diff --git a/src/app/app.php b/src/app/app.php
index 1fde156..037064d 100644
--- a/src/app/app.php
+++ b/src/app/app.php
@@ -3,6 +3,7 @@ namespace nulib\app;
 
 use nulib\A;
 use nulib\app\cli\Application;
+use nulib\app\config\ProfileManager;
 use nulib\cl;
 use nulib\ExitError;
 use nulib\os\path;
@@ -97,7 +98,7 @@ class app {
 
   static function params_putenv(): void {
     $params = serialize(self::get()->getParams());
-    putenv("NULIB_APP_app_params=". $params);
+    putenv("NULIB_APP_app_params=$params");
   }
 
   static function params_getenv(): ?array {
@@ -107,9 +108,7 @@ class app {
   }
 
   static function get_profile(?bool &$productionMode=null): string {
-    $app = self::get();
-    $productionMode = $app->isProductionMode();
-    return $app->getProfile();
+    return self::get()->getProfile($productionMode);
   }
 
   static function set_profile(?string $profile=null, ?bool $productionMode=null): void {
@@ -137,7 +136,6 @@ class app {
       ] = $params;
       $cwd = $params["cwd"] ?? null;
       $datadirIsDefined = true;
-      $profile = $params["profile"] ?? null;
     } else {
       # projdir
       $projdir = $params["projdir"] ?? null;
@@ -190,15 +188,16 @@ class app {
       if ($logdir === false) $logdir = $params["logdir"] ?? null;
       if ($logdir === null) $logdir = "log";
       $logdir = path::reljoin($datadir, $logdir);
-      # profile
-      $profile = getenv("${APPCODE}_PROFILE");
-      if ($profile === false) $profile = getenv("APP_PROFILE");
-      if ($profile === false) $profile = $params["profile"] ?? null;
     }
     # cwd
     $cwd ??= getcwd();
     # profile
-    $profile ??= $datadirIsDefined? "prod": "devel";
+    $this->profileManager = new ProfileManager([
+      "app" => true,
+      "name" => $appcode,
+      "default_profile" => $datadirIsDefined? "prod": "devel",
+      "profile" => $params["profile"] ?? null,
+    ]);
 
     $this->projdir = $projdir;
     $this->vendor = $vendor;
@@ -208,7 +207,6 @@ class app {
     $this->etcdir = $etcdir;
     $this->vardir = $vardir;
     $this->logdir = $logdir;
-    $this->profile = $profile;
 
     # name, title
     $appgroup = $params["appgroup"] ?? null;
@@ -283,25 +281,18 @@ class app {
     return $this->logdir;
   }
 
-  protected string $profile;
+  protected ProfileManager $profileManager;
 
-  function getProfile(): string {
-    return $this->profile;
+  function getProfile(?bool &$productionMode=null): string {
+    return $this->profileManager->getProfile($productionMode);
   }
 
-  protected bool $productionMode;
-
   function isProductionMode(): bool {
-    return $this->productionMode;
+    return $this->profileManager->isProductionMode();
   }
 
   function setProfile(?string $profile, ?bool $productionMode=null): void {
-    $profile ??= $this->profile;
-    $this->profile = $profile;
-    if ($productionMode === null) {
-      $productionMode = $profile === "prod" || $profile === "test";
-    }
-    $this->productionMode = $productionMode;
+    $this->profileManager->setProfile($profile, $productionMode);
   }
 
   /**
@@ -312,7 +303,7 @@ class app {
    */
   function withProfile(string $file, $profile): string {
     if ($profile !== false) {
-      if ($profile === null) $profile = $this->getProfile();
+      $profile ??= $this->getProfile();
       [$dir, $filename] = path::split($file);
       $basename = path::basename($filename);
       $ext = path::ext($file);
@@ -386,7 +377,7 @@ class app {
       "etcdir" => $this->etcdir,
       "vardir" => $this->vardir,
       "logdir" => $this->logdir,
-      "profile" => $this->le,
+      "profile" => $this->getProfile(),
       "appgroup" => $this->appgroup,
       "name" => $this->name,
       "title" => $this->title,
diff --git a/src/app/config.php b/src/app/config.php
index 5c2ac91..e0f21d1 100644
--- a/src/app/config.php
+++ b/src/app/config.php
@@ -10,15 +10,6 @@ use nulib\cl;
  */
 class config {
   protected static ConfigManager $config;
-  protected static ProfileManager $profile;
-
-  static function init(string $appcode): void {
-    self::$config = new ConfigManager();
-    self::$profile = new ProfileManager([
-      "app" => true,
-      "name" => $appcode,
-    ]);
-  }
 
