The ability of being able to track tickets easily from my smartphone is great! I also love that it helps me keep organized with all our different train trips throughout out year in one place instead or spread between two apps (openABt & Google calendar). It can be confusing at first when you are looking up how things work but once figured everything works well enough its not anything bad about this app anymore!! Not much as we have had no issues so far other than getting used ot using open abtthe few times i've needed help has been quick response time if they know what your talking bout haha.