diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..315f335
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,16 @@
+# Xcode
+.xcworkspace/
+xcuserdata/
+UserInterfaceState.xcuserstate
+project.xcworkspace/
+*.xcuserdatad/
+*.xccheckout
+xcshareddata/
+*.moved-aside
+DerivedData
+.DS_Store
+*.hmap
+
+# macOS
+build/
+*.app
diff --git a/password.xcodeproj/project.pbxproj b/password.xcodeproj/project.pbxproj
index a3461e1..56e343b 100644
--- a/password.xcodeproj/project.pbxproj
+++ b/password.xcodeproj/project.pbxproj
@@ -6,6 +6,10 @@
 	objectVersion = 77;
 	objects = {
 
+/* Begin PBXBuildFile section */
+		284390B42D387B9000B4D364 /* .gitignore in Resources */ = {isa = PBXBuildFile; fileRef = 284390B32D387B8A00B4D364 /* .gitignore */; };
+/* End PBXBuildFile section */
+
 /* Begin PBXContainerItemProxy section */
 		284390632D3874C600B4D364 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
@@ -27,6 +31,7 @@
 		2843904F2D3874C500B4D364 /* password.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = password.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		284390622D3874C600B4D364 /* passwordTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = passwordTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		2843906C2D3874C600B4D364 /* passwordUITests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = passwordUITests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		284390B32D387B8A00B4D364 /* .gitignore */ = {isa = PBXFileReference; lastKnownFileType = text; path = .gitignore; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedRootGroup section */
@@ -75,6 +80,7 @@
 		284390462D3874C500B4D364 = {
 			isa = PBXGroup;
 			children = (
+				284390B32D387B8A00B4D364 /* .gitignore */,
 				284390512D3874C500B4D364 /* password */,
 				284390652D3874C600B4D364 /* passwordTests */,
 				2843906F2D3874C600B4D364 /* passwordUITests */,
@@ -212,6 +218,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				284390B42D387B9000B4D364 /* .gitignore in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/password.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/password.xcodeproj/project.xcworkspace/contents.xcworkspacedata
deleted file mode 100644
index 919434a..0000000
--- a/password.xcodeproj/project.xcworkspace/contents.xcworkspacedata
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "self:">
-   </FileRef>
-</Workspace>
diff --git a/password.xcodeproj/xcuserdata/markus.xcuserdatad/xcschemes/xcschememanagement.plist b/password.xcodeproj/xcuserdata/markus.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index 2f4e5d8..0000000
--- a/password.xcodeproj/xcuserdata/markus.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>password.xcscheme_^#shared#^_</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>0</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>