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Tech StackTDN

X Tech Stack

Languages, frameworks, and third-party SDKs detected inside X — extracted from the iOS App Store build.

OverviewHistoryRankingsInsightsTDNTech Stack
v11.96 · latestMetal shadersNo declared tracking

Stack profile

C/C++ · Metal (shaders) · Objective-C · 67 third-party SDKs across 11 categories · notable detections include Firebase, Google, Braze

Analysis

Analyzed
June 1, 2026
Bundle ID
com.atebits.Tweetie2
Detection floor
Lower bound

Languages

4

C/C++ · Metal (shaders) · Objective-C

Third-party SDKs

67

11 categories

Apple frameworks

19

137 total frameworks

Signals

57

capabilities, APIs, fonts

Build

Build & platform

Compiler, target OS, supported device families, and localization footprint detected from the bundle.

Min iOS

15.0

Built with

Xcode 26.4

iphoneos26.4

Devices

iPhone · iPad

Localizations

43

11 strings in base locale

Method

How this is detected

  • Detected SDKs are a lower bound — X may bundle more than static analysis can attribute.
  • The App Store binary is encrypted with Apple FairPlay, so detection is limited to what is observable without decryption.

Runtime

Languages & runtimes

Primary runtimes and language signatures observed in the app binary.
C/C++18MMetal (shaders)13Objective-C18Swift18

Dependencies

Third-party SDKs

Grouped by purpose. Select any SDK to see other tracked apps that use it.
67 of 67 SDKs shown

Analytics

4
BBrazeKit14.1.03FirebaseAnalytics11.14.04GoogleAppMeasurement11.14.05GoogleAppMeasurementIdentitySupport11.14.04

Ads

2
Google Mobile Ads (AdMob)2GoogleMobileAds11.13.02

Crash & Performance

1
FirebaseCrashlytics11.14.04

Payments

1
LLinkKit6.4.72

Authentication

4
AAppAuth1.7.66GoogleSignIn8.0.07GTMAppAuth4.1.16GTMSessionFetcher3.5.06

Firebase

11
AAppCheck11.2.02FBLPromises2.4.07Firebase11.14.04FirebaseCore11.14.07FirebaseCoreInternal11.14.07FirebaseInstallations11.14.07FirebaseRemoteConfig11.14.03GoogleDataTransport10.1.05GoogleUtilities8.1.08Nnanopb3.30910.07PPromises2.4.06

Rendering

1
MMarkdownView

Voice

2
LLiveKit3WWebRTC1.02

Telephony

1
PPhoneNumberKit5

Apple Standard Libraries

1
SwiftProtobuf4

Other

39
--3FBD916C0EFD0C81.0--5B594600D65C7EA31.0CC2PAC1.0CCastleSDK4.1.0CCodeScannerDDeviceRisk4.8.1FFaceLivenessCoreGGrokLLHLSLib1.0LLocalization2MMobileIntelligence1.1.21OOCFTestKitPPalmAPISaas1.0.0PPaymentsPPeriscopeLegacyStringsPPeriscopeSDKPPinwheelSDK1.0PPrelude1.0PPreludeCore1.0PPrivacy5PProfileSSocureDocV5.4.1SStampsSwiftUIIntrospect1.0TT1Twitter1.0TTFNUITTFSFeatureSwitchesUI1.0TTFSLocalizedUtilitiesTTFXParametersUITTGIFiltersTThreads2TTSATwitterAppleSystemAuthorizationServiceManagerKitUUserMessagingPlatform2.7.02VVeryAILiveness1.0.50XXCoreLibraries1.0XXDSFoundationXXFaceLiveness1.0XXKotlin1.0XXPalmLiveness

Apple

Apple frameworks

Native frameworks and system libraries linked into the build.
AActivityKit (Live Activities)15AApp Intents12AAVFoundation (audio/video)18AAVKit15BBackground Tasks11CCloudKit5CCore Location16CCore ML8MMapKit13MMetalKit15PPassKit (Wallet / Apple Pay)8PPencilKit4SSceneKit7SStoreKit (in-app purchase)18SwiftUI18UUIKit18UUser Notifications18VVision12WWidgetKit (widgets)16

Extensions

App extensions

4 bundled app extensions for widgets, notifications, share sheets, and Siri intents.
TwitterNotificationContentExtensionNotification Content
TwitterNotificationServiceExtensionNotification Service
ShareExtensionShare
WidgetExtension ProductionWidget

