| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| macOS | — | Yes |
| Android | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Personal firewalls | 8.7 (#3) | 7.7 (#11) |
| Spec score · Firewall Software | 8.1 (#33) | 7.3 (#67) |
| Free plan | Yes | Yes |
| Purpose | AFWall+ is an open-source firewall app that controls which apps can access the internet on rooted Android devices. | LuLu is a free, open-source firewall that alerts about and blocks unknown outgoing network connections. |
| Support | The project directs users to its FAQ, wiki, XDA forum, and GitHub issues for help. | The maker directs users to create bug reports through LuLu's GitHub repository. |