diff --git a/pyzebra/app/app.py b/pyzebra/app/app.py
index 21973d3..d8460a5 100644
--- a/pyzebra/app/app.py
+++ b/pyzebra/app/app.py
@@ -10,6 +10,7 @@ import panel_ccl_integrate
 import panel_hdf_anatric
 import panel_hdf_viewer
 import panel_param_study
+import panel_spind
 
 
 doc = curdoc()
@@ -29,10 +30,11 @@ tab_hdf_viewer = panel_hdf_viewer.create()
 tab_hdf_anatric = panel_hdf_anatric.create()
 tab_ccl_integrate = panel_ccl_integrate.create()
 tab_param_study = panel_param_study.create()
+tab_spind = panel_spind.create()
 
 doc.add_root(
     column(
-        Tabs(tabs=[tab_hdf_viewer, tab_hdf_anatric, tab_ccl_integrate, tab_param_study]),
+        Tabs(tabs=[tab_hdf_viewer, tab_hdf_anatric, tab_ccl_integrate, tab_param_study, tab_spind]),
         row(stdout_textareainput, bokeh_log_textareainput, sizing_mode="scale_both"),
     )
 )
diff --git a/pyzebra/app/panel_spind.py b/pyzebra/app/panel_spind.py
new file mode 100644
index 0000000..04cc1e6
--- /dev/null
+++ b/pyzebra/app/panel_spind.py
@@ -0,0 +1,45 @@
+import tempfile
+
+from bokeh.layouts import column, row
+from bokeh.models import (
+    Button,
+    Panel,
+    Spinner,
+    TextAreaInput,
+    TextInput,
+)
+
+
+def create():
+    selection_list = TextAreaInput(title="ROIs:", rows=7)
+    lattice_const_textinput = TextInput(title="Lattice constants:")
+    max_res_spinner = Spinner(title="max-res", value=2, step=0.01)
+    seed_pool_size_spinner = Spinner(title="seed-pool-size", value=5, step=0.01)
+    seed_len_tol_spinner = Spinner(title="seed-len-tol", value=0.02, step=0.01)
+    seed_angle_tol_spinner = Spinner(title="seed-angle-tol", value=1, step=0.01)
+    eval_hkl_tol_spinner = Spinner(title="eval-hkl-tol", value=0.15, step=0.01)
+
+    def process_button_callback():
+        with tempfile.TemporaryDirectory() as temp_dir:
+            temp_file = temp_dir + "/temp.xml"
+
+    process_button = Button(label="Process", button_type="primary")
+    process_button.on_click(process_button_callback)
+
+    output_textarea = TextAreaInput(title="Output UB matrix:", rows=7)
+
+    tab_layout = row(
+        column(
+            selection_list,
+            lattice_const_textinput,
+            max_res_spinner,
+            seed_pool_size_spinner,
+            seed_len_tol_spinner,
+            seed_angle_tol_spinner,
+            eval_hkl_tol_spinner,
+            process_button,
+        ),
+        output_textarea,
+    )
+
+    return Panel(child=tab_layout, title="spind")