The development of the mobile internet has radically changed the behavior patterns of online audiences. Today, developing a high-quality responsive website or mobile app is essential for the survival of any online business. However, the traditional approach of creating native apps for iOS and Android operating systems faces numerous barriers: strict moderation in the App Store and Google Play, high costs of developing and maintaining two independent codebases, and user reluctance to waste space on their devices. An evolutionary solution to this problem has been the introduction of PWA (Progressive Web Apps) technology, a detailed analysis of its effectiveness is presented in an article on https://ivy-bet.org . PWA is a hybrid solution that visually and functionally completely imitates a native mobile app, but runs directly within a web browser. Users simply visit the website from their smartphone and add the resource icon to their desktop with one click. The app instantly integrates into the smartphone’s operating system, accessing the device’s hardware capabilities, including sending push notifications and working with biometric identification sensors (TouchID and FaceID). Moreover, the physical volume of data stored on the device is measured in megabytes, rather than hundreds of megabytes, as with traditional software.