diff --git a/lib/nulla_web/components/templates/auth/sign_in.html.heex b/lib/nulla_web/components/templates/auth/sign_in.html.heex
new file mode 100644
index 0000000..1cdbb55
--- /dev/null
+++ b/lib/nulla_web/components/templates/auth/sign_in.html.heex
@@ -0,0 +1,9 @@
+<main class="flex min-h-screen items-center justify-center">
+  <form class="flex flex-col gap-2" action="/auth/sign_in" method="post">
+    <label for="email">E-mail address *</label>
+    <input id="email" name="email" type="email" maxlength="50" required />
+    <label for="password">Password *</label>
+    <input id="password" name="password" type="password" minlength="8" maxlength="50" required />
+    <button class="text-white bg-black py-2 border" type="submit">Log in</button>
+  </form>
+</main>
diff --git a/lib/nulla_web/components/templates/auth/sign_up.html.heex b/lib/nulla_web/components/templates/auth/sign_up.html.heex
new file mode 100644
index 0000000..4685573
--- /dev/null
+++ b/lib/nulla_web/components/templates/auth/sign_up.html.heex
@@ -0,0 +1,12 @@
+<main class="flex min-h-screen items-center justify-center">
+  <form class="flex flex-col gap-2" action="/auth" method="post">
+    <label for="username">Username *</label>
+    <input id="username" name="username" type="text" maxlength="30" required />
+    <label for="email">E-mail address *</label>
+    <input id="email" name="email" type="email" maxlength="50" required />
+    <label for="password">Password *</label>
+    <input id="password" name="password" type="password" minlength="8" maxlength="50" required />
+    <input id="password_confirm" name="password_confirm" type="password" minlength="8" maxlength="50" placeholder="Confirm password" />
+    <button class="text-white bg-black py-2 border" type="submit">Sign up</button>
+  </form>
+</main>
diff --git a/lib/nulla_web/controllers/auth_controller.ex b/lib/nulla_web/controllers/auth_controller.ex
index 3edddb1..a4df65d 100644
--- a/lib/nulla_web/controllers/auth_controller.ex
+++ b/lib/nulla_web/controllers/auth_controller.ex
@@ -1,12 +1,37 @@
 defmodule NullaWeb.AuthController do
   use NullaWeb, :controller
+  alias Nulla.Models.User
 
-  def sign_in do
+  def sign_in_view(conn, _params) do
+    render(conn, :sign_in, layout: false)
   end
 
-  def sign_out do
+  def sign_in(conn, _params) do
+    conn
+    |> redirect(to: "/")
   end
 
-  def sign_up do
+  def sign_out(conn, _params) do
+    conn
+    |> configure_session(drop: true)
+    |> put_flash(:info, "You have been logged out.")
+    |> redirect(to: "/")
+  end
+
+  def sign_up_view(conn, _params) do
+    render(conn, :sign_up, layout: false)
+  end
+
+  def sign_up(conn, params) do
+    case User.create_user(params) do
+      {:ok, user} ->
+        conn
+        |> put_session(:user_id, user.id)
+        |> put_flash(:info, "You're registred!")
+        |> redirect(to: "/")
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        render(conn, "sign_up.html", changeset: changeset)
+    end
   end
 end