StackLens: App Inspector

Veltack AI

About this app

StackLens shows you what's inside the apps on your phone. See what each app was likely built with, which permissions it requests, and which of those are granted. Every result comes with the evidence behind it, and everything stays on your device.

StackLens doesn't request Android's internet permission, so it can't send your app list or results anywhere over the network. It has no ads, no accounts, no analytics, and no tracking.

See how apps are built
StackLens looks for known signs of these technologies and tells you what it found:
• Flutter, React Native, and Unity
• Xamarin and .NET MAUI
• Cordova and Capacitor
• Native Android and Jetpack Compose
If nothing matches, StackLens says the framework is unknown instead of guessing.

Evidence, not guesses
• Every framework and language result has a high, medium, or low confidence level
• Open a result to see the files or components it's based on
• See language indicators for Kotlin, Dart, JavaScript, .NET, and native code
• Browse each app's native libraries and supported CPU architectures

Understand app permissions
• See every permission an app requests, grouped by type
• Check whether each one is granted, not granted, or can't be determined
• Read a plain-language explanation of common permissions
• Find out how many of your apps request the camera, microphone, or location

Technical details in one place
• Version, target SDK, and minimum SDK
• Install and update dates
• Debuggable, backup, and cleartext traffic settings
• SHA-256 signing certificate fingerprints
• Activities, services, broadcast receivers, and content providers, including which are exported
• Base and split APK file names

Find apps quickly
• Search by app name or package name
• Filter by user or system apps
• Sort by name or by most recently updated
• See framework counts across your apps on the dashboard

Your privacy, by design
StackLens uses Android's all-apps access so you can inspect any app on your device. It processes this information only on your device, keeps scan results in memory while it's running, and doesn't save them. Android backup is turned off for the app.

Good to know
StackLens identifies technologies from file names and component names, so its results are indicators and can sometimes be wrong. Requesting a permission doesn't mean an app is misusing it. StackLens is not an antivirus or malware scanner, and it doesn't rate whether an app is safe.

Requires Android 7.0 or newer.

What’s new

New Features