diff --git a/Xcodes.xcodeproj/project.pbxproj b/Xcodes.xcodeproj/project.pbxproj
index c7b7c7d..3186a93 100644
--- a/Xcodes.xcodeproj/project.pbxproj
+++ b/Xcodes.xcodeproj/project.pbxproj
@@ -13,6 +13,8 @@
 		CA25192A25A9644800F08414 /* XcodeInstallState.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA25192925A9644800F08414 /* XcodeInstallState.swift */; };
 		CA378F992466567600A58CE0 /* AppState.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA378F982466567600A58CE0 /* AppState.swift */; };
 		CA39711924495F0E00AFFB77 /* AppStoreButtonStyle.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA39711824495F0E00AFFB77 /* AppStoreButtonStyle.swift */; };
+		CA42DD6E25AEA8B200BC0B0C /* Logger.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA42DD6D25AEA8B200BC0B0C /* Logger.swift */; };
+		CA42DD7325AEB04300BC0B0C /* Logger.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA42DD7225AEB04300BC0B0C /* Logger.swift */; };
 		CA44901F2463AD34003D8213 /* Tag.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA44901E2463AD34003D8213 /* Tag.swift */; };
 		CA452BB0259FD9770072DFA4 /* ProgressIndicator.swift in Sources */ = {isa = PBXBuildFile; fileRef = CA452BAF259FD9770072DFA4 /* ProgressIndicator.swift */; };
 		CA452BC1259FDDFE0072DFA4 /* Stub-version.plist in Resources */ = {isa = PBXBuildFile; fileRef = CA452BBF259FDDFE0072DFA4 /* Stub-version.plist */; };
@@ -153,6 +155,8 @@
 		CA25192925A9644800F08414 /* XcodeInstallState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XcodeInstallState.swift; sourceTree = "<group>"; };
 		CA378F982466567600A58CE0 /* AppState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppState.swift; sourceTree = "<group>"; };
 		CA39711824495F0E00AFFB77 /* AppStoreButtonStyle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppStoreButtonStyle.swift; sourceTree = "<group>"; };
+		CA42DD6D25AEA8B200BC0B0C /* Logger.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Logger.swift; sourceTree = "<group>"; };
+		CA42DD7225AEB04300BC0B0C /* Logger.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Logger.swift; sourceTree = "<group>"; };
 		CA44901E2463AD34003D8213 /* Tag.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Tag.swift; sourceTree = "<group>"; };
 		CA452BAF259FD9770072DFA4 /* ProgressIndicator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ProgressIndicator.swift; sourceTree = "<group>"; };
 		CA452BBF259FDDFE0072DFA4 /* Stub-version.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = "Stub-version.plist"; sourceTree = "<group>"; };
@@ -337,6 +341,7 @@
 				CA9FF8E525959BB800E47BAF /* AuditTokenHack.m */,
 				CA9FF8EA25959BDD00E47BAF /* com.robotsandpencils.XcodesApp.Helper-Bridging-Header.h */,
 				CA9FF8DF25959BAA00E47BAF /* ConnectionVerifier.swift */,
+				CA42DD7225AEB04300BC0B0C /* Logger.swift */,
 				CA9FF8B02595967A00E47BAF /* main.swift */,
 				CA9FF8DA25959B4000E47BAF /* XPCDelegate.swift */,
 				CA9FF8C22595988B00E47BAF /* Info.plist */,
@@ -409,6 +414,7 @@
 				CAC281D9259F985100B8AB0B /* InstallationStep.swift */,
 				CA9FF8862595607900E47BAF /* InstalledXcode.swift */,
 				CAA8587B25A2B37900ACF8C0 /* IsTesting.swift */,
+				CA42DD6D25AEA8B200BC0B0C /* Logger.swift */,
 				CAE4248B259A68B800B8B246 /* Optional+IsNotNil.swift */,
 				CABFA9AE2592EEE900380FEE /* Path+.swift */,
 				CABFA9B42592EEEA00380FEE /* Process.swift */,
@@ -698,6 +704,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				CA9FF8D025959A9700E47BAF /* HelperXPCShared.swift in Sources */,
+				CA42DD7325AEB04300BC0B0C /* Logger.swift in Sources */,
 				CA9FF8DB25959B4000E47BAF /* XPCDelegate.swift in Sources */,
 				CA9FF8E625959BB800E47BAF /* AuditTokenHack.m in Sources */,
 				CA9FF8B12595967A00E47BAF /* main.swift in Sources */,
@@ -732,6 +739,7 @@
 				CABFA9C52592EEEA00380FEE /* FileManager+.swift in Sources */,
 				CABFA9CD2592EEEA00380FEE /* Foundation.swift in Sources */,
 				CA9FF8872595607900E47BAF /* InstalledXcode.swift in Sources */,
+				CA42DD6E25AEA8B200BC0B0C /* Logger.swift in Sources */,
 				CA61A6E0259835580008926E /* Xcode.swift in Sources */,
 				CAE4247F259A666100B8B246 /* MainWindow.swift in Sources */,
 				CA452BB0259FD9770072DFA4 /* ProgressIndicator.swift in Sources */,
diff --git a/Xcodes/AppleAPI/Sources/AppleAPI/Environment.swift b/Xcodes/AppleAPI/Sources/AppleAPI/Environment.swift
index 5c76749..53c5fc5 100644
--- a/Xcodes/AppleAPI/Sources/AppleAPI/Environment.swift
+++ b/Xcodes/AppleAPI/Sources/AppleAPI/Environment.swift
@@ -10,7 +10,6 @@ import Combine
  */
 public struct Environment {
     public var network = Network()
-    public var logging = Logging()
 }
 
