diff --git a/apps/sys_init/CMakeLists.txt b/apps/sys_init/CMakeLists.txt
new file mode 100644
index 0000000..64e1643
--- /dev/null
+++ b/apps/sys_init/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(sys_init)
+
+target_sources(app PRIVATE src/main.c)
\ No newline at end of file
diff --git a/apps/sys_init/prj.conf b/apps/sys_init/prj.conf
new file mode 100644
index 0000000..814117e
--- /dev/null
+++ b/apps/sys_init/prj.conf
@@ -0,0 +1,16 @@
+# Set to -Og
+CONFIG_DEBUG_OPTIMIZATIONS=y
+
+# Thread awareness support
+CONFIG_DEBUG_THREAD_INFO=y
+
+# Generate stack usage per-function
+CONFIG_STACK_USAGE=y
+
+# Other options in case not set by default
+CONFIG_BUILD_OUTPUT_HEX=y
+CONFIG_BUILD_OUTPUT_META=y
+CONFIG_OUTPUT_SYMBOLS=y
+CONFIG_OUTPUT_STAT=y
+CONFIG_OUTPUT_DISASSEMBLY=y
+CONFIG_OUTPUT_PRINT_MEMORY_USAGE=y
diff --git a/apps/sys_init/src/main.c b/apps/sys_init/src/main.c
new file mode 100644
index 0000000..27819b3
--- /dev/null
+++ b/apps/sys_init/src/main.c
@@ -0,0 +1,25 @@
+#include <zephyr/kernel.h>
+
+int post_kernel_cb(void) {
+	printk("[POST_KERNEL:10] Called automatically by the kernel\n");
+	return 0;
+}
+
+int post_kernel_cb2(void) {
+	printk("[POST_KERNEL:20] Called after priority 10\n");
+	return 0;
+}
+
+int application_cb(void) {
+	printk("[APPLICATION] Called automatically before main()\n");
+	return 0;
+}
+
+SYS_INIT(post_kernel_cb, POST_KERNEL, 10);
+SYS_INIT(post_kernel_cb2, POST_KERNEL, 20);
+SYS_INIT(application_cb, APPLICATION, 10);
+
+int main(void) {
+	printk("[main] running\n");
+	return 0;
+}
\ No newline at end of file