/plugin.json
@@ -4,7 +4,7 @@
     "Name": "FendCalculator",
     "Description": "Arbitrary-precision unit-aware calculator. https://printfn.github.io/fend/",
     "Author": "IsaacTay",
-    "Version": "0.1.0",
+    "Version": "0.2.0",
     "Language": "csharp",
     "Website": "https://github.com/IsaacTay/Flow.Launcher.Plugin.FendCalculator",
     "IcoPath": "Images\\calculator.png",