Interface

UI & graphics

Frameworks and libraries X uses to render its interface and animations.
SwiftUIUIKit

GPU

Metal shaders

5 custom GPU shader functions across 3 metallib files.
PTVSketchEngine_fragmentShaderPTVSketchEngine_vertexShaderagentAvatarShadersamplingShaderTweetBackgroundvertexShaderTweetBackground

Models

On-device ML models

Core ML and ML model bundles shipped inside the app for local inference.
face_detection_short_rangeBlurDetectionGlareIntensityCheckCornerDetectionGlareClassify

Assets

Bundled fonts

Custom font families packaged in the app bundle.
Chirp-BoldChirp-HeavyChirp-LightChirp-MediumChirp-RegularChirp-UI-VFChirp-UI-VF-With-Overriden-EmojiChirp-UI-VF-With-Overriden-Emoji-202601ChirpCY-BoldChirpCY-HeavyChirpCY-LightChirpCY-MediumChirpCY-RegularInter-BoldInter-RegularInter-SemiBoldProtoMono-RegularRoboto-Bold

Packaging

Build & packaging

Dependency managers and build tooling detected in the app bundle.
Swift Package Manager (SwiftPM)

Integrations

Services & integrations

Service configuration, URL schemes, universal links, and integration keys observed in the sanitized audit.

SDK config keys

GADApplicationIdentifier

Google Mobile Ads (AdMob) · Info.plist

Registered URL schemes

com.atebits.Tweetie2com.atebits.Tweetie2+2.0.0com.atebits.Tweetie2+2.1.0com.atebits.Tweetie2+2.1.1com.atebits.Tweetie2+3.0.0com.googleusercontent.apps.638150425128-l5vqrme56bqgum2unv5151c5569dlludcom.twitter.twitter-iphonecom.twitter.twitter-iphone+1.0.0fb2231777543tweetietwittertwitterauth

Queries other apps

barcelonachatgptcoinbasecom.amazon.mobile.shoppingcom.starlink.mobilecomgooglemapsdiscordduolingoetradefbfb-messengerFidelitygithubgooglegooglecalendargooglechromegooglegmailhuluibkrinstagraminstagram-storieslinelinkedinms-outlooknflxphantompinterestreddit

ATS exception domains

api.twitter.comcards.twitter.comconcon.twitter.comconnectivitycheck.gstatic.comupload.twitter.com
Allows arbitrary network loads

Network

Backend & API

Backend hosts, GraphQL operations, and certificate pinning signals surfaced by static analysis.

Backend hosts

api.twitter.comcards.twitter.comconcon.twitter.comconnectivitycheck.gstatic.comupload.twitter.com

First party

App modules

Likely first-party modules and resource bundles detected in X.
AmazonFaceLivenessAppAuthCoreCodeScannerDMV2DMV2_DMV2FirebaseCoreExtensionGrokLocalizationOnboardingComponentFrameworkPaymentsPeriscopePhoneNumberKitSPMProfileStampsTFNUISPMTFSLocalizedTFSLocalizedUtilitiesTFXParametersThreadsTSATwitterAppleSystemAuthorizationServiceManagerKitTwitterAppearanceTwitterAppSPMMigrationTwitterCommunitiesUITwitterComposerTwitterComposer_TwitterComposerTwitterDiagnosticToolsTwitterGraphicsFiltersTwitterLifecycleTools

Entitlements

Capabilities

System capabilities and entitlement flags included with the app.
App AttestApp GroupsAssociated Domains (Universal Links)Background App RefreshBackground AudioBackground PushCommunication NotificationsKeychain SharingPush Notifications (APNs)Sign in with AppleSiriKitTime-Sensitive NotificationsVoIPWallet passes

APIs

Detected API usage

System frameworks and privacy-sensitive APIs referenced by the binary.
Location

Privacy

Privacy manifest

Does not declare cross-app tracking in its App Store privacy manifest.

Collected data types

AdvertisingDataCoarseLocationCrashDataDeviceIDEmailAddressNameOtherDataTypesOtherDiagnosticDataOtherUsageDataPerformanceDataPhoneNumberProductInteractionUserID

Required-reason API categories

DiskSpaceFileTimestampSystemBootTimeUserDefaults

Architecture

Architecture details

Additional build and bundle signals that help explain how the app is structured.

Storyboards

5

Launch: LaunchScreen

Nibs

55

Explore technologies across all apps

Browse every SDK, framework, and language we detect, then compare the apps that share the same stack.

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