Credits pay for writing affirmations with AI and turning your script into voice audio. The generator shows its cost before you start. Voice synthesis shows an estimate before the run, then charges only for work completed.
These actions do not use credits: previewing, mixing, panning, looping, changing track length, rendering with the regular Render button, re-rendering your listening copy and recording your own voice. Once a script is synthesized, you can reshape the mix without another synthesis charge. The one optional paid render is handing the job to the studio server: one credit per track minute (20 minimum), returned in full if it fails or you cancel.
Paid once, stays yours: every line you have paid to synthesize is remembered with your account. The same line is not charged again when the voice and speaking speed stay the same, even on another device.