diff --git a/README.md b/README.md
index 20073c26..10045fe6 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,9 @@ It provides an application framework that is based on code from the [Flipper Zer
 
 Tactility features a desktop that can launch apps:
 
-![screenshot of desktop app](docs/pics/screenshot-desktop.png) ![screenshot of files app](docs/pics/screenshot-files.png) ![screenshot of system info app](docs/pics/screenshot-systeminfo.png)
+![screenshot of desktop app](docs/pics/screenshot-desktop.png) ![screenshot of files app](docs/pics/screenshot-files.png)
+
+![screenshot of system info app](docs/pics/screenshot-systeminfo.png) ![hello world app screenshot](docs/pics/screenshot-helloworld.png)
 
 Through the Settings app you can connect to Wi-Fi or change the display settings:
 
@@ -37,7 +39,7 @@ UI is created with [lvgl](https://github.com/lvgl/lvgl) which has lots of [widge
 Creating a touch-capable UI is [easy](https://docs.lvgl.io/8.3/get-started/quick-overview.html) and doesn't require your own render loop!
 
 ```c
-static void app_show(TT_UNUSED App app, lv_obj_t* parent) {
+static void app_show(App app, lv_obj_t* parent) {
     // Default toolbar with app name and close button
     lv_obj_t* toolbar = tt_toolbar_create_for_app(parent, app);
     lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
diff --git a/app-esp/src/hello_world/hello_world.c b/app-esp/src/hello_world/hello_world.c
index aacc900a..16813bc3 100644
--- a/app-esp/src/hello_world/hello_world.c
+++ b/app-esp/src/hello_world/hello_world.c
@@ -2,7 +2,7 @@
 #include "lvgl.h"
 #include "ui/toolbar.h"
 
-static void app_show(TT_UNUSED App app, lv_obj_t* parent) {
+static void app_show(App app, lv_obj_t* parent) {
     lv_obj_t* toolbar = tt_toolbar_create_for_app(parent, app);
     lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
 
diff --git a/app-esp/src/main.c b/app-esp/src/main.c
index 1a33e113..c4cb14d5 100644
--- a/app-esp/src/main.c
+++ b/app-esp/src/main.c
@@ -10,7 +10,7 @@ extern const ServiceManifest wifi_service;
 extern const AppManifest wifi_connect_app;
 extern const AppManifest wifi_manage_app;
 
-TT_UNUSED void app_main(void) {
+void app_main(void) {
     static const Config config = {
         /**
          * Auto-select a board based on the ./sdkconfig.board.* file
diff --git a/app-sim/src/hello_world/hello_world.c b/app-sim/src/hello_world/hello_world.c
index 70c28e61..0f057b08 100644
--- a/app-sim/src/hello_world/hello_world.c
+++ b/app-sim/src/hello_world/hello_world.c
@@ -2,7 +2,7 @@
 #include "services/loader/loader.h"
 #include "ui/toolbar.h"
 
-static void app_show(TT_UNUSED App app, lv_obj_t* parent) {
+static void app_show(App app, lv_obj_t* parent) {
     lv_obj_t* toolbar = tt_toolbar_create_for_app(parent, app);
     lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
 
diff --git a/app-sim/src/lvgl_task.c b/app-sim/src/lvgl_task.c
index 1c63935e..68f9ebd2 100644
--- a/app-sim/src/lvgl_task.c
+++ b/app-sim/src/lvgl_task.c
@@ -19,7 +19,7 @@ static uint32_t task_max_sleep_ms = 10;
 static QueueHandle_t task_mutex = NULL;
 static bool task_running = false;
 
-static void lvgl_task(TT_UNUSED void* arg);
+static void lvgl_task(void* arg);
 
 static bool task_lock(int timeout_ticks) {
     assert(task_mutex != NULL);
diff --git a/tactility/src/apps/desktop/desktop.c b/tactility/src/apps/desktop/desktop.c
index b831f4a2..1c494779 100644
--- a/tactility/src/apps/desktop/desktop.c
+++ b/tactility/src/apps/desktop/desktop.c
@@ -20,7 +20,7 @@ static void create_app_widget(const AppManifest* manifest, void* parent) {
     lv_obj_add_event_cb(btn, &on_app_pressed, LV_EVENT_CLICKED, (void*)manifest);
 }
 
-static void desktop_show(TT_UNUSED App app, TT_UNUSED lv_obj_t* parent) {
