Small businesses get nickel-and-dimed by per-user pricing on helpdesks, forms, signatures and scheduling. One-time software makes the toolset a capital expense instead of a creeping payroll line.
The tool this job usually means renting is UptimeRobot, at $8/mo — roughly $96 a year, every year. Upwatch does the job for a one-time $99 — running on infrastructure you control.