JNESS' 그린아이넷 맘아이그린 PC관리 is a free Android app that offers parents a way to protect their children from harmful online content while also controlling the amount of time they spend on their PC. With this app, parents can block harmful websites, videos, and game sites, and set daily and weekly usage limits for each type of activity, including PC, gaming, internet, and messenger usage.

One of the standout features of this app is that it allows parents to monitor their children's PC usage remotely from their smartphone, ensuring that their children are safe even when they're not at home. In addition, the app provides detailed reports on their children's usage, including performance records, screenshots, and usage statistics.

Overall, if you're a parent looking for an easy and effective way to protect your children from harmful content and encourage healthy PC usage habits, then JNESS' 그린아이넷 맘아이그린 PC관리 is definitely worth checking out.