A free, offline command-line tool that checks transaction logs for a specific silent failure: a transaction recorded as complete while the account balance never actually changed, with nothing flagging it. Runs entirely on your machine, no data leaves your computer. Built as part of CIF (Chronological Input Failure), a framework for chronological integrity in payment systems. Tested honestly on real PaySim data, including two dataset quirks I had to catch and fix before trusting the results.