Daily caps, account risk, CAPTCHAs and what employers see.
Automatic applying has costs that a pricing page does not show: a job board's rules on automation, an employer seeing the same person apply many times, a form that stops at a CAPTCHA or an emailed code. The pages here set out what each tool states about those limits, with the source and the day it was read.
The risks of auto apply tools as their own terms state them: applications sent without approval, account suspensions, shared logins, detection claims, refunds.