Originally Posted by Niketa
Sorry if this is a nub question, but it's requiring me to put my credit card information in to use this app on Heroku. Will I be charged for using this app? Or is it basically just there to stay on file and I shouldn't get charged (using only this app)?
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Heroku does indeed require a credit card when registering, but don't worry, unless you're making a large application, you won't ever get charged for anything.
They charge for something called "dynos", which are basically instances of virtual machines, and you can increase the amount and power for each application you've got.
This app is very small, it will never require anything serious, so go with the default choice when creating an app (ONE dyno, 1X power), as seen in this screenshot, and this setup is completely free, no hidden fees or anything:
