I think I have written than more than a dozen times already :)
NoRoot Firewall for android devices. You make a Global Filter (aka firewall rule) that writes: asterisk.XYZ.com:asterisk and you are done with that specific tracker/advertiser. Sometimes they don't use URLs but IPs, in which case I take the extra 30 seconds to check who does the IP belong to on www.ipaddress.com and if it is a CDN, I allow it (only for the app), if it is MoPub, Adjust, etc. they get a royal block on 123.123.asterisk.asterisk:asterisk to get done with it.
NoRoot firewall also has a "Access Log" tab which shows which connections have gone through and which are rejected, so you can fine tune further.
NoRoot Firewall for android devices. You make a Global Filter (aka firewall rule) that writes: asterisk.XYZ.com:asterisk and you are done with that specific tracker/advertiser. Sometimes they don't use URLs but IPs, in which case I take the extra 30 seconds to check who does the IP belong to on www.ipaddress.com and if it is a CDN, I allow it (only for the app), if it is MoPub, Adjust, etc. they get a royal block on 123.123.asterisk.asterisk:asterisk to get done with it.
NoRoot firewall also has a "Access Log" tab which shows which connections have gone through and which are rejected, so you can fine tune further.
Edit: replaced asterisks with the word "asterisk"