Latest 0.2.1
License MIT
Platforms ios 9.0
Frameworks UIKit

💂‍♀️ AppGuard

CI Status


AppGuard is a guard 💂‍♀️ for your iOS app, to check / force users to update your app or show what changed.



  • iOS 9.0+
  • Swift 4.2+
  • Xcode 10.0+


To run the example project, clone the repo, and run pod install from the Example directory first.


StarsKit is available through CocoaPods. To install
it, simply add the following line to your Podfile:

pod 'AppGuard'

Third party dependencies

Today we have third parties dependencies, but the purpose is to avoid them the most.

We also wan to have a quick available library and significant customization, we use one dependency:

  • Jelly: a simple UI component to simplify the rating transition display

Description & features

AppGuard offers three default behaviors for your app to:

  1. Check and show to the user if a new version of your app have to be downloaded (mandatory update).
  2. Check and show to the user if a new version of your app should be downloaded (recommandated update).
  3. Show to the user what’s new in the last version (update informations).

By a mecanism of revival displays, blocked or dimissable pop-up, the user will / may have to update your app according to the informations and actions displayed.

Features list

  • [X] Static configuration strings
  • [X] Cocoapods integration
  • [X] Default & configurable step transitions
  • [X] Default display algorithm behavior
  • [X] Customizable fonts, text & tint colors
  • [X] Screen actions callbacks
  • [X] Configurable with dictionary/data or remote URL: everything you want!
  • [X] Overridable layouts
  • [X] Lifecycle display events ([will/did]appear/disappear)
  • [X] Configurable key for parsing
  • [X] Firebase extension to bind Remote Config to StarsKit data
  • [ ] Additional condition checking on the default check
  • [ ] Carthage integration
  • [ ] Use localizable or configuration strings
  • [ ] Default localizable strings :
    • [ ] EN
    • [ ] FR
  • [ ] Overridable localizable strings
  • [ ] Customizable display algorithm behavior

Configurable metrics for display

You can specify metrics to trigger the default display behavior or use your own one.

  • [X] Disable/enable the component
  • [X] Version code (bundleVersion)
  • [X] Static configuration strings
  • [X] Maximum of days between display
  • [X] Mandatory type: screen properties
  • [X] Recommanded type: Feedback screen properties
  • [X] Changelog type: Store review screen properties

Default usage

Init app guard

// Simply use the prepare method for default configuration properties

// Configure the dataSource
AppGuard.default.dataSource = self

// And optionnaly the uiDelegate
AppGuard.default.uiDelegate = self

Implement the datasource

It’s necessary to implement it to indicate the presenter controller to AppGuard and optionnally do something with the UIImageView.

// MARK: - AppGuardDataSource
extension ViewController: AppGuardDataSource {
  func configureImageView(_ imageView: UIImageView?) {

    // Do anything with the UIImageView, 
    // 1- Download an Image with Kingfisher
    // 2- Add a Lottie animated subview on it


  func guardPresenterController() -> UIViewController? {
    return self


Implement the UI delegate

The UI delegate will send you lifecycle and user interaction events.

It’s strongly recommanded to implement didChooseLater: and didChooseAction:.

// MARK: - AppGuardUIDelegate
extension ViewController: AppGuardUIDelegate {
  func guardControllerWillAppear(for context: AppGuardContextType) {

  func guardControllerDidAppear(for context: AppGuardContextType) {

  func guardControllerWillDisappear(for context: AppGuardContextType) {

  func guardControllerDidDisappear(for context: AppGuardContextType) {

  func didChooseLater(for context: AppGuardContextType) {

  func didChooseAction(for context: AppGuardContextType) {
    if context == .mandatoryUpdate || context == .recommandedUpdate {
      UIApplication.shared.openURL(URL(string: "<your app ID>")!)


Update the AppGuard configuration

AppGuard use a simple Dictionnary data to update its configuration.

let configurationData // a [String: Any?] instance from JSON file or static dictionnary or anything else
AppGuard.default.updateConfig(from: configurationData)

// Ask the guard 💂‍♀️ if we can pass 

// You can force it too 💂‍♀️🤷‍♂️
AppGuard.default.displayUpdateStatus(forced: true)

Custom keys binding

ℹ️ You can optionnaly specify the keys binding with the AppGuardConfigurationKeysBinder, to bind your source configuration to the AppGuard configuration. By default, the AppGuardConfigurationKeys rawValues will be used.

