Semaphr is a platform that helps your manage all your mobile versions, block access, notify users, or urge them to update. Works with iOS and Android apps, regardless of their tech stack. Semaphr offers a flexible messaging system that helps you to deliver personalized and prompt messages to your users. You can add a message title, and a description (including links), select a message type, preview your message, and deliver it to specific app versions at the right time by selecting the delivery schedule. Your messages will be displayed to all the apps with the selected version, regardless of the status of your backend service or your app's functionality.