NexIO by Nexudus app for iPhone and iPad
NexIO is a companion app for your Nexudus account.
It lets you use an iPad device to collect visitor information as well as to let members check in and out of the space. Visitors can notify their hosts as they arrive to the space.
NexIO has also an "Events" mode so you can list all your up-coming events. Users can register for any of the events directly within the app.