KWHero

Positive:
- nice UI
- I saw a few tutorials about the tool and would have liked to use it

Negative:
- did some experiments. Unfortunately, it doesn't seem to be ready for the German market.
For example, "online marketing handwerk" does not produce any results in keyword research. If I enter that into Ranklytics, I get a search volume of 110 and medium competition. If I enter that into KWFinder, I get a search volume of 120 and keyword difficulty of 12.