diff --git a/packages/react-native-cli/src/lib/Gradle.ts b/packages/react-native-cli/src/lib/Gradle.ts
index ea68a170ac..daddbe8b16 100644
--- a/packages/react-native-cli/src/lib/Gradle.ts
+++ b/packages/react-native-cli/src/lib/Gradle.ts
@@ -1,6 +1,8 @@
 import { Logger } from '../Logger'
 import { promises as fs } from 'fs'
 import path from 'path'
+import { detectInstalledVersion } from './Npm'
+import semver from 'semver'
 
 const GRADLE_PLUGIN_IMPORT = (version: string) => `classpath("com.bugsnag:bugsnag-android-gradle-plugin:${version}")`
 const GRADLE_PLUGIN_IMPORT_REGEX = /classpath\(["']com\.bugsnag:bugsnag-android-gradle-plugin:.*["']\)/
@@ -12,6 +14,9 @@ const BUGSNAG_CONFIGURATION_BLOCK = 'bugsnag {\n}\n'
 const BUGSNAG_CONFIGURATION_BLOCK_REGEX = /^\s*bugsnag {[^}]*?}/m
 const UPLOAD_ENDPOINT_REGEX = /^\s*bugsnag {[^}]*endpoint[^}]*?}/m
 const BUILD_ENDPOINT_REGEX = /^\s*bugsnag {[^}]*releasesEndpoint[^}]*?}/m
+const GRADLE_VERSION_FAIL_MSG = `Cannot determine an appropriate version of the Bugsnag Android Gradle plugin for use in this project.
+
+Please see ${DOCS_LINK} for information on Gradle and the Android Gradle Plugin (AGP) compatibility`
 
 export async function getSuggestedBugsnagGradleVersion (projectRoot: string, logger: Logger): Promise<string> {
   let fileContents: string
@@ -30,14 +35,24 @@ export async function getSuggestedBugsnagGradleVersion (projectRoot: string, log
   } else if (major === 7) {
     return '7.+'
   } else {
-    const versionMatchResult = fileContents.match(/classpath\(["']com.android.tools.build:gradle["']\)/)
-    if (versionMatchResult) {
+    // if the AGP version isn't set explicitly in the build.gradle file,
+    // try to suggest a version based on the detected react-native version
+    const noVersionMatchResult = fileContents.match(/classpath\(["']com.android.tools.build:gradle["']\)/)
+    let reactNativeVersion
+    try {
+      reactNativeVersion = await detectInstalledVersion('react-native', projectRoot)
+    } catch (e) {}
+
+    if (!noVersionMatchResult || !reactNativeVersion) {
+      logger.warn(GRADLE_VERSION_FAIL_MSG)
+      return ''
+    }
+
+    // RN 0.73+ requires AGP 8.+
+    if (semver.lt(reactNativeVersion, '0.73.0')) {
       return '7.+'
     } else {
-      logger.warn(`Cannot determine an appropriate version of the Bugsnag Android Gradle plugin for use in this project.
-
-Please see ${DOCS_LINK} for information on Gradle and the Android Gradle Plugin (AGP) compatibility`)
-      return ''
+      return '8.+'
     }
   }
 }
diff --git a/packages/react-native-cli/src/lib/Insert.ts b/packages/react-native-cli/src/lib/Insert.ts
index 7e95c392ce..31b01d3f55 100644
--- a/packages/react-native-cli/src/lib/Insert.ts
+++ b/packages/react-native-cli/src/lib/Insert.ts
@@ -18,6 +18,10 @@ const BUGSNAG_JAVA_IMPORT = 'import com.bugsnag.android.Bugsnag;'
 const BUGSNAG_JAVA_INIT = 'Bugsnag.start(this);'
 const JAVA_APP_ON_CREATE_REGEX = /(public void onCreate\s*\(\)\s*\{[^]*super\.onCreate\(\);(\s*))\S/
 
+const BUGSNAG_KOTLIN_IMPORT = 'import com.bugsnag.android.Bugsnag'
+const BUGSNAG_KOTLIN_INIT = 'Bugsnag.start(this)'
+const KOTLIN_APP_ON_CREATE_REGEX = /(override fun onCreate\s*\(\)\s*\{[^]*super\.onCreate\(\)(\s*))\S/
+
 const DOCS_LINK = 'https://docs.bugsnag.com/platforms/react-native/react-native/#basic-configuration'
 const FAIL_MSG = (filename: string) =>
 `Failed to update "${filename}" automatically. The file may not exist or it may be in an unexpected format or location.
@@ -114,39 +118,39 @@ export async function insertAndroid (projectRoot: string, logger: Logger): Promi
       cwd: javaDir
     }))[0]
 