 public var Current = Environment()
@@ -23,7 +22,3 @@ public struct Network {
         dataTask(request)
     }
 }
-
-public struct Logging {
-    public var log: (String) -> Void = { print($0) }
-}
diff --git a/Xcodes/Backend/AppState+Install.swift b/Xcodes/Backend/AppState+Install.swift
index dc250e3..4a47a20 100644
--- a/Xcodes/Backend/AppState+Install.swift
+++ b/Xcodes/Backend/AppState+Install.swift
@@ -4,6 +4,7 @@ import Path
 import AppleAPI
 import Version
 import LegibleError
+import os.log
 
 /// Downloads and installs Xcodes
 extension AppState {
@@ -27,8 +28,8 @@ extension AppState {
                     case .version:
                         // If the XIP was just downloaded, remove it and try to recover.
                         do {
-                            Current.logging.log(error.legibleLocalizedDescription)
-                            Current.logging.log("Removing damaged XIP and re-attempting installation.\n")
+                            Logger.appState.error("\(error.legibleLocalizedDescription)")
+                            Logger.appState.info("Removing damaged XIP and re-attempting installation.")
                             try Current.files.removeItem(at: damagedXIPURL)
                             return self.install(installationType, downloader: downloader, attemptNumber: attemptNumber + 1)
                                 .eraseToAnyPublisher()
@@ -82,7 +83,7 @@ extension AppState {
             aria2DownloadIsIncomplete = true
         }
         if Current.files.fileExistsAtPath(expectedArchivePath.string), aria2DownloadIsIncomplete == false {
-            Current.logging.log("(1/6) Found existing archive that will be used for installation at \(expectedArchivePath).")
+            Logger.appState.info("Found existing archive that will be used for installation at \(expectedArchivePath).")
             return Just(expectedArchivePath.url)
                 .setFailureType(to: Error.self)
                 .eraseToAnyPublisher()
diff --git a/Xcodes/Backend/Environment.swift b/Xcodes/Backend/Environment.swift
index d403faa..b812835 100644
--- a/Xcodes/Backend/Environment.swift
+++ b/Xcodes/Backend/Environment.swift
@@ -15,7 +15,6 @@ public struct Environment {
     public var shell = Shell()
     public var files = Files()
     public var network = Network()
-    public var logging = Logging()
     public var keychain = Keychain()
     public var defaults = Defaults()
     public var date: () -> Date = Date.init
@@ -190,10 +189,6 @@ public struct Network {
     }
 }
 
-public struct Logging {
-    public var log: (String) -> Void = { print($0) }
-}
-
 public struct Keychain {
     private static let keychain = KeychainAccess.Keychain(service: "com.robotsandpencils.XcodesApp")
 
diff --git a/Xcodes/Backend/HelperInstaller.swift b/Xcodes/Backend/HelperInstaller.swift
index eb997d9..af70188 100644
--- a/Xcodes/Backend/HelperInstaller.swift
+++ b/Xcodes/Backend/HelperInstaller.swift
@@ -1,6 +1,7 @@
 // From https://github.com/securing/SimpleXPCApp/
 
