diff --git a/lib/cli.ml b/lib/cli.ml
index 7633d00..93f31da 100644
--- a/lib/cli.ml
+++ b/lib/cli.ml
@@ -23,7 +23,7 @@ let ignore_size_warning_arg =
   Arg.(value & flag & info [ "i"; "ignore-size-warning" ] ~doc)
 
 let run owner_repo local_path log_file ignore_size_warning =
-  Tui.start ~owner_repo ~local_path ~log_file ~ignore_size_warning
+  Tui.start { owner_repo; local_path; log_file; ignore_size_warning }
 
 let gh_tui_term =
   Term.(
diff --git a/lib/tui/dune b/lib/tui/dune
index dfaff8b..d88ea5e 100644
--- a/lib/tui/dune
+++ b/lib/tui/dune
@@ -6,6 +6,7 @@
   extra
   fs
   gh
+  init
   log
   model
   pretty
diff --git a/lib/tui/init/dune b/lib/tui/init/dune
new file mode 100644
index 0000000..9d38c72
--- /dev/null
+++ b/lib/tui/init/dune
@@ -0,0 +1,7 @@
+(library
+ (name init)
+ (libraries
+  terminal_size
+  ;; Internal dependencies
+  model
+  fs))
diff --git a/lib/tui/init/init.ml b/lib/tui/init/init.ml
new file mode 100644
index 0000000..80f942a
--- /dev/null
+++ b/lib/tui/init/init.ml
@@ -0,0 +1,78 @@
+type owner_repo = {
+  owner : string;
+  repo : string;
+}
+
+let parse_owner_repo owner_repo =
+  match String.split_on_char '/' owner_repo with
+  | [ owner; repo ] -> { owner; repo }
+  | _ ->
+      Printf.eprintf "❌ Expected <owner>/<repo> but got: '%s'\n" owner_repo;
+      exit 1
+
+let clone_repo ~owner_repo ~local_path =
+  match local_path with
+  | Some path -> path
+  | None ->
+      let { owner; repo } = owner_repo in
+      let temp_dir =
+        Filename.temp_dir "github-tui-" (Printf.sprintf "%s-%s" owner repo)
+      in
+      let cmd =
+        Printf.sprintf "git clone git@github.com:%s/%s.git %s" owner repo
+          temp_dir
+      in
+      Shell.proc cmd;
+      temp_dir
+
+let read_root_tree ~root_dir_path =
+  let tree = Fs.read_tree root_dir_path in
+  let files =
+    match tree with
+    | Fs.File { name; _ } ->
+        Printf.eprintf "Given path '%s' is not a directory!" name;
+        exit 1
+    | Fs.Dir { children = files; _ } -> files
+  in
+  files
+
+type terminal = {
+  height : int;
+  width : int;
+}
+
+let min_height, min_width = (40, 140)
+
+let get_terminal_dimensions ignore_size_warning =
+  match (Terminal_size.get_rows (), Terminal_size.get_columns ()) with
+  | Some height, Some width ->
+      if (not ignore_size_warning) && (height < min_height || width < min_width)
+      then (
+        Printf.eprintf
+          {|⚠️ Terminal size is too small! GitHub TUI works better on bigger terminals.
+          Expected size: %3d width x %3d height
+                But got: %3d width x %3d height
+      
+      Pass the --ignore-size-warning flag to run anyway.
