best cost efficient rank tracker managing many websites?

do you have any recommendation on what's the best cost efficient rank tracker managing many websites?
wordpress sites.

I think ahrefs and rank math are an efficient ranking tool

also, you can manage multiple sites with that tool.

the rank tracker plugin from Scrapebox costs only $27 once-off payment for tracking unlimited keywords and sites. But the downside is that you obviously need to have SB, which costs I believe $67 (or I think they've increased to $77) if you buy it directly from BHW.

Oh, and you will also need a ton of proxies if you're going to want to check 1000s of keywords of 100s of sites daily... and it's also not flashy, but then again, nothing about SB is flashy, so...

So yeah, despite of how barebones and ugly it is, I still think that in terms of cost / value ratio SB's rank tracker is the best, especially when you can so so many other things with SB..

But if SB is not an option for you, I think SerpRobot is the next best thing (but they've also raised the prices, too, so I'm not sure that it's as cost efficient as it used to be)

You may try Semrush and Ahrefs.

I use serpmojo app, check it out.