+static void desktop_show(TT_UNUSED App app, lv_obj_t* parent) {
     lv_obj_t* list = lv_list_create(parent);
     lv_obj_set_size(list, LV_PCT(100), LV_PCT(100));
     lv_obj_center(list);
diff --git a/tactility/src/apps/screenshot/screenshot_ui.c b/tactility/src/apps/screenshot/screenshot_ui.c
index 8dfe3dc3..f421ea2f 100644
--- a/tactility/src/apps/screenshot/screenshot_ui.c
+++ b/tactility/src/apps/screenshot/screenshot_ui.c
@@ -28,7 +28,7 @@ static void on_mode_set(lv_event_t* event) {
     update_mode(ui);
 }
 
-static void on_start_pressed(TT_UNUSED lv_event_t* event) {
+static void on_start_pressed(lv_event_t* event) {
     ScreenshotUi* ui = event->user_data;
 
     if (tt_screenshot_is_started()) {
diff --git a/tactility/src/apps/settings/display/display.c b/tactility/src/apps/settings/display/display.c
index e22f72ed..5c2f2897 100644
--- a/tactility/src/apps/settings/display/display.c
+++ b/tactility/src/apps/settings/display/display.c
@@ -66,7 +66,7 @@ static void on_orientation_set(lv_event_t* event) {
     }
 }
 
-static void app_show(TT_UNUSED App app, lv_obj_t* parent) {
+static void app_show(App app, lv_obj_t* parent) {
     lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
 
     tt_toolbar_create_for_app(parent, app);
diff --git a/tactility/src/apps/settings/settings.c b/tactility/src/apps/settings/settings.c
index 9c4d153e..bd2fd3ee 100644
--- a/tactility/src/apps/settings/settings.c
+++ b/tactility/src/apps/settings/settings.c
@@ -21,7 +21,7 @@ static void create_app_widget(const AppManifest* manifest, void* parent) {
     lv_obj_add_event_cb(btn, &on_app_pressed, LV_EVENT_CLICKED, (void*)manifest);
 }
 
-static void on_show(TT_UNUSED App app, lv_obj_t* parent) {
+static void on_show(App app, lv_obj_t* parent) {
     lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
 
     tt_toolbar_create_for_app(parent, app);
diff --git a/tactility/src/apps/system/files/files.c b/tactility/src/apps/system/files/files.c
index 009e4980..23a9c409 100644
--- a/tactility/src/apps/system/files/files.c
+++ b/tactility/src/apps/system/files/files.c
@@ -46,7 +46,7 @@ static bool is_image_file(const char* filename) {
 
 static void update_views(FilesData* data);
 
-static void on_navigate_up_pressed(TT_UNUSED lv_event_t* event) {
+static void on_navigate_up_pressed(lv_event_t* event) {
     FilesData* files_data = (FilesData*)event->user_data;
     if (strcmp(files_data->current_path, "/") != 0) {
         TT_LOG_I(TAG, "Navigating upwards");
diff --git a/tactility/src/services/sdcard/sdcard.c b/tactility/src/services/sdcard/sdcard.c
index b1582ace..807a6f7a 100644
--- a/tactility/src/services/sdcard/sdcard.c
+++ b/tactility/src/services/sdcard/sdcard.c
@@ -9,7 +9,7 @@
 
 #define TAG "sdcard_service"
 
-static int32_t sdcard_task(TT_UNUSED void* context);
+static int32_t sdcard_task(void* context);
 
 typedef struct {
     Mutex* mutex;
diff --git a/tactility/src/tactility.c b/tactility/src/tactility.c
index 2f73d012..6a4f18a6 100644
--- a/tactility/src/tactility.c
+++ b/tactility/src/tactility.c
@@ -93,7 +93,7 @@ static void register_and_start_user_services(const ServiceManifest* const servic
     }
 }
 
-TT_UNUSED void tt_init(const Config* config) {
+void tt_init(const Config* config) {
     TT_LOG_I(TAG, "tt_init started");
 
     // Assign early so starting services can use it
diff --git a/tactility/src/tactility.h b/tactility/src/tactility.h
index 81ea139b..a66318bc 100644
--- a/tactility/src/tactility.h
+++ b/tactility/src/tactility.h
@@ -21,7 +21,7 @@ typedef struct {
  * Attempts to initialize Tactility and all configured hardware.
  * @param config
  */
-TT_UNUSED void tt_init(const Config* config);
+void tt_init(const Config* config);
 
 /**
  * While technically nullable, this instance is always set if tt_init() succeeds.