diff --git a/examples/list/dune b/examples/list/dune
index 890388a..b00e73b 100644
--- a/examples/list/dune
+++ b/examples/list/dune
@@ -1,3 +1,3 @@
 (executable
-  (name main)
-  (libraries minttea spices leaves str))
+ (name main)
+ (libraries minttea spices leaves str))
diff --git a/minttea/minttea.ml b/minttea/minttea.ml
index 30e33fd..e565d30 100644
--- a/minttea/minttea.ml
+++ b/minttea/minttea.ml
@@ -4,20 +4,28 @@ module Command = Command
 module App = App
 module Program = Program
 
+type config = {
+  fps: int;
+}
+
+let make_config ?(fps = 60) () = {fps}
+
+let default_config = make_config ()
+
 let app = App.make
 
-let run ?(fps = 60) ~initial_model app =
+let run ?fps ~initial_model app =
   let prog = Program.make ~app ~fps in
   Program.run prog initial_model;
   Logger.trace (fun f -> f "terminating")
 
-let start app ~initial_model =
+let start ?(config = default_config) app ~initial_model =
   let module App = struct
     let start () =
       Logger.set_log_level None;
       let pid =
         spawn_link (fun () ->
-            run app ~initial_model;
+            run ~fps:config.fps app ~initial_model;
             Logger.trace (fun f -> f "about to shutdown");
             shutdown ~status:0 ())
       in
diff --git a/minttea/minttea.mli b/minttea/minttea.mli
index 2770820..5c56de2 100644
--- a/minttea/minttea.mli
+++ b/minttea/minttea.mli
@@ -46,5 +46,15 @@ val app :
   unit ->
   'model App.t
 
+(** Configuration for a TUI app. Use {!make_config} to create a configuration value. *)
+type config
+
+(** Create a configuration to be used by {!start}. Default configuration parameters are:
+
+  - [fps]: 60
+
+*)
+val make_config: ?fps:int -> unit -> config
+
 val run : ?fps:int -> initial_model:'model -> 'model App.t -> unit
-val start : 'model App.t -> initial_model:'model -> unit
+val start : ?config:config -> 'model App.t -> initial_model:'model -> unit