Do Heroku Scheduler tasks cost money?

Question

I've been reading through Heroku's documentation but just found it plain confusing. I have an app up that has both a web-based front-end (with web process) and a task that's set to run every day at midnight by Heroku Scheduler (shows up on heroku ps as run.1).

So, my heroku ps looks like this:

Process  State       Command -------  ----------  ------------------------------------ run.1    up for 21h  python webpage/listings.py web.1    up for 8m   python ./manage.py runserver 0.0.0.. 

What I'm trying to figure out is, is this considered two dynos? Is the run task considered a background task?

Main question: Will this cost money?

Answer 1

Yes, a Heroku Scheduler will accrue usage and will cost money if you go over your 750 free dyno-hours you are given per app each month. As long as you keep within that limit, you won't be charged.

Scheduler runs one-off dynos, which accrue usage just like regular dynos. They will appear with a “scheduler” dyno type in your Heroku invoice.

Answer 2

There is 750 of free hours.

In the billing, dynos are divided in four groups: worker (background dynos), web dynos, rake and one-off-process (when executing "heroku run", for example used by the scheduler).

More at https://devcenter.heroku.com/articles/usage-and-billing