I have a Sage 100 customer that uses it. There is an export function that we setup and then use VI to import to Sage 100 payroll (inegrated pass through to Sage 100 Job Cost). This is a contractor that has workers that work offsite, Each employee, using a smart phone, enters the job# and the time they worked which gets captured by day and by job. We set this up probably five years ago. It was reasonably easy to set up but there was a learning curve and some testing involved.
At the time, we also looked at Insperity, which I preferred, but the end user chose TimeClockPlus because it was less expensive and still did the basics of what they were looking for.