Aegis Sentinel Lite is a local device-security helper. It scans the apps already on your device and flags risky permission combinations so you can see what is actually capable of what, in plain language.

Aegis Lite is free to install. The security tools remain available without a purchase. A one-time $4.99 in-app purchase unlocks the local notes, media, and file vault after the three-day vault trial - there are no subscriptions, ads, analytics, accounts, or cloud upload.

What it does:
- Clear first-run disclosure before the installed-app permission audit runs.
- Full installed-app inventory with search and filter chips for apps that need review, all apps, user apps, changed apps, high risk, sideloaded, system, sensitive permissions, installers, and broad app visibility.
- Local change tracking to show apps or granted permissions that changed since the previous permission audit.
- Permission audit for risky combinations such as overlay plus accessibility, SMS plus contacts plus internet, package-install capability, and broad app visibility.
- One-tap jump to Android's own App Info screen for a flagged app.
- Basic device health check for root indicators, debuggable builds, app signature mismatch, and open Wi-Fi.
- Local scan history with trend labels and per-scan details.
- Optional background protection, off by default, using Android WorkManager.
- Local encrypted vault for short notes, sealed with Android Keystore.
- Local encrypted media and file vault for photos, documents, and selected folders chosen through Android's system picker.
- Plain-text report export through Android's share sheet.
- Privacy controls to delete scan history, exported reports, background-check state, vault notes, and media/file vault data.

What it does not do:
- No ads, analytics, account, or cloud upload. The only internet access is Google Play's own purchase processing for the one-time vault unlock.
- No anti-uninstall behavior, hidden persistence, or always-running service.
- It cannot remove, block, or modify other apps. Findings are informational; Android's own settings are where you change permissions or uninstall apps.

This is a diagnostic tool, not an antivirus replacement. It cannot catch everything, and a clean scan is not a guarantee. Its job is to make Android's existing app permission information easier to understand and act on.