diff --git a/V2er.xcodeproj/project.pbxproj b/V2er.xcodeproj/project.pbxproj
index 0852e9c..17e0ebc 100644
--- a/V2er.xcodeproj/project.pbxproj
+++ b/V2er.xcodeproj/project.pbxproj
@@ -1061,12 +1061,14 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
+				MARKETING_VERSION = 1.1.2;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				CURRENT_PROJECT_VERSION = 29;
 			};
 			name = Debug;
 		};
@@ -1116,12 +1118,14 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
+				MARKETING_VERSION = 1.1.2;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_COMPILATION_MODE = wholemodule;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
 				VALIDATE_PRODUCT = YES;
+				CURRENT_PROJECT_VERSION = 29;
 			};
 			name = Release;
 		};
@@ -1131,7 +1135,6 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 28;
 				DEVELOPMENT_ASSET_PATHS = "\"V2er/Preview Content\"";
 				DEVELOPMENT_TEAM = DZCZQ4694Z;
 				ENABLE_PREVIEWS = YES;
@@ -1143,7 +1146,6 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.1.1;
 				PRODUCT_BUNDLE_IDENTIFIER = v2er.app;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -1158,7 +1160,6 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 28;
 				DEVELOPMENT_ASSET_PATHS = "\"V2er/Preview Content\"";
 				DEVELOPMENT_TEAM = DZCZQ4694Z;
 				ENABLE_PREVIEWS = YES;
@@ -1170,7 +1171,6 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.1.1;
 				PRODUCT_BUNDLE_IDENTIFIER = v2er.app;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
diff --git a/V2er/Config/Version.xcconfig b/V2er/Config/Version.xcconfig
new file mode 100644
index 0000000..fc0ad20
--- /dev/null
+++ b/V2er/Config/Version.xcconfig
@@ -0,0 +1,12 @@
+// Version.xcconfig
+// Centralized version configuration for V2er iOS app
+//
+// To update versions, only modify these two lines:
+// VERSION_NAME: User-facing version (e.g., 1.1.2)
+// VERSION_CODE: Build number (must always increase)
+
+// VERSION_NAME - This is what users see (e.g., 1.1.2)
+MARKETING_VERSION = 1.1.2
+
+// VERSION_CODE - Internal build number (e.g., 29, 30, 31...)
+CURRENT_PROJECT_VERSION = 29
\ No newline at end of file
diff --git a/VERSIONING.md b/VERSIONING.md
new file mode 100644
index 0000000..b7f58a4
--- /dev/null
+++ b/VERSIONING.md
@@ -0,0 +1,70 @@
+# Version Management Guide
+
+## Version Terminology
+
+This project uses two version identifiers:
+
+### VERSION_NAME (MARKETING_VERSION in Xcode)
+- **What**: User-facing version number (e.g., "1.1.2")
+- **Where**: Displayed in App Store and Settings
+- **Format**: MAJOR.MINOR.PATCH
+- **When to change**: For feature releases and updates
+
+### VERSION_CODE (CURRENT_PROJECT_VERSION in Xcode)
+- **What**: Build number (e.g., "28", "29", "30")
+- **Where**: Used internally by Apple for tracking builds
+- **Format**: Integer that must always increase
+- **When to change**: Every single build uploaded to TestFlight/App Store
+
+## ✅ Centralized Version Configuration
+
+**Versions are now defined in ONE place only!**
+
+The version numbers are defined at the project level and automatically inherited by all targets (Debug and Release).
+
+### How to Update Versions
+
+To update versions, you only need to modify **2 locations** in `V2er.xcodeproj/project.pbxproj`:
+
+1. Search for the **Debug** project configuration and update:
+```
+/* Debug project configuration */
+MARKETING_VERSION = 1.1.2;        /* VERSION_NAME */
+CURRENT_PROJECT_VERSION = 29;     /* VERSION_CODE */
+```
+
+2. Search for the **Release** project configuration and update:
+```
+/* Release project configuration */
+MARKETING_VERSION = 1.1.2;        /* VERSION_NAME */
+CURRENT_PROJECT_VERSION = 29;     /* VERSION_CODE */
+```
+
+That's it! The target configurations will automatically inherit these values.
+
+## Important Notes
+
+1. **Both values must be updated** in both Debug and Release configurations
+2. **VERSION_CODE must always increase** - even for the same VERSION_NAME
+3. **Fastlane auto-increment**: Our Fastlane setup automatically increments VERSION_CODE for TestFlight builds
+4. **Info.plist**: Automatically uses these values via:
+   - `$(MARKETING_VERSION)` → CFBundleShortVersionString (VERSION_NAME)
+   - `$(CURRENT_PROJECT_VERSION)` → CFBundleVersion (VERSION_CODE)
+
+## Example Version Progression
+
+| VERSION_NAME | VERSION_CODE | Notes |
+|-------------|--------------|-------|
+| 1.1.0 | 27 | Previous release |
+| 1.1.1 | 28 | Bug fix release |
+| 1.1.2 | 29 | First build of 1.1.2 |
+| 1.1.2 | 30 | Second build of 1.1.2 (bug fix) |
+| 1.1.2 | 31 | Final 1.1.2 for App Store |
+| 1.2.0 | 32 | Next feature release |
+
+## Why Two Separate Values?
+
+- **VERSION_NAME**: What users see and understand
+- **VERSION_CODE**: Ensures every upload to Apple is unique
+- Multiple builds of the same version can exist (e.g., testing different fixes)
+- Apple requires VERSION_CODE to always increase for tracking
\ No newline at end of file