NaturalReader has two different products
NaturalReader's personal online reader handles reading workflows and has different usage terms from its commercial AI Voice Generator. Its commercial help documents MP3, WAV, SRT, VTT, and separated audio exports. Separate clips and captions are therefore not unique to TTS Lines.
TTS Lines starts with a pasted script. It splits that script into lines you can edit, move, and regenerate locally, then download as a full MP3 or WAV, or a ZIP of MP3 clips.
Choose by input and output
If your input is a PDF, web article, or book you want to listen to, NaturalReader's reading product is built for that. If you need a commercial production studio, compare its commercial product and current terms directly.
If your input is a short script and your output is a few editable narration clips, try TTS Lines first. The local model needs a large first download; it is not the best fit for every device.
Check rights and current plans
NaturalReader says audio from its personal product is for personal use, while its commercial product is separate. Check its current terms for your use. This page does not judge licensing rights for either tool or quote plan prices that may change.