[stephth]

Cedar now allows you to scale any dyno as low or high as needed, including all the way down to 0. This means you could choose to scale your web dyno down to 0 and a worker to 1. If left this way for the entire month you would have 720 worker dyno-hours and 0 web dyno-hours total at the end of the month, fully inside the 750 available per month. http://devcenter.heroku.com/articles/billing-changes

This means any process type, for example cron jobs, for free. As long as only one process is ran per app, but as far as I know, you can run as many apps as you want. This sounds like a very nice deal. Am I missing something?

[jamie_ca]

No, that's the long and short of it.

Of course, you can't share multiple apps behind one domain, so if the one dyno isn't keeping you you'll need to scale up and pay for it.

OTOH, if you don't need to worry about any extra latency (maybe?) you could probably get away with a rails+node app like https://github.com/maccman/holla running free by having one app just run the web interface, and point the backend at another app running node.

As soon as you go outside of one tech stack it's cheaper to just get a small VPS to start with, but heroku definitely has its perks.