🌞 Hikari AdBlock

Free, open-source, no-root ad blocker for Android.

System-wide ad, tracker and malware blocking over a local full-tunnel VPN.

Built with Kotlin, Jetpack Compose (Material 3) and a Go TUN stack.

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📥 Download

Grab the latest APK — one click:

New here? Head to the Releases page and download app-universal-release.apk (works on every phone — if you don't know your CPU, pick this one). On most modern phones app-arm64-v8a-release.apk is a smaller download.

⚠️ Before installing an update, uninstall the older Hikari AdBlock first (each release is signed with its own key, and Android will refuse to overwrite a different signature).

📸 Screenshots

Home — protection status & stats	Filter Sets — ad-blocking filter lists	Domain Rules — whitelist / blocklist
Whitelisted Apps — per-app control	Settings — VPN, Root & Shizuku modes, YouTube ad blocking

Changelog

See the full, per-version changelog on the Releases page.

Highlights:

• v1.1.0 — New Block YouTube Ads toggle (Settings → Protection) that blocks YouTube's ad network instantly, no restart. Releases are now signed with a stable keystore.
• v1.0.1 — Green launcher icon, "Sponsor us" row removed, refreshed UI colors/wording, and instant whitelist / blacklist / app-whitelist (no more restarts or filter updates to apply a change).
• v1.0.0 — Initial release.

Features

• System-wide ad blocking via a local full-tunnel VPN — no root required
• Real TCP/IP stack (gVisor) inside the tunnel: DNS answers on :53, every other packet is forwarded to your real network, so internet keeps working while ads are filtered
• Blocks ads, trackers, phishing and malware domains via powerful filter lists
• HTTPS / cosmetic filtering (optional): hides ad banners visually in selected browsers using a locally-generated root CA — never intercepts banking/Google traffic
• Firewall per-app allow/deny rules
• WireGuard tunnel profiles (import .conf)
• Root proxy mode (iptables redirect) for rooted devices
• Trusted networks: auto-pause on your home/office Wi-Fi
• Protection profiles with schedules and per-profile DNS providers
• Live query log with search, blocked/all filter and per-domain details
• Statistics: total queries, blocked count, block rate and charts
• Home-screen widget and Quick Settings tile toggle
• Tasker / automation intents, start-on-boot, auto filter updates
• Dark / light / system theme (Material 3) and custom accent colors

How it works

Hikari AdBlock builds a VpnService tunnel and runs a full TCP/IP network stack (gVisor, shipped as a prebuilt gomobile AAR) inside it. The stack answers DNS queries itself on :53:

• query for a blocked domain → an NXDOMAIN/block response is synthesized, so the ad/tracker never resolves;
• everything else (DNS and all regular TCP/UDP traffic, including YouTube and other apps) is forwarded through the real network, so the internet keeps working normally.

Filter lists are fetched from the blockads-default-filter repository, compiled locally, and periodically auto-updated.

Building

Requirements

• Android Studio (Ladybug or newer) — or just JDK 17 + Android SDK 36
• min SDK 24 (Android 7.0), target/compile SDK 36
• The prebuilt tunnel AAR at app/libs/tunnel.aar (already committed)

Steps

git clone https://github.com/codegeasse1/hikari-adblock.git
cd hikari-adblock
./gradlew :app:assembleDebug          # debug APK
./gradlew :app:assembleRelease        # release APK (debug-signed unless CI key is provided)

Install the debug APK on a device with adb install app/build/outputs/apk/debug/app-debug.apk.

Rebuilding the tunnel AAR (advanced)

The Go tunnel is at github.com/nqmgaming/blockads-tunnel (GPL). To rebuild app/libs/tunnel.aar:

cd <tunnel-source>
GOFLAGS=-buildvcs=false gomobile bind -target=android -androidapi 24 -trimpath \
  -ldflags="-s -w -buildid= -extldflags=-Wl,-z,max-page-size=16384" \
  -o <this-repo>/app/libs/tunnel.aar github.com/nqmgaming/blockads-tunnel

CI

.github/workflows/build.yml:

• builds debug + release APKs and runs unit tests on every push to main;
• a manual workflow_dispatch run with the release checkbox creates a GitHub Release with an APK signed by a CI-generated keystore.

License

GPL-3.0 — see LICENSE.

Credits

• This app is a fork of BlockAds (GPL-3.0)
• Go tunnel stack: blockads-tunnel (GPL-3.0)
• Filter lists: blockads-default-filter