I’ve used both the free and paid versions. The free plan is solid but limited. You can only upload audio files (not video), no bulk uploads, no fine tuning, and it maxes out at 30 minutes per file and one hour per day.
The paid plan is 9.99 a month and worth it if you want full video support, bulk uploads, sound strength control, and up to four hours of processing daily. You also get unlimited downloads and access to original recordings. Cancel anytime.
It has taken my rough audio and made it sound like it was recorded in a pro studio with a top mic.
If anything I said is unclear or you’re not familiar with a term, feel free to ask.