Heroku changing up dyno pricing Monday, 30 March 2015 Heroku is trialling new pricing levels for their dynos. Here’s the verbatim text they gave: Free – Experiment in your own dev or demo app with a web and a worker dyno for free. Sleeps after 1 hr of inactivity. Active up to 12 hours a day. No custom domains. 512 MB RAM. Hobby – Run a small app 24×7 with the Heroku developer experience for $7/dyn