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  • NetCage
    A per-app firewall for Android. Choose a listed app that can use the internet and refuse its connections on Wi-Fi and mobile while the rest of your phone stays online.
  • How it works
    How NetCage routes selected apps into a local VpnService tunnel, reads the header fields needed for a refusal, and keeps an empty allow-list from taking the whole phone offline.
  • Install and setup
    First launch, the VPN consent, the Finish setup card, Always-on VPN, battery, notifications, precise timing and optional Usage Access.
  • Caging apps
    The app list, search, filter chips, sort orders, bulk cage and release with undo, the detail view, per-app icons, hiding apps, and rules for apps that are no longer installed.
  • Profiles
    Group apps into a named set — work, travel, study — and cage the whole set in one action, either replacing your current selection or adding to it.
  • Cage Packs
    Publish, import, report, block and unblock shared NetCage profiles without exposing the publisher's account identity.
  • Schedules and day passes
    Recurring windows that cage a profile or a single app, day passes that let one app back online briefly, the global pause, and what happens at a boundary.
  • Widgets and the Quick Settings tile
    Control the cage without opening the app — a Quick Settings tile for the master switch, and a home-screen widget with per-app toggles for the apps you pin.
  • Support, backup and account
    Restore a NetCage setup, contact in-app support, understand what sign-in owns, and delete the cloud account.
  • Settings and your data
    Backing up and restoring your NetCage setup, reading the event log, appearance options, and the settings that do not sync.
  • Privacy
    What the local firewall reads, which optional features send data, which providers receive it, and how account deletion works.
  • Limitations
    What NetCage cannot do, and why — one VPN at a time, blocking by user ID, handoff to another app, cached content, DNS, transport rules, and the experimental root engine.
  • FAQ
    Answers about NetCage's local VPN, app eligibility, accounts, Cage Packs, battery, notifications and recovery.
  • Changelog
    What changed in each release of NetCage, latest first.
  • For agents
    A compact, machine-readable summary of NetCage for coding agents and LLMs — the canonical facts, the claims that are wrong, and where to find the raw Markdown.

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