diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index 0ec2072c0ff..8d10d5adce3 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -608,7 +608,8 @@ ENABLED = true
 ;; * https://github.com/hickford/git-credential-oauth
 ;; * https://github.com/git-ecosystem/git-credential-manager
 ;; * https://gitea.com/gitea/tea
-;DEFAULT_APPLICATIONS = git-credential-oauth, git-credential-manager, tea
+;; * Gitea App (the official Gitea mobile app)
+;DEFAULT_APPLICATIONS = git-credential-oauth, git-credential-manager, tea, gitea-app
 ;;
 ;; By default, OAuth2 applications can only use "http" and "https" as their redirect URI schemes.
 ;; If you need to use other schemes (e.g. for desktop applications), you can specify them here as a comma-separated list.
diff --git a/models/auth/oauth2.go b/models/auth/oauth2.go
index f67a5560654..b9e4a6b0ba5 100644
--- a/models/auth/oauth2.go
+++ b/models/auth/oauth2.go
@@ -83,6 +83,11 @@ func BuiltinApplications() map[string]*BuiltinOAuth2Application {
 		DisplayName:  "tea",
 		RedirectURIs: []string{"http://127.0.0.1", "https://127.0.0.1"},
 	}
+	m["b757811a-05c8-4c76-8d74-a5ee3d2073f2"] = &BuiltinOAuth2Application{
+		ConfigName:   "gitea-app",
+		DisplayName:  "Gitea App",
+		RedirectURIs: []string{"com.gitea.app://oauth/callback"},
+	}
 	return m
 }
 
diff --git a/modules/setting/oauth2.go b/modules/setting/oauth2.go
index 0c2db10edf7..94bdf780dd4 100644
--- a/modules/setting/oauth2.go
+++ b/modules/setting/oauth2.go
@@ -108,7 +108,7 @@ var OAuth2 = struct {
 	JWTSigningAlgorithm:        "RS256",
 	JWTSigningPrivateKeyFile:   "jwt/private.pem",
 	MaxTokenLength:             math.MaxInt16,
-	DefaultApplications:        []string{"git-credential-oauth", "git-credential-manager", "tea"},
+	DefaultApplications:        []string{"git-credential-oauth", "git-credential-manager", "tea", "gitea-app"},
 }
 
 func loadOAuth2From(rootCfg ConfigProvider) {
diff --git a/modules/setting/oauth2_test.go b/modules/setting/oauth2_test.go
index a2235c6fc8a..7da186a9f49 100644
--- a/modules/setting/oauth2_test.go
+++ b/modules/setting/oauth2_test.go
@@ -62,7 +62,7 @@ func TestGetGeneralSigningSecretSave(t *testing.T) {
 func TestOauth2DefaultApplications(t *testing.T) {
 	cfg, _ := NewConfigProviderFromData(``)
 	loadOAuth2From(cfg)
-	assert.Equal(t, []string{"git-credential-oauth", "git-credential-manager", "tea"}, OAuth2.DefaultApplications)
+	assert.Equal(t, []string{"git-credential-oauth", "git-credential-manager", "tea", "gitea-app"}, OAuth2.DefaultApplications)
 
 	cfg, _ = NewConfigProviderFromData(`[oauth2]
 DEFAULT_APPLICATIONS = tea