I have an app on Heroku which is being used by few users. However, I notice there are some data issues which i\'d like to fix and stop the app in the mean time so users don\
To add to the answers above: if you want to stop Dyno using admin panel, the current solution on free tier:
Hope this helps.
From the Heroku Web
Dashboard => Your App Name => Resources => Pencil icon=> Flip the switch => Confirm
If you are using eclipse plugin, double click on the app-name in My Heroku Applications. In Processes tab, press Scale Button. A small window will pop-up. Increase/decrease the count and just say OK.