DON'T PAY FOR IT - IT DOESN'T WORK
It's a fantastic concept - you input a recording, and it spits out the tabs and chords for it. Unfortunately, it doesn't work - the tabs come out incomplete, incorrect, and showing hand positions that no regular human will ever achieve. The tabs can be edited, but it's not an easy process, and it doesn't resolve the issue of missing sections.
This wouldn't be much of a problem if they had released it as a free platform while they're ironing out the kinks, but in typical techbro fashion they are already charging for it. You can either buy 10 credits, for which you'll get 10 useless tabs, or take on a subscription so you can get an unlimited amount of useless tab. They are blithely selling a product that they KNOW doesn't work yet. It's repugnant.
As an aside - I don't know if there are legal considerations for inputting copyrighted materials into an AI engine. If not, there may still be ethical consideration, depending on how they use the resulting upload.