Do custom apps with custom backend deduct from automation limit?

I am part of a business with an Enterprise plan. We have quite a large automation limit, but I am wondering if I created a custom app and backend that does logic each time a comment is posted on an item, will it deduct from our automation limit?

I can understand that if you use standard monday.com automations or the workflow builder then those custom blocks will consume automation credits.

If i have a custom app that does all logic in a custom backend server and only communicated with Monday via the API, will it consume credits? Do those credits get deducted from my account as the app creator, or each users personal/business plan that installed the app?