diff --git a/README.md b/README.md
index df11f8f0..cc696fc4 100644
--- a/README.md
+++ b/README.md
@@ -129,6 +129,17 @@ This is opt-in and fully backward compatible — existing calls to `triggerTrans
 
 **Using incognito for a different (e.g. linked/family) account:** `incognito: true` on its own does not switch which smallcase account the SDK is acting as — it only changes how that call's browser session behaves. To connect or transact on behalf of a different smallcase account than the one currently authenticated, call `SmallcaseGateway.init(sdkToken)` again with that account's own token before calling `triggerTransaction` — the same way you would for any account switch, incognito or not.
 
+## Native SDK debug mode
+
+The native Gateway and Loans SDK versions this package depends on are pinned in `native-sdk.json`, once for `release` (default) and once for `debug`. Debug builds of the native SDKs enable WebView inspection and debug logging, and are published to smallcase's internal registries only.
+
+To consume the debug builds:
+
+- Android: add `SmallcaseGateway_sdkMode=debug` to the host app's `android/gradle.properties`, then sync. Artifactory access to `SCGateway-internal` is required.
+- iOS: add `source 'git@github.com:smallcase/cocoapodspec-internal.git'` and `source 'https://cdn.cocoapods.org/'` to the host app's `Podfile`, then run `SMALLCASE_SDK_MODE=debug pod install`. Run a plain `pod install` to switch back.
+
+The build fails with an explicit error if debug mode is selected but `native-sdk.json` has no debug pin for an SDK.
+
 ## Debug / Contribution
 
 Make sure you have react native dev environment set up
diff --git a/android/build.gradle b/android/build.gradle
index 553b3db9..4e34b7ee 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -146,13 +146,25 @@ repositories {
 
 def kotlin_version = getExtOrDefault('kotlinVersion')
 
+// Native SDK pins live in native-sdk.json. Set SmallcaseGateway_sdkMode=debug in the
+// host app's gradle.properties to consume debug builds of the native SDKs.
+def sdkMode = getExtOrDefault('sdkMode') ?: 'release'
+def nativeSdks = new groovy.json.JsonSlurper().parse(file("$projectDir/../native-sdk.json"))
+if (!nativeSdks.containsKey(sdkMode)) {
+  throw new GradleException("${project.name}: unknown SmallcaseGateway_sdkMode '${sdkMode}', expected one of ${nativeSdks.keySet()}")
+}
+def androidSdks = nativeSdks[sdkMode].android
+androidSdks.each { sdk, coordinate ->
+  if (!coordinate) {
+    throw new GradleException("${project.name}: no ${sdk} SDK pinned for mode '${sdkMode}' in native-sdk.json")
+  }
+}
+
 dependencies {
    //noinspection GradleDynamicVersion
     implementation 'com.facebook.react:react-native:+'  // From node_modules
-    // INTERNAL TEST PIN: feat/incognito-mode branch build.
-    // Revert to: implementation 'com.smallcase.gateway:sdk:6.1.1'
-    implementation 'com.smallcase.gateway:sdk-feat-incognito-mode-c1b21c9:6.1.2-3193-release'
-    implementation 'com.smallcase.loans:sdk-sourav-native-dark-theme-cb54bf9:5.1.4-92-release'
+    implementation androidSdks.gateway
+    implementation androidSdks.loans
     implementation "androidx.core:core-ktx:1.3.1"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
diff --git a/native-sdk.json b/native-sdk.json
new file mode 100644
index 00000000..3a509ebb
--- /dev/null
+++ b/native-sdk.json
@@ -0,0 +1,28 @@
+{
+  "release": {
+    "android": {
+      "gateway": "com.smallcase.gateway:sdk-feat-incognito-mode-c1b21c9:6.1.2-3193-release",
+      "loans": "com.smallcase.loans:sdk-sourav-native-dark-theme-cb54bf9:5.1.4-92-release"
+    },
+    "ios": {
+      "gateway": {
+        "name": "SCGateway-feat-incognito-mode-2d15c7b",
+        "version": "7.2.0-28-release"
+      },
+      "loans": {
+        "name": "SCLoans-sourav-native-dark-theme-37c97d9",
+        "version": "7.1.2-45-release"
+      }
+    }
+  },
+  "debug": {
+    "android": {
+      "gateway": null,
+      "loans": null
+    },
+    "ios": {
+      "gateway": null,
+      "loans": null
+    }
+  }
+}
diff --git a/package.json b/package.json
index 26045bb4..b694305e 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
     "cpp",
     "types",
     "react-native-smallcase-gateway.podspec",
+    "native-sdk.json",
     "!lib/typescript/example",
     "!lib/typescript/smart_investing_react_native",
     "!android/build",
diff --git a/react-native-smallcase-gateway.podspec b/react-native-smallcase-gateway.podspec
index 2e0a2543..1a61ec5c 100644
--- a/react-native-smallcase-gateway.podspec
+++ b/react-native-smallcase-gateway.podspec
@@ -1,6 +1,18 @@
 require "json"
 
 package = JSON.parse(File.read(File.join(__dir__, "package.json")))
+
+# Native SDK pins live in native-sdk.json. Run `SMALLCASE_SDK_MODE=debug pod install`
+# in the host app to consume debug builds of the native SDKs.
+native_sdks = JSON.parse(File.read(File.join(__dir__, "native-sdk.json")))
+sdk_mode = ENV.fetch("SMALLCASE_SDK_MODE", "release")
+unless native_sdks.key?(sdk_mode)
+  raise "react-native-smallcase-gateway: unknown SMALLCASE_SDK_MODE '#{sdk_mode}', expected one of #{native_sdks.keys}"
+end
+ios_sdks = native_sdks[sdk_mode]["ios"]
+ios_sdks.each do |sdk, pod|
+  raise "react-native-smallcase-gateway: no #{sdk} SDK pinned for mode '#{sdk_mode}' in native-sdk.json" if pod.nil?
+end
 folly_compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1 -Wno-comma -Wno-shorten-64-to-32'
 
 Pod::Spec.new do |s|
@@ -34,10 +46,6 @@ Pod::Spec.new do |s|
     s.dependency "ReactCommon/turbomodule/core"
   end
 
-  # INTERNAL TEST PIN: feat/incognito-mode branch build.
-  # Revert to: s.dependency 'SCGateway', '7.2.0'
-  s.dependency 'SCGateway-feat-incognito-mode-2d15c7b', '7.2.0-28-release'
-  # INTERNAL TEST PIN: dark-theme branch build (mirrors the android/build.gradle pin).
-  # Revert to: s.dependency 'SCLoans', '7.2.0'
-  s.dependency 'SCLoans-sourav-native-dark-theme-37c97d9', '7.1.2-45-release'
+  s.dependency ios_sdks["gateway"]["name"], ios_sdks["gateway"]["version"]
+  s.dependency ios_sdks["loans"]["name"], ios_sdks["loans"]["version"]
 end