I first found out about KidzSearch on Google. I searched up Search Engines for Kids. I tried all of the search engines and I didn't find any search engine I liked except for KidzSearch. Later, my school technician told us about this site/app and put it on the school website. I told her that I already use it. Since then, I also found out about things like KidzTalk, KidzNet, KidzTube, Boolify, etc. and used it.
I have it on my phone, and I bookmarked the site on my school and home computer.
Okay so on Kiddle, for example if someone searches up "George Washington" it shows a page, "there's also a George Washington in the Kiddle encyclopedia". On KidzSearch, you have to click Wiki. This way it will be easier for kids to learn more about these kind of topics. Here is a screenshot, so you can understand.
By the way sorry for the point 0 thing. This was actually an answer to a post and I copied it, then I made a few edits to my answer.