   static function init_configurator($configurators): void {
     self::$config->addConfigurators(cl::with($configurators));
@@ -28,3 +19,9 @@ class config {
     self::$config->configure($params);
   }
 }
+
+new class extends config {
+  function __construct() {
+    self::$config = new ConfigManager();
+  }
+};
\ No newline at end of file
diff --git a/src/app/config/ProfileManager.php b/src/app/config/ProfileManager.php
index 0d380e1..6645906 100644
--- a/src/app/config/ProfileManager.php
+++ b/src/app/config/ProfileManager.php
@@ -55,6 +55,12 @@ class ProfileManager {
         $this->envKeys = [$envKey];
       }
     }
+    $this->defaultProfile = $params["default_profile"] ?? null;
+    $profile = $params["profile"] ?? null;
+    $productionMode = $params["production_mode"] ?? null;
+    $productionMode ??= $this->productionModes[$profile] ?? false;
+    $this->profile = $profile;
+    $this->productionMode = $productionMode;
   }
 
   /**
@@ -89,7 +95,7 @@ class ProfileManager {
     return null;
   }
 
-  protected ?string $defaultProfile = null;
+  protected ?string $defaultProfile;
 
   function getDefaultProfile(): ?string {
     return $this->defaultProfile;
@@ -99,9 +105,9 @@ class ProfileManager {
     $this->defaultProfile = $profile;
   }
 
-  protected ?string $profile = null;
+  protected ?string $profile;
 
-  protected bool $productionMode = false;
+  protected bool $productionMode;
 
   protected function resolveProfile(): void {
     $profile ??= $this->getenvProfile();
@@ -122,6 +128,10 @@ class ProfileManager {
     return $this->profile;
   }
 
+  function isProductionMode(): bool {
+    return $this->productionMode;
+  }
+
   function setProfile(?string $profile=null, ?bool $productionMode=null): void {
     if ($profile === null) $this->profile = null;
     $profile ??= $this->getProfile($productionMode);
diff --git a/tests/appTest.php b/tests/app/appTest.php
similarity index 89%
rename from tests/appTest.php
rename to tests/app/appTest.php
index 092b012..03ae6f0 100644
--- a/tests/appTest.php
+++ b/tests/app/appTest.php
@@ -1,10 +1,10 @@
 <?php
-namespace nulib {
+namespace nulib\app {
   use nulib\tests\TestCase;
-  use nulib\impl\config;
-  use nulib\impl\myapp;
-  use nulib\impl\MyApplication1;
-  use nulib\impl\MyApplication2;
+  use nulib\app\impl\config;
+  use nulib\app\impl\myapp;
+  use nulib\app\impl\MyApplication1;
+  use nulib\app\impl\MyApplication2;
 
   class appTest extends TestCase {
     function testWith() {
@@ -19,7 +19,7 @@ namespace nulib {
           "bindir" => "$projdir/vendor/bin",
           "autoload" => "$projdir/vendor/autoload.php",
         ],
-        "appcode" => "nur-sery",
+        "appcode" => "nur-ture",
         "cwd" => $cwd,
         "datadir" => "$projdir/devel",
         "etcdir" => "$projdir/devel/etc",
@@ -38,7 +38,7 @@ namespace nulib {
           "bindir" => "$projdir/vendor/bin",
           "autoload" => "$projdir/vendor/autoload.php",
         ],
-        "appcode" => "nur-sery",
+        "appcode" => "nur-ture",
         "cwd" => $cwd,
         "datadir" => "$projdir/devel",
         "etcdir" => "$projdir/devel/etc",
@@ -63,7 +63,7 @@ namespace nulib {
           "bindir" => "$projdir/vendor/bin",
           "autoload" => "$projdir/vendor/autoload.php",
         ],
-        "appcode" => "nur-sery",
+        "appcode" => "nur-ture",
         "cwd" => $cwd,
         "datadir" => "$projdir/devel",
         "etcdir" => "$projdir/devel/etc",
@@ -82,7 +82,7 @@ namespace nulib {
           "bindir" => "$projdir/vendor/bin",
           "autoload" => "$projdir/vendor/autoload.php",
         ],
-        "appcode" => "nur-sery",
+        "appcode" => "nur-ture",
         "cwd" => $cwd,
         "datadir" => "$projdir/devel",
         "etcdir" => "$projdir/devel/etc",
@@ -97,14 +97,14 @@ namespace nulib {
   }
 }
 
-namespace nulib\impl {
+namespace nulib\app\impl {
 
   use nulib\app\cli\Application;
   use nulib\os\path;
   use nulib\app\app;
 
   class config {
-    const PROJDIR = __DIR__.'/..';
+    const PROJDIR = __DIR__.'/../..';
 
     static function get_projdir(): string {
       return path::abspath(self::PROJDIR);