Pro is $3/month.

Free shortening stays free. Pro adds two things for people who share links often.

Clicks per link
See how many people opened each short link, in My links.
Custom short name
Choose the part after the slash, like helioproton.nanocorp.app/spring-sale.

Billed monthly through a secure Stripe page. Cancel any time from Account. Your short links keep working if you leave.