It turns out some ad/analytics SDKs used by various proprietary Android apps can be disabled/kneecapped by adding meta-data entries to the apps AndroidManifest In order for an app to read its meta-data entries from its own AndroidManifest it actually has to go through the getPackageManager() call This means we can change the system package parser and simply add these variables to every app This would hopefully make usage of proprietary apps more private, granted they are still proprietary and can very well simply ignore these A simple app was created to verify the expected 05-21 05:24:44.557 4973 4973 D MDT : firebase_analytics_collection_enabled:false and it does indeed work! core/java/android/content/pm/PackageParser.java parseMetaData() line 5526 if (data == null) { src/com/android/settings/SecuritySettings.java res/xml/security_settings_misc.xml res/values/strings.xml Hamper analytics SDKs Aggressively breaks various proprietary tracking SDKs by unsetting their API keys. May cause low-quality proprietary apps to crash. Keywords to find keys "meta-data android:name" analytics "meta-data android:name" app id "meta-data android:name" disable "meta-data android:name" gdpr "meta-data android:name" location "meta-data android:name" opt-out "meta-data android:name" private key "meta-data android:name" secret key Core - Currently Implemented data.putString("android.webkit.WebView.MetricsOptOut", "true"); data.putString("batch_opted_out_by_default", "true"); data.putString("com.ad4screen.no_geoloc", "true"); data.putString("com.facebook.sdk.AutoLogAppEventsEnabled", "false"); data.putString("com.mixpanel.android.MPConfig.UseIpAddressForGeolocation", "false"); data.putString("com.webengage.sdk.android.location_tracking", "false"); data.putString("firebase_analytics_collection_deactivated", "true"); data.putString("firebase_analytics_collection_enabled", "false"); data.putString("firebase_crash_collection_enabled", "false"); data.putString("firebase_performance_collection_deactivated", "true"); data.putString("google_analytics_adid_collection_enabled", "false"); data.putString("google_analytics_ssaid_collection_enabled", "false"); data.putString("google_analytics_default_allow_ad_personalization_signals", "false"); data.putString("com.ad4screen.tracking_mode", "Restricted"); data.putString("com.sprooki.LOCATION_SERVICES", "disable"); Settings data.putString("com.bugsnag.android.AUTO_CAPTURE_SESSIONS", "false"); data.putString("com.bugsnag.android.ENABLE_EXCEPTION_HANDLER", "false"); data.putString("com.bugsnag.android.PERSIST_USER_BETWEEN_SESSIONS", "false"); data.putString("com.bugsnag.android.SEND_THREADS", "false"); data.putString("com.followanalytics.message.inapp.enable", "false"); data.putString("com.followanalytics.message.push.enable", "false"); data.putString("com.mixpanel.android.MPConfig.AutoShowMixpanelUpdates", "false"); data.putString("com.mixpanel.android.MPConfig.DisableAppOpenEvent", "true"); data.putString("com.mixpanel.android.MPConfig.DisableDecideChecker", "true"); data.putString("com.mixpanel.android.MPConfig.DisableFallback", "true"); data.putString("com.mixpanel.android.MPConfig.DisableGestureBindingUI", "true"); data.putString("com.mixpanel.android.MPConfig.DisableViewCrawler", "true"); data.putString("com.mixpanel.android.MPConfig.TestMode", "true"); data.putString("engagement:adm:register", "false"); data.putString("engagement:locationReport:lazyArea", "false"); data.putString("engagement:locationReport:realTime:background", "false"); data.putString("engagement:locationReport:realTime", "false"); data.putString("engagement:locationReport:realTime:fine", "false"); data.putString("engagement:log:test", "false"); data.putString("engagement:reportCrash", "false"); data.putString("FYBEnableSSLRewardedVideo", "true"); data.putString("mceSessionEnabled", "false"); data.putString("tapjoy.disable_video_offers", "true"); data.putString("CLEVERTAP_USE_GOOGLE_AD_ID", "0") data.putString("engagement:connection:delay", "2629800"); API Keys String apiFillerValue = ""; //String apiFillerValue = "DO_NOT_TRACK"; data.putString("apptentive_api_key", apiFillerValue); data.putString("apptentive_key", apiFillerValue); data.putString("apptentive_signature", apiFillerValue); data.putString("__ChartboostAir__AppID", apiFillerValue); data.putString("__ChartboostAir__AppSignature", apiFillerValue); data.putString("com.a0soft.gphone.aTrackDog.webURL", apiFillerValue); data.putString("com.ad4screen.facebook_appid", apiFillerValue); data.putString("com.ad4screen.partnerid", apiFillerValue); data.putString("com.ad4screen.privatekey", apiFillerValue); data.putString("com.ad4screen.senderid", apiFillerValue); data.putString("com.appsee.ApiKey", apiFillerValue); data.putString("com.blueshift.gcm_sender_id", apiFillerValue); data.putString("com.bugsnag.android.API_KEY", apiFillerValue); data.putString("com.crashlytics.ApiKey", apiFillerValue); data.putString("com.facebook.sdk.ApplicationId", apiFillerValue); data.putString("com.geouniq.appkey", apiFillerValue); data.putString("com.google.android.awareness.API_KEY", apiFillerValue); data.putString("com.indooratlas.android.sdk.API_KEY", apiFillerValue); data.putString("com.indooratlas.android.sdk.API_SECRET", apiFillerValue); data.putString("com.pushwoosh.appid", apiFillerValue); data.putString("com.pushwoosh.senderid", apiFillerValue); data.putString("com.upsight.app_token", apiFillerValue); data.putString("com.upsight.public_key", apiFillerValue); data.putString("co.paystack.android.PublicKey", apiFillerValue); data.putString("FAID", apiFillerValue); data.putString("io.branch.sdk.BranchKey", apiFillerValue); data.putString("io.emma.SESSION_KEY", apiFillerValue); data.putString("io.fabric.ApiKey", apiFillerValue); data.putString("net.hockeyapp.android.appIdentifier", apiFillerValue); data.putString("net.hockeyapp.android.appSecret", apiFillerValue); data.putString("pilgrim_sdk_key", apiFillerValue); data.putString("pilgrim_sdk_secret", apiFillerValue); data.putString("presage_key", apiFillerValue); data.putString("tkbl-api-key-0", apiFillerValue);