If you're looking to understand more about Flash Express or their technology stack, Flash Express seems to be a courier service that utilizes technology for their operations, possibly including mobile apps for various stakeholders (customers, couriers, etc.). Their use of an Android app could facilitate tasks such as package tracking, delivery management, and communication between couriers and clients.
Note: The following is based on standard APK structure and similar logistics apps. Always analyze in an isolated environment. If you're looking to understand more about Flash
The link http://flashexpress.com points to a legacy development build of the Flash Express courier app, a logistics service operating in Thailand, the Philippines, and Laos. As an outdated version (v1.4.8) from a non-official source, it lacks current security updates, as modern, secure versions are found in official app stores, including the Google Play Store . Flash Express - App Store Always analyze in an isolated environment