Much maintenance software is designed around buildings. A building stays where it is, ages on the calendar, and is serviced on a schedule that rarely changes. That model works for a boiler room or a set of rooftop units.
A fleet of machines behaves differently. An excavator on double shifts can pass a service interval in weeks while an identical one sits parked. A truck is measured in kilometres, a loader in engine hours, and both move between sites. On top of that, many of these assets carry certificates that have to stay current. Calendar-only reminders cannot describe that reality, so Zerk plans around meter readings, dates and documents together.
If you want to see the meter-driven side in depth, read how preventive maintenance by engine hours and kilometres works in Zerk.