Most brew loggers are a database you type into: numbers in, the same numbers back out. Perco answers back. The timer runs your actual recipe stage by stage, on the lock screen while you pour. The charts show which ratio your own ratings prefer and when each bean peaks after roast. Every bean you log mints its own passport stamp, generated on device from the bag. Free core forever on web and iPhone, full export, and it imports your backup from other apps.
