I've been using Rankwatch at my agency for almost a year now.

Here's what we love the most about Rankwatch:
- Account Management: We use the white-labeled dashboards to give our clients a real-time view of keyword data, and saves us countless number of hours in generating keyword reports. We've also turned-on the scheduled email report to send weekly reports automatically.

- Pre-sales: We use Rankwatch to generate pre-sales audit with to engage and provide value to our prospects, and convert them as clients. We also use the competitor analysis as a bait to get prospects interested to sign up with us immediately.

- Agency Dashboard: This gives an overall view of all campaigns to see the projects that needs attention.

- Email alerts: Whenever there's a major fluctuation in keyword ranking, we get email alerts - for eg: when the keyword on 1st page falls to 2nd page. Helps us take action on optimizing the site.

- Keyword Research: We like the keyword suggestions, especially the low-hanging fruits suggestions to focus on quick wins.

What needs improvement:
- There has been rare/occasional bugs in the tool: however, the support team always acted quickly on them whenever we reported it.

We use RankWatch, SEMRush, ahrefs, Majestic on monthly subscription.

I feel that at the price of $49 lifetime, this deal is certainly worth it. I wish it was stackable, though.

Thanks,
Rk