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CLUSTER BLOCKS-DEVICE-FIREWALL · 6 ENTRIES · EARLIEST ENTRY 2019-07-29

Android on-device privacy firewalls

This cluster comprises Android apps that block network access, ads, trackers, and harmful sites via a local VPN without requiring root or an external account. The dated entry history is sparse, with single entries in 2015-10, 2019-07, and 2023-12, followed by two entries in 2026-05 and 2026-06—too few and scattered to infer a clear trend. All three traction leaders (personalfirewallTacuns, NetBlocker, Acutis Firewall) report 0 stars, so none has a meaningful activity edge over the others.

Entry timeline

ENTRY TIMELINE

OCT 2015: 1JUL 2019: 1DEC 2023: 1JUN 2026: 1SEP 2026: 1OCT 2026: 1
OCT 2015OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 hand-coded · 5 unlabelled

Operator · 1 hobby · 1 indie · 1 commercial · 3 open source

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 6 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01personalfirewallTacuns0★18 daysliveindieAndroid firewall app that blocks ads, trackers, harmful websites, and apps on-device via a local VPN without root or accounts.
  2. 02Lockdown Privacy: AdBlock VPN0★1 molivecommercialPrivacy app that blocks trackers and ads across all apps using an on-device firewall and a secure no-logs VPN.
  3. 03ShizuWall0★1 moliveopen sourceAndroid firewall that blocks network access for selected apps without VPN, using local device permissions.
  4. 04NetBlocker0★1 mo—hand-codedhobbyAndroid app that blocks selected apps' internet access on Wi-Fi and mobile data through a floating window without using a VPN.
  5. 05NetGuard0★2 moliveopen sourceFirewall app that blocks internet access per application, with per-address rules and traffic logging, without root.
  6. 06Karma Firewall0★2 yrabandonedliveopen sourceMobile firewall app that blocks selected applications from accessing the internet to stop unwanted data collection and advertising traffic.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.