# Rain Sounds

状态：active
Platform：android
Package：com.aluntapps.rainsounds
Version：6.1
Opportunity：2026-06-10-rain-thunderstorm-sleep-sounds

## 摘要

- 包类型：xapk，inner APK 数：4
- 引擎 / 框架：native
- SDK 线索：admob, facebook, firebase, revenuecat
- Endpoint candidates：5
- 结论口径：本报告只基于静态 ZIP / Manifest / 字符串证据；不代表真实运行路径已验证。

## 直接证据

- [high] Manifest package id is com.aluntapps.rainsounds（source: `AndroidManifest.xml`，status: `verified`）
- [high] Manifest declares 14 permissions（source: `AndroidManifest.xml`，status: `verified`）
- [high] Engine/framework markers: native（source: `APK file inventory`，status: `verified`）
- [high] Static strings include 5 endpoint candidates（source: `Text/string scan`，status: `verified`）
- [high] Package contains 4 native libraries（source: `APK file inventory`，status: `verified`）

## 推断

- [medium] SDK markers suggest: admob, facebook, firebase, revenuecat（source: `Manifest, filenames, and text strings`，status: `inferred`）

## 权限和组件

### 权限

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.aluntapps.rainsounds.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

### 组件

- Activities：com.aluntapps.rainsounds.activity.AdPolicyActivity, com.aluntapps.rainsounds.activity.AdjustMixActivity, com.aluntapps.rainsounds.activity.CustomSelectActivity, com.aluntapps.rainsounds.activity.DeleteCustomMixActivity, com.aluntapps.rainsounds.activity.MainActivity, com.aluntapps.rainsounds.activity.MixCustomActivity, com.aluntapps.rainsounds.activity.NewReleaseActivity, com.aluntapps.rainsounds.activity.OtherAppsActivity, com.aluntapps.rainsounds.activity.PlayActivity, com.aluntapps.rainsounds.activity.PurchaseActivity, com.aluntapps.rainsounds.activity.SaveCustomActivity, com.aluntapps.rainsounds.activity.SetCustomTimeActivity, com.aluntapps.rainsounds.activity.SetTimeActivity, com.aluntapps.rainsounds.activity.SettingsActivity, com.aluntapps.rainsounds.activity.SplashActivity, com.android.billingclient.api.ProxyBillingActivity, com.android.billingclient.api.ProxyBillingActivityV2, com.applovin.adview.AppLovinFullscreenActivity, com.applovin.adview.AppLovinFullscreenImmersiveActivity, com.applovin.creative.MaxCreativeDebuggerActivity, com.applovin.creative.MaxCreativeDebuggerDisplayedAdActivity, com.applovin.mediation.MaxDebuggerActivity, com.applovin.mediation.MaxDebuggerAdUnitDetailActivity, com.applovin.mediation.MaxDebuggerAdUnitWaterfallsListActivity, com.applovin.mediation.MaxDebuggerAdUnitsListActivity, com.applovin.mediation.MaxDebuggerAxonEventsListActivity, com.applovin.mediation.MaxDebuggerCmpNetworksListActivity, com.applovin.mediation.MaxDebuggerDetailActivity, com.applovin.mediation.MaxDebuggerMultiAdActivity, com.applovin.mediation.MaxDebuggerTcfConsentStatusesListActivity, com.applovin.mediation.MaxDebuggerTcfInfoListActivity, com.applovin.mediation.MaxDebuggerTcfStringActivity, com.applovin.mediation.MaxDebuggerTestLiveNetworkActivity, com.applovin.mediation.MaxDebuggerTestModeNetworkActivity, com.applovin.mediation.MaxDebuggerUnifiedFlowActivity, com.applovin.mediation.MaxDebuggerWaterfallSegmentsActivity, com.applovin.sdk.AppLovinWebViewActivity, com.google.android.gms.common.api.GoogleApiActivity, com.google.android.play.core.common.PlayCoreDialogWrapperActivity, com.inmobi.ads.rendering.InMobiAdActivity, com.pairip.licensecheck.LicenseActivity, com.vungle.ads.internal.ui.VungleActivity
- Services：com.aluntapps.rainsounds.services.SoundPlayerService, com.applovin.impl.adview.activity.AppRestartDuringAdDetectionService, com.applovin.impl.adview.activity.FullscreenAdService, com.google.android.datatransport.runtime.backends.TransportBackendDiscovery, com.google.android.datatransport.runtime.scheduling.jobscheduling.JobInfoSchedulerService, com.google.android.gms.measurement.AppMeasurementJobService, com.google.android.gms.measurement.AppMeasurementService, com.google.firebase.components.ComponentDiscoveryService
- Receivers：androidx.profileinstaller.ProfileInstallReceiver, com.google.android.datatransport.runtime.scheduling.jobscheduling.AlarmManagerSchedulerBroadcastReceiver, com.google.android.gms.measurement.AppMeasurementReceiver
- Providers：androidx.startup.InitializationProvider, com.applovin.sdk.AppLovinInitProvider, com.google.firebase.provider.FirebaseInitProvider, com.pairip.licensecheck.LicenseContentProvider, com.squareup.picasso.PicassoProvider

## SDK / Endpoint

### SDK

- `admob`
- `facebook`
- `firebase`
- `revenuecat`

### Endpoint candidates

- http://www.apache.org/licenses/
- https://google.com/search?%00%16https%3A%2F%2Fwww.google.com%00%01i%00%02i0%00=
- https://github.com/MEiDIK/SlimAdapter
- http://tizen.org/system/model_name
- http://tizen.org/feature/platform.version

## Warnings

- apktool manifest decode skipped 3 split APK(s)
- binary AndroidManifest.xml decoded with apktool

## 下一步

- 真机/模拟器验证 onboarding、paywall、首个可感知价值和崩溃路径。
- 把 endpoint candidates 与 HAR / MITM / Frida 动态证据对齐，避免只凭静态字符串下结论。
- 多版本对比权限、SDK、endpoint、native libs 和资源路径变化。
- 订阅/广告 SDK 线索存在，后续需拆 paywall、free trial、退款和广告频率。