 import Foundation
+import os.log
 import ServiceManagement
 
 enum HelperAuthorizationError: Error {
@@ -35,8 +36,9 @@ class HelperInstaller {
             let authRef = try authorizationRef(&authRights, nil, [.interactionAllowed, .extendRights, .preAuthorize])
             var cfError: Unmanaged<CFError>?
             SMJobBless(kSMDomainSystemLaunchd, machServiceName as CFString, authRef, &cfError)
-        } catch let err {
-            print("Error in installing the helper -> \(err.localizedDescription)")
+            if let error = cfError?.takeRetainedValue() { throw error }
+        } catch {
+            Logger.helperInstaller.error("\(error.localizedDescription)")
         }
     }
 }
diff --git a/Xcodes/Backend/Logger.swift b/Xcodes/Backend/Logger.swift
new file mode 100644
index 0000000..d83f9b3
--- /dev/null
+++ b/Xcodes/Backend/Logger.swift
@@ -0,0 +1,10 @@
+import Foundation
+import os.log
+
+extension Logger {
+    private static var subsystem = Bundle.main.bundleIdentifier!
+
+    static let appState = Logger(subsystem: subsystem, category: "appState")
+    static let helperInstaller = Logger(subsystem: subsystem, category: "helperInstaller")
+    static let subprocess = Logger(subsystem: subsystem, category: "subprocess")
+}
diff --git a/Xcodes/Backend/Process.swift b/Xcodes/Backend/Process.swift
index 88cdf8c..fe96001 100644
--- a/Xcodes/Backend/Process.swift
+++ b/Xcodes/Backend/Process.swift
@@ -1,5 +1,6 @@
 import Combine
 import Foundation
+import os.log
 import Path
 
 public typealias ProcessOutput = (status: Int32, out: String, err: String)
@@ -32,16 +33,19 @@ extension Process {
                     }
                     
                     do {
-                        print("Process.run \(executable), \(input), \(arguments.joined(separator: " "))")
+                        Logger.subprocess.info("Process.run executable: \(executable), input: \(input ?? ""), arguments: \(arguments.joined(separator: ", "))")
+
                         try process.run()
                         process.waitUntilExit()
                         
                         let output = String(data: stdout.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
                         let error = String(data: stderr.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8) ?? ""
                         
-                        dump(process)
-                        print(output)
-                        print(error)
+                        Logger.subprocess.info("Process.run output: \(output)")
+                        if !error.isEmpty {
+                            Logger.subprocess.error("Process.run error: \(error)")
+                        }
+
                         guard process.terminationReason == .exit, process.terminationStatus == 0 else {  
                             DispatchQueue.main.async {
                                 promise(.failure(ProcessExecutionError(process: process, standardOutput: output, standardError: error)))
diff --git a/XcodesTests/Environment+Mock.swift b/XcodesTests/Environment+Mock.swift
index bf24ce5..ed91706 100644
--- a/XcodesTests/Environment+Mock.swift
+++ b/XcodesTests/Environment+Mock.swift
@@ -7,7 +7,6 @@ extension Environment {
         shell: .mock,
         files: .mock,
         network: .mock,
-        logging: .mock,
         keychain: .mock,
         defaults: .mock,
         date: Date.mock,
@@ -73,12 +72,6 @@ extension Network {
     )
 }
 
-extension Logging {
-    static var mock = Logging(
-        log: { print($0) }
-    )
-}
-
 extension Keychain {
     static var mock = Keychain(
         getString: { _ in return nil },
diff --git a/com.robotsandpencils.XcodesApp.Helper/ConnectionVerifier.swift b/com.robotsandpencils.XcodesApp.Helper/ConnectionVerifier.swift
index 6ad6af6..7ad5033 100644
--- a/com.robotsandpencils.XcodesApp.Helper/ConnectionVerifier.swift
+++ b/com.robotsandpencils.XcodesApp.Helper/ConnectionVerifier.swift
@@ -1,6 +1,7 @@
 // From https://github.com/securing/SimpleXPCApp/
 
 import Foundation
+import os.log
 
 class ConnectionVerifier {
     
@@ -12,19 +13,19 @@ class ConnectionVerifier {
         ]
         
         if SecCodeCopyGuestWithAttributes(nil, attributesDictrionary as CFDictionary, SecCSFlags(rawValue: 0), &secCodeOptional) != errSecSuccess {
-            NSLog("Couldn't get SecCode with the audit token")
+            Logger.connectionVerifier.error("Couldn't get SecCode with the audit token")
             return false
         }
         
         guard let secCode = secCodeOptional else {
-            NSLog("Couldn't unwrap the secCode")
+            Logger.connectionVerifier.error("Couldn't unwrap the secCode")
             return false
         }
         
         SecCodeCopyStaticCode(secCode, SecCSFlags(rawValue: 0), &secStaticCodeOptional)
         
         guard let _ = secStaticCodeOptional else {
-            NSLog("Couldn't unwrap the secStaticCode")
+            Logger.connectionVerifier.error("Couldn't unwrap the secStaticCode")
             return false
         }
         
@@ -34,7 +35,7 @@ class ConnectionVerifier {
     private static func verifyHardenedRuntimeAndProblematicEntitlements(secStaticCode: SecStaticCode) -> Bool {
         var signingInformationOptional: CFDictionary? = nil
         if SecCodeCopySigningInformation(secStaticCode, SecCSFlags(rawValue: kSecCSDynamicInformation), &signingInformationOptional) != errSecSuccess {
-            NSLog("Couldn't obtain signing information")
+            Logger.connectionVerifier.error("Couldn't obtain signing information")
             return false
         }
         
