This disclosure describes systems and associated processes that enable an application provider to tailor the testing of an application provided by a developer based on a developer trust level or confidence level. The first switch actuator component is used when the powerhead is being used in a handheld cleaning mode. The motor is operable to drive the cutter elements so that the cutter elements shred the articles into shredded particles. A switch block coupled to the first and second capacitances is configured to couple during a first phase a reference input node to the first and second capacitances and to the first amplifier input node.