-    const relativeMainApplicationPathOther = (await asyncGlob('**/*/MainApplication', {
-      cwd: javaDir
-    }))[0]
-
-    const relativeMainApplicationPath = relativeMainApplicationPathJava || relativeMainApplicationPathKotlin || relativeMainApplicationPathOther
+    const relativeMainApplicationPath = relativeMainApplicationPathJava || relativeMainApplicationPathKotlin
 
     if (!relativeMainApplicationPath) {
-      return logger.warn(FAIL_MSG('MainApplication.java, MainApplication.kt or MainApplication'))
+      return logger.warn(FAIL_MSG('MainApplication'))
     }
     mainApplicationPath = path.join(javaDir, relativeMainApplicationPath)
   } catch (e) {
-    logger.warn(FAIL_MSG('MainApplication.java, MainApplication.kt or MainApplication'))
+    logger.warn(FAIL_MSG('MainApplication'))
     return
   }
 
   try {
-    const mainApplication = await fs.readFile(mainApplicationPath, 'utf8')
+    const isKotlin = path.extname(mainApplicationPath) === '.kt'
+    const bugsnagImport = isKotlin ? BUGSNAG_KOTLIN_IMPORT : BUGSNAG_JAVA_IMPORT
+    const bugsnagInit = isKotlin ? BUGSNAG_KOTLIN_INIT : BUGSNAG_JAVA_INIT
+    const onCreateRegex = isKotlin ? KOTLIN_APP_ON_CREATE_REGEX : JAVA_APP_ON_CREATE_REGEX
 
-    if (mainApplication.includes(BUGSNAG_JAVA_IMPORT) || mainApplication.includes(BUGSNAG_JAVA_INIT)) {
+    const mainApplication = await fs.readFile(mainApplicationPath, 'utf8')
+    if (mainApplication.includes(bugsnagImport) || mainApplication.includes(bugsnagInit)) {
       logger.warn('Bugsnag is already included, skipping')
       return
     }
 
-    const mainApplicationWithImport = mainApplication.replace('import', `${BUGSNAG_JAVA_IMPORT}\nimport`)
-    const onCreateRes = JAVA_APP_ON_CREATE_REGEX.exec(mainApplicationWithImport)
+    const mainApplicationWithImport = mainApplication.replace('import', `${bugsnagImport}\nimport`)
+    const onCreateRes = onCreateRegex.exec(mainApplicationWithImport)
     if (!onCreateRes) {
-      logger.warn(FAIL_MSG('MainApplication.java, MainApplication.kt or MainApplication'))
+      logger.warn(FAIL_MSG('MainApplication'))
       return
     }
 
-    await fs.writeFile(mainApplicationPath, mainApplicationWithImport.replace(onCreateRes[1], `${onCreateRes[1]}${BUGSNAG_JAVA_INIT}${onCreateRes[2]}`), 'utf8')
+    await fs.writeFile(mainApplicationPath, mainApplicationWithImport.replace(onCreateRes[1], `${onCreateRes[1]}${bugsnagInit}${onCreateRes[2]}`), 'utf8')
     logger.success('Done')
   } catch (e) {
-    logger.error(FAIL_MSG('MainApplication.java, MainApplication.kt or MainApplication'))
+    logger.error(FAIL_MSG('MainApplication'))
   }
 }
diff --git a/packages/react-native-cli/src/lib/__test__/Gradle.test.ts b/packages/react-native-cli/src/lib/__test__/Gradle.test.ts
index e6092f17b7..b024323340 100644
--- a/packages/react-native-cli/src/lib/__test__/Gradle.test.ts
+++ b/packages/react-native-cli/src/lib/__test__/Gradle.test.ts
@@ -512,3 +512,31 @@ test('getSuggestedBugsnagGradleVersion(): success with bracketed AGP version', a
   const version = await getSuggestedBugsnagGradleVersion('/random/path', logger)
   expect(version).toBe('7.+')
 })
+
+test('getSuggestedBugsnagGradleVersion(): success with unspecified AGP version', async () => {
+  const buildGradle = await loadFixture(path.join(__dirname, 'fixtures', 'root-build-before-without-agp-version.gradle'))
+
+  const readFileMock = fs.readFile as jest.MockedFunction<typeof fs.readFile>
+  readFileMock.mockResolvedValueOnce(buildGradle)
+  readFileMock.mockResolvedValueOnce('{"dependencies": { "react-native": "0.73.0"} }')
+
+  let version = await getSuggestedBugsnagGradleVersion('/random/path', logger)
+  expect(version).toBe('8.+')
+
+  readFileMock.mockResolvedValueOnce(buildGradle)
+  readFileMock.mockResolvedValueOnce('{"dependencies": { "react-native": "0.72.11"} }')
+
+  version = await getSuggestedBugsnagGradleVersion('/random/path', logger)
+  expect(version).toBe('7.+')
+})
+
+test('getSuggestedBugsnagGradleVersion(): null with unspecified AGP and react native versions', async () => {
+  const buildGradle = await loadFixture(path.join(__dirname, 'fixtures', 'root-build-before-without-agp-version.gradle'))
+
+  const readFileMock = fs.readFile as jest.MockedFunction<typeof fs.readFile>
+  readFileMock.mockResolvedValueOnce(buildGradle)
+  readFileMock.mockResolvedValueOnce('')
+
+  const version = await getSuggestedBugsnagGradleVersion('/random/path', logger)
+  expect(version).toBe('')
+})
diff --git a/packages/react-native-cli/src/lib/__test__/Insert.test.ts b/packages/react-native-cli/src/lib/__test__/Insert.test.ts
index c7d69ab6aa..e128d797b0 100644
--- a/packages/react-native-cli/src/lib/__test__/Insert.test.ts
+++ b/packages/react-native-cli/src/lib/__test__/Insert.test.ts
@@ -185,7 +185,7 @@ test('insertIos(): no identifiable app launch method', async () => {
   expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "AppDelegate.mm" automatically.'))
 })
 
