Every account starts with a 30-day free trial with every feature unlocked. You are not charged until the trial ends, and you can cancel anytime before then.
Only the price. Monthly is $8 a month. Yearly is $76.80, billed once a year, which works out to $6.40 a month and saves 20%.
FIYR connects to banks, credit cards, loans and investment accounts through Plaid, and you can import transactions from a CSV file. Your FIRE date, budgets and net worth are all calculated from those real numbers.