diff --git a/Sources/mas/AppStore/Downloader.swift b/Sources/mas/AppStore/Downloader.swift
index 6435ff6..e95bb1c 100644
--- a/Sources/mas/AppStore/Downloader.swift
+++ b/Sources/mas/AppStore/Downloader.swift
@@ -14,17 +14,16 @@ import StoreFoundation
 ///
 /// - Parameters:
 ///   - appIDs: The IDs of the apps to be downloaded
-///   - purchase: Flag indicating whether the apps needs to be purchased.
-///     Only works for free apps. Defaults to false.
+///   - purchasing: Flag indicating if the apps will be purchased. Only works for free apps. Defaults to false.
 /// - Returns: A promise that completes when the downloads are complete. If any fail,
 ///   the promise is rejected with the first error, after all remaining downloads are attempted.
-func downloadAll(_ appIDs: [AppID], purchase: Bool = false) -> Promise<Void> {
+func downloadApps(withAppIDs appIDs: [AppID], purchasing: Bool = false) -> Promise<Void> {
     var firstError: Error?
     return
         appIDs
         .reduce(Guarantee.value(())) { previous, appID in
             previous.then {
-                downloadWithRetries(appID, purchase: purchase)
+                downloadApp(withAppID: appID, purchasing: purchasing)
                     .recover { error in
                         if firstError == nil {
                             firstError = error
@@ -39,10 +38,15 @@ func downloadAll(_ appIDs: [AppID], purchase: Bool = false) -> Promise<Void> {
         }
 }
 
-private func downloadWithRetries(_ appID: AppID, purchase: Bool = false, attempts: Int = 3) -> Promise<Void> {
-    SSPurchase().perform(appID: appID, purchase: purchase)
+private func downloadApp(
+    withAppID appID: AppID,
+    purchasing: Bool = false,
+    withAttemptCount attemptCount: UInt32 = 3
+) -> Promise<Void> {
+    SSPurchase()
+        .perform(appID: appID, purchasing: purchasing)
         .recover { error in
-            guard attempts > 1 else {
+            guard attemptCount > 1 else {
                 throw error
             }
 
@@ -54,9 +58,9 @@ private func downloadWithRetries(_ appID: AppID, purchase: Bool = false, attempt
                 throw error
             }
 
-            let attempts = attempts - 1
+            let attemptCount = attemptCount - 1
             printWarning((downloadError ?? error).localizedDescription)
-            printWarning("Trying again up to \(attempts) more \(attempts == 1 ? "time" : "times").")
-            return downloadWithRetries(appID, purchase: purchase, attempts: attempts)
+            printWarning("Trying again up to \(attemptCount) more \(attemptCount == 1 ? "time" : "times").")
+            return downloadApp(withAppID: appID, purchasing: purchasing, withAttemptCount: attemptCount)
         }
 }
diff --git a/Sources/mas/AppStore/SSPurchase.swift b/Sources/mas/AppStore/SSPurchase.swift
index cf712cd..a12a1c9 100644
--- a/Sources/mas/AppStore/SSPurchase.swift
+++ b/Sources/mas/AppStore/SSPurchase.swift
@@ -11,7 +11,7 @@ import PromiseKit
 import StoreFoundation
 
 extension SSPurchase {
-    func perform(appID: AppID, purchase: Bool) -> Promise<Void> {
+    func perform(appID: AppID, purchasing: Bool) -> Promise<Void> {
         var parameters: [String: Any] = [
             "productType": "C",
             "price": 0,
@@ -20,9 +20,11 @@ extension SSPurchase {
             "appExtVrsId": 0,
         ]
 
-        if purchase {
+        if purchasing {
             parameters["macappinstalledconfirmed"] = 1
             parameters["pricingParameters"] = "STDQ"
+            // Possibly unnecessary…
+            isRedownload = false
         } else {
             parameters["pricingParameters"] = "STDRDL"
         }
@@ -35,11 +37,6 @@ extension SSPurchase {
 
         itemIdentifier = appID
 
-        // Not sure if this is needed…
-        if purchase {
-            isRedownload = false
-        }
-
         downloadMetadata = SSDownloadMetadata()
         downloadMetadata.kind = "software"
         downloadMetadata.itemIdentifier = appID
diff --git a/Sources/mas/Commands/Install.swift b/Sources/mas/Commands/Install.swift
index 7247172..32f03fd 100644
--- a/Sources/mas/Commands/Install.swift
+++ b/Sources/mas/Commands/Install.swift
@@ -38,7 +38,7 @@ extension MAS {
             }
 
             do {
-                try downloadAll(appIDs).wait()
+                try downloadApps(withAppIDs: appIDs).wait()
             } catch {
                 throw error as? MASError ?? .downloadFailed(error: error as NSError)
             }
diff --git a/Sources/mas/Commands/Lucky.swift b/Sources/mas/Commands/Lucky.swift
index 400e5ef..dc57e41 100644
--- a/Sources/mas/Commands/Lucky.swift
+++ b/Sources/mas/Commands/Lucky.swift
@@ -66,7 +66,7 @@ extension MAS {
                 printWarning("\(appName) is already installed")
             } else {
                 do {
-                    try downloadAll([appID]).wait()
+                    try downloadApps(withAppIDs: [appID]).wait()
                 } catch {
                     throw error as? MASError ?? .downloadFailed(error: error as NSError)
                 }
diff --git a/Sources/mas/Commands/Purchase.swift b/Sources/mas/Commands/Purchase.swift
index bdb8a58..dab6d24 100644
--- a/Sources/mas/Commands/Purchase.swift
+++ b/Sources/mas/Commands/Purchase.swift
@@ -35,7 +35,7 @@ extension MAS {
             }
 
             do {
-                try downloadAll(appIDs, purchase: true).wait()
+                try downloadApps(withAppIDs: appIDs, purchasing: true).wait()
             } catch {
                 throw error as? MASError ?? .downloadFailed(error: error as NSError)
             }
diff --git a/Sources/mas/Commands/Upgrade.swift b/Sources/mas/Commands/Upgrade.swift
index 2770f39..94f8b50 100644
--- a/Sources/mas/Commands/Upgrade.swift
+++ b/Sources/mas/Commands/Upgrade.swift
@@ -46,7 +46,7 @@ extension MAS {
             )
 
             do {
-                try downloadAll(apps.map(\.installedApp.itemIdentifier.appIDValue)).wait()
+                try downloadApps(withAppIDs: apps.map(\.installedApp.itemIdentifier.appIDValue)).wait()
             } catch {
                 throw error as? MASError ?? .downloadFailed(error: error as NSError)
             }