diff --git a/Mac/AppDelegate.swift b/Mac/AppDelegate.swift
index ad024b046..52fc0cbf9 100644
--- a/Mac/AppDelegate.swift
+++ b/Mac/AppDelegate.swift
@@ -817,7 +817,7 @@ internal extension AppDelegate {
 		guard let window = mainWindowController?.window else { return }
 		
 		do {
-			let theme = try ArticleTheme(path: filename)
+			let theme = try ArticleTheme(path: filename, isAppTheme: false)
 			let alert = NSAlert()
 			alert.alertStyle = .informational
 
diff --git a/Shared/ArticleStyles/ArticleTheme.swift b/Shared/ArticleStyles/ArticleTheme.swift
index e40bde46f..302c45a53 100644
--- a/Shared/ArticleStyles/ArticleTheme.swift
+++ b/Shared/ArticleStyles/ArticleTheme.swift
@@ -19,6 +19,7 @@ struct ArticleTheme: Equatable {
 	let path: String?
 	let template: String?
 	let css: String?
+	let isAppTheme: Bool
 	
 	var name: String {
 		guard let path = path else { return Self.defaultThemeName }
@@ -49,9 +50,11 @@ struct ArticleTheme: Equatable {
 		
 		let templatePath = Bundle.main.path(forResource: "template", ofType: "html")!
 		template = Self.stringAtPath(templatePath)!
+		
+		isAppTheme = true
 	}
 	
-	init(path: String) throws {
+	init(path: String, isAppTheme: Bool) throws {
 		self.path = path
 		
 		let infoPath = (path as NSString).appendingPathComponent("Info.plist")
@@ -68,6 +71,8 @@ struct ArticleTheme: Equatable {
 		
 		let templatePath = (path as NSString).appendingPathComponent("template.html")
 		self.template = Self.stringAtPath(templatePath)
+		
+		self.isAppTheme = isAppTheme
 	}
 	
 	static func stringAtPath(_ f: String) -> String? {
diff --git a/Shared/ArticleStyles/ArticleThemesManager.swift b/Shared/ArticleStyles/ArticleThemesManager.swift
index e2205240a..c23f1d7ae 100644
--- a/Shared/ArticleStyles/ArticleThemesManager.swift
+++ b/Shared/ArticleStyles/ArticleThemesManager.swift
@@ -48,6 +48,10 @@ final class ArticleThemesManager: NSObject, NSFilePresenter {
 		}
 	}
 
+	var themes: [ArticleTheme] {
+		return themeNames.compactMap { articleThemeWithThemeName($0) }
+	}
+	
 	init(folderPath: String) {
 		self.folderPath = folderPath
 		self.currentTheme = ArticleTheme.defaultTheme
@@ -61,15 +65,6 @@ final class ArticleThemesManager: NSObject, NSFilePresenter {
 			abort()
 		}
 		
-		let themeFilenames = Bundle.main.paths(forResourcesOfType: ArticleTheme.nnwThemeSuffix, inDirectory: nil)
-		let installedThemes = readInstalledThemes() ?? [String: Date]()
-		for themeFilename in themeFilenames {
-			let themeName = ArticleTheme.themeNameForPath(themeFilename)
-			if !installedThemes.keys.contains(themeName) {
-				try? importTheme(filename: themeFilename)
-			}
-		}
-
 		updateThemeNames()
 		updateCurrentTheme()
 
@@ -98,11 +93,6 @@ final class ArticleThemesManager: NSObject, NSFilePresenter {
 		}
 		
 		try FileManager.default.copyItem(atPath: filename, toPath: toFilename)
-
-		let themeName = ArticleTheme.themeNameForPath(filename)
-		var installedThemes = readInstalledThemes() ?? [String: Date]()
-		installedThemes[themeName] = Date()
-		writeInstalledThemes(installedThemes)
 	}
 	
 	func deleteTheme(themeName: String) {
@@ -118,8 +108,14 @@ final class ArticleThemesManager: NSObject, NSFilePresenter {
 private extension ArticleThemesManager {
 
 	func updateThemeNames() {
-		let updatedThemeNames = allThemePaths(folderPath).map { ArticleTheme.themeNameForPath($0) }
-		let sortedThemeNames = updatedThemeNames.sorted(by: { $0.compare($1, options: .caseInsensitive) == .orderedAscending })
+		let appThemeFilenames = Bundle.main.paths(forResourcesOfType: ArticleTheme.nnwThemeSuffix, inDirectory: nil)
+		let appThemeNames = Set(appThemeFilenames.map { ArticleTheme.themeNameForPath($0) })
+
+		let installedThemeNames = Set(allThemePaths(folderPath).map { ArticleTheme.themeNameForPath($0) })
+
+		let allThemeNames = appThemeNames.union(installedThemeNames)
+		
+		let sortedThemeNames = allThemeNames.sorted(by: { $0.compare($1, options: .caseInsensitive) == .orderedAscending })
 		if sortedThemeNames != themeNames {
 			themeNames = sortedThemeNames
 		}
@@ -130,11 +126,20 @@ private extension ArticleThemesManager {
 			return ArticleTheme.defaultTheme
 		}
 		
-		guard let path = pathForThemeName(themeName, folder: folderPath) else {
+		let path: String
+		let isAppTheme: Bool
+		if let appThemePath = Bundle.main.url(forResource: themeName, withExtension: ArticleTheme.nnwThemeSuffix)?.path {
+			path = appThemePath
+			isAppTheme = true
+		} else if let installedPath = pathForThemeName(themeName, folder: folderPath) {
+			path = installedPath
+			isAppTheme = false
+		} else {
 			return nil
 		}
+		
 		do {
-			return try ArticleTheme(path: path)
+			return try ArticleTheme(path: path, isAppTheme: isAppTheme)
 		} catch {
 			NotificationCenter.default.post(name: .didFailToImportThemeWithError, object: nil, userInfo: ["error": error])
 			return nil
@@ -178,14 +183,4 @@ private extension ArticleThemesManager {
 		return nil
 	}
 	
-	func readInstalledThemes() -> [String: Date]? {
-		let filePath = (folderPath as NSString).appendingPathComponent("InstalledThemes.plist")
-		return NSDictionary(contentsOfFile: filePath) as? [String: Date]
-	}
-	
-	func writeInstalledThemes(_ dict: [String: Date]) {
-		let filePath = (folderPath as NSString).appendingPathComponent("InstalledThemes.plist")
-		(dict as NSDictionary).write(toFile: filePath, atomically: true)
-	}
-	
 }
diff --git a/iOS/Settings/ArticleThemeImporter.swift b/iOS/Settings/ArticleThemeImporter.swift
index 5eb8c8a6f..bfc8ff23a 100644
--- a/iOS/Settings/ArticleThemeImporter.swift
+++ b/iOS/Settings/ArticleThemeImporter.swift
@@ -11,7 +11,7 @@ import UIKit
 struct ArticleThemeImporter {
 	
 	static func importTheme(controller: UIViewController, filename: String) throws {
-		let theme = try ArticleTheme(path: filename)
+		let theme = try ArticleTheme(path: filename, isAppTheme: false)
 		
 		let localizedTitleText = NSLocalizedString("Install theme “%@” by %@?", comment: "Theme message text")
 		let title = NSString.localizedStringWithFormat(localizedTitleText as NSString, theme.name, theme.creatorName) as String