diff --git a/featuretools/gui/start.py b/featuretools/gui/start.py
new file mode 100644
index 0000000000..3db284c301
--- /dev/null
+++ b/featuretools/gui/start.py
@@ -0,0 +1,179 @@
+"""
+This module provides a GUI to merge 2 CSV-files containing data-sets into one 
+using deep feature sythesis.
+"""
+
+import wx
+import pandas as pd
+import featuretools as ft
+import warnings
+
+# Disable all warnings
+warnings.filterwarnings("ignore")
+
+
+VERT_SPACE = 40
+LEFT_MARGIN = 10
+
+
+class Frame(wx.Frame):
+
+    """
+    This class contains all the GUI-functions
+    """
+
+    def __init__(self, parent, title):
+        super().__init__(parent, title=title, size=(600, 800))
+
+        # Create panel
+        self.panel = wx.Panel(self)
+
+        # Create variables
+        self.filepath_1 = ""
+        self.filepath_2 = ""
+
+        # Directory to save csv-file
+        self.directory = ""
+
+        # Text area for primary keys
+        self.text_area_1 = wx.TextCtrl(self.panel)
+        self.text_area_2 = wx.TextCtrl(self.panel)
+
+        description_1 = "Select 2 CSV-files and merge them into 1 using deep feature synthesis\n"
+        description_2 = "The primary key of file 1 must be also present in file 2"
+
+        # Description labels
+        self.general_description = wx.StaticText(
+            self.panel, label=description_1+description_2)
+        self.user_information = wx.StaticText(self.panel, label="")
+        self.path_1_label = wx.StaticText(self.panel, label="")
+        self.key_1_label = wx.StaticText(
+            self.panel, label="Primary key of file 1:")
+        self.path_2_label = wx.StaticText(self.panel, label="")
+        self.key_2_label = wx.StaticText(
+            self.panel, label="Primary key of file 2:")
+
+        # Create static text control
+        self.file_name_label = wx.StaticText(self.panel, label="")
+
+        # Create and bind buttons
+        self.pick_1_button = wx.Button(self.panel, label='Pick file 1:')
+        self.Bind(wx.EVT_BUTTON, self.on_pick_file_1, self.pick_1_button)
+
+        self.pick_2_button = wx.Button(self.panel, label='Pick file 2:')
+        self.Bind(wx.EVT_BUTTON, self.on_pick_file_2, self.pick_2_button)
+
+        self.continue_button = wx.Button(self.panel, label="Continue")
+        self.Bind(wx.EVT_BUTTON, self.continue_pressed, self.continue_button)
+
+        # Layout control
+        self.general_description.SetPosition((LEFT_MARGIN, VERT_SPACE*1))
+
+        self.pick_1_button.SetPosition((LEFT_MARGIN, VERT_SPACE*4))
+        self.path_1_label.SetPosition((LEFT_MARGIN, VERT_SPACE*5))
+        self.key_1_label.SetPosition((LEFT_MARGIN, VERT_SPACE*6))
+        self.text_area_1.SetPosition((LEFT_MARGIN, VERT_SPACE*7))
+
+        self.pick_2_button.SetPosition((LEFT_MARGIN, VERT_SPACE*9))
+        self.path_2_label.SetPosition((LEFT_MARGIN, VERT_SPACE*10))
+        self.key_2_label.SetPosition((LEFT_MARGIN, VERT_SPACE*11))
+        self.text_area_2.SetPosition((LEFT_MARGIN, VERT_SPACE*12))
+
+        self.continue_button.SetPosition((LEFT_MARGIN, VERT_SPACE*14))
+        self.user_information.SetPosition((LEFT_MARGIN, VERT_SPACE*16))
+
+    def continue_pressed(self, event):
+        """
+        Action when continue-button is pressed
+        First asks for a directory to save the result,
+        then the data-processing starts
+        """
+
+        if not self.check_fields():
+            self.user_information.SetLabel("Error: Missing values")
+            return False
+
+        with wx.DirDialog(self, "Choose a directory to save the new file", style=wx.DD_DEFAULT_STYLE) as dialog:
+            if dialog.ShowModal() == wx.ID_OK:
+                self.directory = dialog.GetPath()
+
+                # Error handling
+                try:
+                    self.process_data()
+                    self.user_information.SetLabel(
+                        "File result.csv has been generated")
+                except:
+                    self.user_information.SetLabel(
+                        " Error: Wrong information \n Check keys and dataset")
+
+    def process_data(self):
+        """The acutal data processing and saving"""
+
+        # Load the data into dataframes
+        df1 = pd.read_csv(self.filepath_1)
+        df2 = pd.read_csv(self.filepath_2)
+
+        # Load primary keys:
+        pk1 = self.text_area_1.GetValue()
+        pk2 = self.text_area_2.GetValue()
+
+        # Create a new EntitySet
+        entities = {
+            "data1": (df1, pk1),
+            "data2": (df2, pk2),
+        }
+
+        # Add a relationship between datasets
+        relationships = [("data1", pk1, "data2", pk1)]
+
+        # Run deep feature synthesis to automatically generate features
+        feature_matrix, features_defs = ft.dfs(
+            dataframes=entities,
+            relationships=relationships,
+            target_dataframe_name="data1",
+        )
+
+        print(feature_matrix)
+
+        dir_and_filename = self.directory+'result.csv'
+
+        feature_matrix.to_csv(dir_and_filename)
+
+    def on_pick_file_1(self, event):
+        self.pick_file(1)
+
+    def on_pick_file_2(self, event):
+        self.pick_file(2)
+
+    def pick_file(self, filenumber):
+        """File dialog"""
+
+        with wx.FileDialog(self, "Open a file", wildcard="CSV files (*.csv)|*.csv",
+                           style=wx.FD_OPEN | wx.FD_FILE_MUST_EXIST) as fileDialog:
+            if fileDialog.ShowModal() == wx.ID_OK:
+                # Get the selected file path
+                filepath = fileDialog.GetPath()
+
+            if filenumber == 1:
+                self.filepath_1 = filepath
+                self.path_1_label.SetLabel(filepath)
+            else:
+                self.filepath_2 = filepath
+                self.path_2_label.SetLabel(filepath)
+
+    def check_fields(self):
+        """Checks if necessary fields are empty"""
+
+        if self.text_area_1 == "" or self.text_area_2 == "":
+            return False
+        if self.filepath_1 == "" or self.filepath_2 == "":
+            return False
+
+        return True
+
+
+if __name__ == '__main__':
+    app = wx.App()
+    frame = Frame(None, title="Feature Tools")
+    frame.Show()
+    app.MainLoop()