I agree re: checksumming. Regarding Android's flexibility, I've written an obfuscator (on another Java-based platform) that took a DSL and generated half the c

I agree re: checksumming. Regarding Android's flexibility, I've written an obfuscator (on another Java-based platform) that took a DSL and generated half the code in Java and half in C, intertwining the computation between the two processors via IPC.