You can get a full run down on what the app did here http://iphoneapplicationlist.com/2008/12/22/myrail-lite/ as I've said above I've been using this app for a long time and it was sad to see this appear on Twitter.
MyRail: We’re sorry to report that our license to distribute real-time train information from National Rail Enquiries is not being renewed.
MyRail: We regret that this service will have to be discontinued as of 31 March 2009. Thanks for all your interest and support
I think National Rail are missing a trick here unless they come up with an app which is as simple and easy to use as MyRail then I think its going to be a great part missing from my life and it won't make me travel by train anymore as I will not have upto moment information. Their Journey Planner is good but it shows too much you need something that is clean and elegant like MyRail was.
Update: There is a great article here by Rory Cellan-Jones http://www.bbc.co.uk/blogs/technology/2009/03/who_owns_train_times_or_th.html
"I'd received a press release promoting another train time iPhone application from - guess who - National Rail Enquiries. At the time I'd asked the press officer how the app compared to MyRail Lite - and been promised that it was far superior.
So last night I installed it and tried it out - and it was indeed very good, enabling you not just to check departure times but to plan a whole journey. But there's one catch - it costs £4.99, whereas MyRail Lite was free."
---£4.99 bloody hell, how can they justify making the information on when train are running or delayed so expensive. I think I'll be giving that one a miss