The monthly plan price is fixed. The only variable is AI credits, the compute Joylo spends generating or changing code. Credits do not roll over. They cover hosting as well as building, and publishing deducts its credits upfront rather than metering quietly while the app runs. Hosting for what you already have live is covered by your monthly renewal, so a published app stays up. If you run out mid month, new builds pause until the reset or a top up, and nothing already serving users is affected. Human help is fixed price too. Expert Assist is $500 for 10 architect hours, an architect-led migration is $2,000 whatever it takes, and Production Support is a flat monthly fee. None of them is an hourly rate that grows on you.