Imagine that you have a custom JSON structure like that:

  "my_deeplink_key": "",
  "my_dialog_type_key": 1,
  "my_content_key": "Custom content text",
  "my_action_label_key": "Custom action label",
  "my_changelog_content_key": "Custom changelog text",
  "my_title_key": "Custom title",
  "my_imageurl_key": "Custom image URL",
  "my_laterButtonLabel_key": "Later",
  "my_maxDaysBetweenDisplay_key": 3,
  "my_versionCode_key": 2

Change the default keys binding with the AppGuardConfigurationKeysBinder:

let binding: [String: String?] = [AppGuardConfigurationKeys.deeplink.rawValue: "my_deeplink_key",
                                      AppGuardConfigurationKeys.dialogType.rawValue: "my_dialog_type_key",
                                      AppGuardConfigurationKeys.content.rawValue: "my_content_key",
                                      AppGuardConfigurationKeys.actionButtonLabel.rawValue: "my_action_label_key",
                                      AppGuardConfigurationKeys.changelogContent.rawValue: "my_changelog_content_key",
                                      AppGuardConfigurationKeys.title.rawValue: "my_title_key",
                                      AppGuardConfigurationKeys.imageUrl.rawValue: "my_imageurl_key",
                                      AppGuardConfigurationKeys.versionCode.rawValue: "my_versionCode_key"]



View controller customization

You can simply override the .xib name of default controllers:

  • AppGuardChangelogViewController
  • AppGuardUpdateViewController

For instance, create a AppGuardChangelogViewController.xib with the custom file’s owner set to the StarsKit module. IBOutlets are optionnals so you decide what to override or not.

Don’t forget the IBAction links!


NB: UIViewController custom classes support will be available soon.

UI customization – AppGuardGraphicContext

The AppGuardGraphicContext can be set with your own values.

AppGuard.default.graphicContext.actionButtonBackgroundColor = UIColor.ex.fromHexa("#17b8c5")
AppGuard.default.graphicContext.jellyCustomTransition = myCustomJellyPresentation
AppGuard.default.graphicContext.buttonCornerRadius = 5

Customizable properties are:

  • cornerRadius: CGFloat
  • roundedButton: Bool
  • actionButtonBackgroundColor: UIColor?
  • actionButtonTitleColor: UIColor
  • actionButtonFont: UIFont
  • laterButtonBackgroundColor: UIColor?
  • laterButtonTitleColor: UIColor
  • laterButtonFont: UIFont
  • titleFont: UIFont
  • titleColor: UIColor
  • contentFont: UIFont
  • contentColor: UIColor
  • image: UIImage?
  • jellyCustomTransition: JellyPresentation

Transitions & display (Jelly)

AppGuard uses Jelly fro customizable transitions. You can specify your own via the jellyCustomTransition property in the AppGuardGraphicContext.


Go to Jelly repo for more information.

Strings customization (Coming Soon)

You can use the configurations strings or the Localizable ones, which you can override to in your app bundle.

Use Firebase Remote Config


If your app already use Firebase, why not use the Firebase Remote Config feature?
AppGuard will be able to convert your associated Firebase remote configuration object to a readable data dictionnary for itself 👌.


Add the Firebase Podspec

pod 'AppGuard/FirebaseRemoteConfig'

// Bind the properties keys if needed before 
// or use the default ones in the remote config

let remoteConfig = RemoteConfig.remoteConfig()
remoteConfig.fetch(withExpirationDuration: 1.second) { (status, _) in
    AppGuard.default.updateConfig(from: remoteConfig)


Made in 🇫🇷 by the Smart&Soft iOS Team.


AppGuard is available under the MIT license. See the LICENSE file for more info.

Latest podspec

    "name": "AppGuard",
    "version": "0.2.1",
    "summary": "AppGuard is a guard ud83dudc82u200du2640ufe0f for your iOS app, to check / force users to update your app or show what changed.",
    "homepage": "",
    "license": {
        "type": "MIT",
        "file": "LICENSE"
    "authors": {
        "Smart&Soft": "[email protected]"
    "source": {
        "git": "",
        "tag": "0.2.1"
    "social_media_url": "",
    "swift_version": "4.2",
    "platforms": {
        "ios": "9.0"
    "default_subspecs": "Core",
    "frameworks": "UIKit",
    "subspecs": [
            "name": "Core",
            "dependencies": {
                "Jelly": [
                    "~> 1.2.0"
            "source_files": [
            "name": "FirebaseRemoteConfig",
            "dependencies": {
                "AppGuard/Core": [],
                "Firebase/RemoteConfig": [
                    "~> 4.10"
            "source_files": "AppGuard/Classes/Firebase/**/*.{swift}"

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