If your employer uses ADP for payroll or benefits, you need the ADP Mobile app. I hate to throw out a conclusion at the beginning of any review, but that's what I think every time I check out a feature or fire it up to see how something is done while I'm writing this, so that's where I'll begin. And that's coming from someone who was skeptical of the need for an app like this in the first place.
A lot of companies use a service that provides payroll, benefits management, and human resources from providers like ADP. It makes sense for a business owner who doesn't want to hire a full staff to help take care of existing employees and can just get those services from a group of pros. For employees, though, it means that you just can't pop in a few cubicles down or catch someone at lunch to discuss your pay or get a vacation day approved. For that, you need a way to "talk" to those human resource providers and planners. The ADP Mobile app is a great way to do it if your employer uses ADP for resource management.