I'm currently using 4 rank trackers at the moment RankTracker is my favourite one out of the group. It's hard to find a rank tracker that ticks all the boxes but this Saas is great if your looking for a tool that has:
- Great User Interface
- Quick loading times of rank tracking data
- Local 3 pack results
- Awesome roadmap of new features coming soon, can't wait for the mobile app
- Ability to discover keywords, & compare metrics via daily, weekly, and monthly. This is actually very important for me so I can see the cause and effect of different tactics.

One thing I wish it had more is limits. I haven't migrated all my projects so far but I try and be a bit more selective on the amount of search engines I want to track. I get it from a businesses point of view as it's costly to pull data. Would be great if the limits were increased but otherwise it's a solid product. Don't think twice about it, this is the rank tracker you've been looking for.