When my app crashes in live it would be nice to get emailed the stack trace/error info.
Does anything exist to do this?
I found honeybadger.io which looks about right but is this the best way and best option?
Another tip: You can also run an errbit server which is an open source version of Airbrake and use the airbrake gem to talk to it which is kind of nifty.
Looking at bugsnag and it looks very nice.
I dont think I can use the free plan on Heroku though?
Why not? You mean it's not an add-on?
Just an FYI, you don't have the use the Heroku addon. You can go straight to bugsnag and set it up yourself if you want. The addons are just there to make it slightly easier to setup.