I give it 1 star for a bad experience about how ahrefs charges by credit. Honestly, ahrefs has great search SEO, I really like it. However, the credit is a joke. I don't know who is thinking of using it for search tools. Please see Semrush's price. I bought a Lite and ran out of 500 credit for 4 days, the standard plan is only 600. Sorry, I moved to Semrush.
