Google Play Billing vs PELock

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.

PELock protects compiled 32-bit Windows applications against cracking, tampering, and reverse engineering, while providing software licensing tools. It protects Portable Executable formats including EXE, SCR, DLL, OCX, CPL, BPL, DPL, ACM, and AX. Anti-debugging methods detect cracking tools and block their actions. The license key manager handles users and keys, generates and verifies RSA-2048 keys, and can block illegally shared keys. Trials can be limited by days, executions, an expiration date, or minutes of use. A virtual DLL binder combines an application and libraries into one EXE, loading those libraries in memory without writing them to disk. SDK examples cover C/C++, Delphi, Lazarus, FreePascal, PureBasic, PowerBASIC, D, and Assembler. Plugins can add compression, detection, licensing checks, and loader functions. The maker lists Windows support from Windows 95 through Windows 10 and Server 2003 through 2012, with 32- and 64-bit support. Pricing starts at 59 one-time; listed licenses cost 159.00 USD or $299, paid once.