Compare software

NetGuardKarma Firewall
Freemium

Free and open source. Some features are unlocked by an in-app purchase.

 Free

Free and open source under Apache-2.0.

Android Android
  • Per-app blocking with separate Wi-Fi and mobile rules, without root
  • Live traffic log showing exactly what each app contacts
  • Blocks traffic by app
  • Does not require internet permission
  • Occupies the VPN slot, so it cannot run alongside a real VPN
  • Some features are unlocked by an in-app purchase
  • Android only
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: Apache-2.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.