I am using Leadberry for the third month now. Leadberry's database is too limited in my opinion, and can only identify very limited visitors. If i remove the filter, they identify lot of visitors as the internet service provider (of the visitor). We had better results in using UTM codes to identify visitors from our cold emails/outreach programs. Can live without this tool.
I raised my concerns multiple times over their chat (i am a paying customer), but they never respond (a simple acknowledgement itself is missing).