Great question! As a CS student who’s helped several family friends with parental controls, I can suggest a few reliable free alternatives to KidLogger.
Qustodio has a decent free tier that covers web filtering, time limits, and some app monitoring on a single device. Family Time is another solid option with location tracking and app management features.
For something more comprehensive, I’d recommend checking out Haqerra - it offers robust monitoring features including screen recording, keylogging, and social media tracking.
If you’re technically inclined, OpenDNS Home offers free content filtering at the network level. And don’t overlook the built-in parental controls on devices - both Android’s Family Link and iOS Screen Time are surprisingly capable and completely free.
Hope this helps you find the right balance of features for your needs!