Google Play Billing vs Themida

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.

Themida is Windows software that protects applications against advanced reverse engineering and cracking. Its SecureEngine technology combines anti-debugger, anti-disassembly, anti-tracing, anti-breakpoint, and anti-memory-patching techniques. Code protection options include virtualization, encryption, mutation, metamorphic scrambling, and random garbage-code insertion. It protects native 32-bit and 64-bit EXE files and dynamic libraries in DLL, OCX, and BPL formats. XBundler can embed DLLs and data files, while custom DLL plugins can be embedded in the protected binary. Integration is available through SDK communication with the protection layer and command-line support. Developers can customize dialog text and icons shown by protected applications. A demo is available for evaluation, but demo versions cannot be registered and have reduced protections, including light virtualization, no string encryption, and a demo splash screen. Licenses are perpetual. Developer License costs €249 as a one-time purchase; Company License costs €499 as a one-time purchase. Renewal plans cost 79.00 EUR or €159 a year for existing customers.