Web App - But Useful – Blood Donor American Red Cross Review

As an every-eight-weeks donor, I use this app pretty regularly. Most of the app is just a frontend to the site, but it is very useful/handy. The one drawback, if there is one, is which arm to use. Give an option so I can list which arm I donated with the previous time? I alternate, but can't remember after eight weeks!
Review by Dirty Goose on Blood Donor American Red Cross.