@@ -49,7 +50,7 @@ class ConnectionVerifier {
         if let signingFlags = signingFlagsOptional {
             let hardenedRuntimeFlag: UInt32 = 0x10000
             if (signingFlags & hardenedRuntimeFlag) != hardenedRuntimeFlag {
-                NSLog("Hardened runtime is not set for the sender")
+                Logger.connectionVerifier.error("Hardened runtime is not set for the sender")
                 return false
             }
         } else {
@@ -60,7 +61,7 @@ class ConnectionVerifier {
         guard let entitlements = entitlementsOptional else {
             return false
         }
-        NSLog("Entitlements are \(entitlements)")
+        Logger.connectionVerifier.info("Entitlements are \(entitlements)")
         let problematicEntitlements = [
             "com.apple.security.get-task-allow",
             "com.apple.security.cs.disable-library-validation",
@@ -72,7 +73,7 @@ class ConnectionVerifier {
         for problematicEntitlement in problematicEntitlements {
             if let presentEntitlement = entitlements.object(forKey: problematicEntitlement) {
                 if presentEntitlement as! Int == 1 {
-                    NSLog("The sender has \(problematicEntitlement) entitlement set to true")
+                    Logger.connectionVerifier.error("The sender has \(problematicEntitlement) entitlement set to true")
                     return false
                 }
             }
@@ -89,12 +90,12 @@ class ConnectionVerifier {
          
         var secRequirement: SecRequirement? = nil
         if SecRequirementCreateWithString(requirementString as CFString, SecCSFlags(rawValue: 0), &secRequirement) != errSecSuccess {
-            NSLog("Couldn't create the requirement string")
+            Logger.connectionVerifier.error("Couldn't create the requirement string")
             return false
         }
          
         if SecCodeCheckValidity(secCode, SecCSFlags(rawValue: 0), secRequirement) != errSecSuccess {
-            NSLog("NSXPC client does not meet the requirements")
+            Logger.connectionVerifier.error("NSXPC client does not meet the requirements")
             return false
         }
         
diff --git a/com.robotsandpencils.XcodesApp.Helper/Logger.swift b/com.robotsandpencils.XcodesApp.Helper/Logger.swift
new file mode 100644
index 0000000..3b39654
--- /dev/null
+++ b/com.robotsandpencils.XcodesApp.Helper/Logger.swift
@@ -0,0 +1,9 @@
+import Foundation
+import os.log
+
+extension Logger {
+    private static var subsystem = Bundle.main.bundleIdentifier!
+
+    static let connectionVerifier = Logger(subsystem: subsystem, category: "connectionVerifier")
+    static let xpcDelegate = Logger(subsystem: subsystem, category: "xpcDelegate")
+}
diff --git a/com.robotsandpencils.XcodesApp.Helper/XPCDelegate.swift b/com.robotsandpencils.XcodesApp.Helper/XPCDelegate.swift
index 37d7962..86a33301 100644
--- a/com.robotsandpencils.XcodesApp.Helper/XPCDelegate.swift
+++ b/com.robotsandpencils.XcodesApp.Helper/XPCDelegate.swift
@@ -1,4 +1,5 @@
 import Foundation
+import os.log
 
 class XPCDelegate: NSObject, NSXPCListenerDelegate, HelperXPCProtocol {
 
@@ -16,12 +17,12 @@ class XPCDelegate: NSObject, NSXPCListenerDelegate, HelperXPCProtocol {
     // MARK: - HelperXPCProtocol
     
     func getVersion(completion: @escaping (String) -> Void) {
-        NSLog("XPCDelegate: \(#function)")
+        Logger.xpcDelegate.info("\(#function)")
         completion(Bundle.main.infoDictionary!["CFBundleShortVersionString"] as! String)
     }
     
     func xcodeSelect(absolutePath: String, completion: @escaping (Error?) -> Void) {
-        NSLog("XPCDelegate: \(#function)")
+        Logger.xpcDelegate.info("\(#function)")
 
         guard URL(fileURLWithPath: absolutePath).hasDirectoryPath else {
             completion(XPCDelegateError(.invalidXcodePath))
@@ -55,7 +56,7 @@ class XPCDelegate: NSObject, NSXPCListenerDelegate, HelperXPCProtocol {
 // MARK: - Run
 
 private func run(url: URL, arguments: [String], completion: @escaping (Error?) -> Void) {
-    NSLog("XPCDelegate: run \(url) \(arguments)")
+    Logger.xpcDelegate.info("Run executable: \(url), arguments: \(arguments.joined(separator: ", "))")
     
     let process = Process()
     process.executableURL = url