Code Virtualizer vs Google Play Billing

Code Virtualizer is a code-protection tool for developers seeking to make selected application, library, or driver code harder to reverse engineer. It transforms x86, x64, or ARM64 instructions into virtual opcodes interpreted by an internal virtual machine; each protected application receives its own opcodes and machine. It supports native PE, ELF, and Mach-O files, including executables, services, DLLs, shared objects, and device drivers. Developers mark protected sections with macros from VirtualizerSDK.h. Listed capabilities include multiple virtual machines, code relocation, an advanced mutation engine, and command-line protection. The maker says the product works with any compressor or protector. It runs on Windows, macOS, and Linux. A demo is available but cannot be registered; it offers light virtualization, omits string encryption, mutate macros, and compressed virtual machines, and adds a demo splash screen. The Developer License (x86/x64) costs €199 as a one-time purchase, and other licenses are listed for different developer counts and ARM64 use. Purchases include one year of updates and email support.

Google Play Billing lets developers sell digital products and content in Android apps through one-time purchases or subscriptions. It is for digital items; developers selling physical goods or services are directed to the Google Pay SDK. One-time products may be consumable for repeat purchases or non-consumable for a lasting benefit, and can grant permanent access or a particular non-renewable use. Subscriptions grant defined benefits for a set period and support base plans, offers, prepaid plans, and add-on entitlements. The Play Billing Library connects an Android app with Google Play Services to retrieve localized offerings and launch purchase flows. Google recommends a secure backend using the Play Developer API for purchase verification and subscription management. That API can check purchase status and modify or cancel recurring purchases. Cloud Pub/Sub delivers notifications about changes to Google Play-managed subscriptions. Purchases that are not acknowledged within three days are automatically refunded. Google says service fees vary by developer and transaction; its overview says 97% of developers distribute apps and use Google Play at no charge, and 99% of developers subject to a service fee are eligible for a fee of 15% or less through available programs. The listed plan is free.