+|}
+          min_width min_height width height;
+        exit 1);
+      { height; width }
+  | _ ->
+      Printf.eprintf "⚠️ Not able to get the terminal size.\n";
+      exit 1
+
+type t = {
+  owner_repo : string;
+  local_path : string option;
+  log_file : string option;
+  ignore_size_warning : bool;
+}
+
+let init { owner_repo; local_path; ignore_size_warning; log_file = _ } :
+    Model.initial_data =
+  let ({ owner; repo } as owner_repo) = parse_owner_repo owner_repo in
+  let root_dir_path = clone_repo ~owner_repo ~local_path in
+  let files = Lazy.force (read_root_tree ~root_dir_path) in
+  let { height; width } = get_terminal_dimensions ignore_size_warning in
+  { owner; repo; root_dir_path; files; width; height }
diff --git a/lib/tui/init/init.mli b/lib/tui/init/init.mli
new file mode 100644
index 0000000..efdcecb
--- /dev/null
+++ b/lib/tui/init/init.mli
@@ -0,0 +1,8 @@
+type t = {
+  owner_repo : string;
+  local_path : string option;
+  log_file : string option;
+  ignore_size_warning : bool;
+}
+
+val init : t -> Model.initial_data
diff --git a/lib/tui/tui.ml b/lib/tui/tui.ml
index 2eaeb0d..e333bdd 100644
--- a/lib/tui/tui.ml
+++ b/lib/tui/tui.ml
@@ -1,76 +1,5 @@
-type owner_repo = {
-  owner : string;
-  repo : string;
-}
-
-let parse_owner_repo owner_repo =
-  match String.split_on_char '/' owner_repo with
-  | [ owner; repo ] -> { owner; repo }
-  | _ ->
-      Printf.eprintf "❌ Expected <owner>/<repo> but got: '%s'\n" owner_repo;
-      exit 1
-
-let clone_repo ~owner_repo ~local_path =
-  match local_path with
-  | Some path -> path
-  | None ->
-      let { owner; repo } = owner_repo in
-      let temp_dir =
-        Filename.temp_dir "github-tui-" (Printf.sprintf "%s-%s" owner repo)
-      in
-      let cmd =
-        Printf.sprintf "git clone git@github.com:%s/%s.git %s" owner repo
-          temp_dir
-      in
-      Shell.proc cmd;
-      temp_dir
-
-let read_root_tree ~root_dir_path =
-  let tree = Fs.read_tree root_dir_path in
-  let files =
-    match tree with
-    | Fs.File { name; _ } ->
-        Printf.eprintf "Given path '%s' is not a directory!" name;
-        exit 1
-    | Fs.Dir { children = files; _ } -> files
-  in
-  files
-
-type terminal = {
-  height : int;
-  width : int;
-}
-
-let min_height, min_width = (40, 140)
-
-let get_terminal_dimensions ignore_size_warning =
-  match (Terminal_size.get_rows (), Terminal_size.get_columns ()) with
-  | Some height, Some width ->
-      if (not ignore_size_warning) && (height < min_height || width < min_width)
-      then (
-        Printf.eprintf
-          {|⚠️ Terminal size is too small! GitHub TUI works better on bigger terminals.
-          Expected size: %3d width x %3d height
-                But got: %3d width x %3d height
-      
-      Pass the --ignore-size-warning flag to run anyway.
-|}
-          min_width min_height width height;
-        exit 1);
-      { height; width }
-  | _ ->
-      Printf.eprintf "⚠️ Not able to get the terminal size.\n";
-      exit 1
-
-let init ~owner_repo ~local_path ~ignore_size_warning : Model.initial_data =
-  let ({ owner; repo } as owner_repo) = parse_owner_repo owner_repo in
-  let root_dir_path = clone_repo ~owner_repo ~local_path in
-  let files = Lazy.force (read_root_tree ~root_dir_path) in
-  let { height; width } = get_terminal_dimensions ignore_size_warning in
-  { owner; repo; root_dir_path; files; width; height }
-
-let start ~owner_repo ~local_path ~log_file ~ignore_size_warning =
-  let initial_data = init ~owner_repo ~local_path ~ignore_size_warning in
+let start args =
+  let initial_data = Init.init args in
   let init = Model.initial_model initial_data in
   let app = Tea.make ~init ~update:Update.update ~view:View.view in
-  Tea.run ?path:log_file app
+  Tea.run ?path:args.log_file app
diff --git a/lib/tui/tui.mli b/lib/tui/tui.mli
index cbeb368..ed5990e 100644
--- a/lib/tui/tui.mli
+++ b/lib/tui/tui.mli
@@ -1,6 +1 @@
-val start :
-  owner_repo:string ->
-  local_path:string option ->
-  log_file:string option ->
-  ignore_size_warning:bool ->
-  unit
+val start : Init.t -> unit