This is a good app for what it does -- just messages. However, its only good on iPhone. They should hire some freelancers from their site and have them build an iPad version that works in landscape mode. Im doing this review on an iPad pro, which would be a great place to use such an app, however Im stuck dealing w/ the iPhone version, which looks absurd on the iPad pro. Upwork is a great company. Its surprising that they dont seem committed to keeping up with technology that can be used to access their service (at least as of the day Im writing this message).
Skeegal about Upwork