Substack

Substack · Videos, writing, podcasts & more

Native (iOS + Android) News & Magazines Substack Inc.

Bundle ID com.substack.app

Version analyzed 2.102.0

Build framework Native (iOS + Android)

Detection confidence Medium

SDKs detected 13

Analyzed 2026-06-13

Static + runtime analysis

SDKs detected

13 SDKs found across 9 categories. Click any SDK to see every other app that uses it.

All SDKs

Analytics 2 SDKs

Firebase Analytics Google

Facebook SDK Meta

Animation 1 SDK

Lottie Airbnb

Anti-Abuse 1 SDK

Google Play Integrity Google

Authentication 2 SDKs

Google Sign-In Google

Google Identity Credentials Google

Imaging 1 SDK

Coil Coil

Machine Learning 3 SDKs

ML Kit Barcode Scanning Google

ML Kit Text Recognition Google

ML Kit Face Detection Google

Monitoring 1 SDK

Sentry Sentry

Push Notifications 1 SDK

Firebase Cloud Messaging Google

Session Replay 1 SDK

Sentry Session Replay Sentry

From manifest + Info.plist

Permissions requested 7 sensitive

19 permissions requested at runtime. Colors reflect platform sensitivity tier.

Approximate location sensitive

Access approximate location (network-based).

Write storage sensitive

Write files to shared external storage. No-op for apps targeting Android 11+.

Read contacts sensitive

Read the user's contacts data.

Post notifications sensitive

Post notifications to the system.

Microphone sensitive

Record audio from the microphone.

Camera sensitive

Take pictures and record video.

Read storage sensitive

Read files from shared external storage. Replaced by READ_MEDIA_* on Android 13+.

Internet access standard

Open network sockets.

Foreground service standard

Run a foreground service.

Foreground service: media playback standard

Required for foreground services of type mediaPlayback.

Foreground service: data sync standard

Required for foreground services of type dataSync.

Network state standard

Read connectivity information.

Wake lock standard

Keep the device awake.

Run at startup standard

Receive the BOOT_COMPLETED broadcast.

Biometric authentication standard

Authenticate using biometric hardware.

Fingerprint authentication standard

Authenticate using fingerprint hardware.

Foreground service: screen capture standard

Required for foreground services of type mediaProjection.

Bluetooth (legacy) standard

Connect to paired Bluetooth devices on Android 11 and below.

Modify audio settings standard

Modify global audio settings.

Frequently asked questions

What FlyTrap detected inside Substack.

What is Substack built with?

Substack by Substack Inc. is built with Native (iOS + Android). FlyTrap determined this by analyzing the app's compiled binary, not from anything the developer published.

What SDKs does Substack use?

FlyTrap detected 13 third-party SDKs inside Substack, including Firebase Analytics, Firebase Cloud Messaging and Google Identity Credentials. They span areas such as Analytics, Push Notifications, Authentication and Anti-Abuse. The full list, grouped by category, is on this page.

What permissions does Substack request?

Substack requests 19 permissions. 7 of these are sensitive, such as Approximate location, Write storage and Read contacts. Each is listed above with its platform sensitivity tier.

Is Substack safe to use?

FlyTrap reports what an app contains, it does not issue a safety verdict. Substack requests 19 permissions (7 sensitive) and bundles 13 third-party SDKs. Reviewing those alongside the developer helps you decide what you are comfortable granting.

What platforms is Substack available on?

The version FlyTrap analyzed targets Android.

Same genre

Substack

SDKs detected

Permissions requested 7 sensitive

Frequently asked questions

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