-test('insertAndroid(): success', async () => {
+test('insertAndroid(): success (java)', async () => {
   const globMock = glob as unknown as jest.MockedFunction<typeof glob>
   globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.java']))
 
@@ -207,7 +207,29 @@ test('insertAndroid(): success', async () => {
   )
 })
 
-test('insertAndroid(): success, tolerates some differences in source', async () => {
+test('insertAndroid(): success (kotlin)', async () => {
+  const globMock = glob as unknown as jest.MockedFunction<typeof glob>
+  globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.kt']))
+
+  const mainApplication = await loadFixture(path.join(__dirname, 'fixtures', 'MainApplication-before.kt'))
+  const readFileMock = fs.readFile as jest.MockedFunction<typeof fs.readFile>
+  readFileMock.mockResolvedValue(mainApplication)
+
+  const writeFileMock = fs.writeFile as jest.MockedFunction<typeof fs.writeFile>
+
+  await insertAndroid('/random/path', logger)
+  expect(readFileMock).toHaveBeenCalledWith(
+    '/random/path/android/app/src/main/java/com/bugsnagreactnativeclitest/MainApplication.kt',
+    'utf8'
+  )
+  expect(writeFileMock).toHaveBeenCalledWith(
+    '/random/path/android/app/src/main/java/com/bugsnagreactnativeclitest/MainApplication.kt',
+    await loadFixture(path.join(__dirname, 'fixtures', 'MainApplication-after.kt')),
+    'utf8'
+  )
+})
+
+test('insertAndroid(): success, tolerates some differences in source (java)', async () => {
   const globMock = glob as unknown as jest.MockedFunction<typeof glob>
   globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.java']))
 
@@ -229,7 +251,29 @@ test('insertAndroid(): success, tolerates some differences in source', async ()
   )
 })
 
-test('insertAndroid(): already present', async () => {
+test('insertAndroid(): success, tolerates some differences in source (kotlin)', async () => {
+  const globMock = glob as unknown as jest.MockedFunction<typeof glob>
+  globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.kt']))
+
+  const mainApplication = await loadFixture(path.join(__dirname, 'fixtures', 'MainApplication-before-2.kt'))
+  const readFileMock = fs.readFile as jest.MockedFunction<typeof fs.readFile>
+  readFileMock.mockResolvedValue(mainApplication)
+
+  const writeFileMock = fs.writeFile as jest.MockedFunction<typeof fs.writeFile>
+
+  await insertAndroid('/random/path', logger)
+  expect(readFileMock).toHaveBeenCalledWith(
+    '/random/path/android/app/src/main/java/com/bugsnagreactnativeclitest/MainApplication.kt',
+    'utf8'
+  )
+  expect(writeFileMock).toHaveBeenCalledWith(
+    '/random/path/android/app/src/main/java/com/bugsnagreactnativeclitest/MainApplication.kt',
+    await loadFixture(path.join(__dirname, 'fixtures', 'MainApplication-after-2.kt')),
+    'utf8'
+  )
+})
+
+test('insertAndroid(): already present (java)', async () => {
   const globMock = glob as unknown as jest.MockedFunction<typeof glob>
   globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.java']))
 
@@ -249,6 +293,26 @@ test('insertAndroid(): already present', async () => {
   expect(logger.warn).toHaveBeenCalledWith('Bugsnag is already included, skipping')
 })
 
+test('insertAndroid(): already present (kotlin)', async () => {
+  const globMock = glob as unknown as jest.MockedFunction<typeof glob>
+  globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.kt']))
+
+  const mainApplication = await loadFixture(path.join(__dirname, 'fixtures', 'MainApplication-after.kt'))
+  const readFileMock = fs.readFile as jest.MockedFunction<typeof fs.readFile>
+  readFileMock.mockResolvedValue(mainApplication)
+
+  const writeFileMock = fs.writeFile as jest.MockedFunction<typeof fs.writeFile>
+
+  await insertAndroid('/random/path', logger)
+  expect(readFileMock).toHaveBeenCalledWith(
+    '/random/path/android/app/src/main/java/com/bugsnagreactnativeclitest/MainApplication.kt',
+    'utf8'
+  )
+  expect(writeFileMock).not.toHaveBeenCalled()
+
+  expect(logger.warn).toHaveBeenCalledWith('Bugsnag is already included, skipping')
+})
+
 test('insertAndroid(): failure to locate file', async () => {
   const globMock = glob as unknown as jest.MockedFunction<typeof glob>
   globMock.mockImplementation((glob, opts, cb) => cb(null, ['com/bugsnagreactnativeclitest/MainApplication.java']))
@@ -265,7 +329,7 @@ test('insertAndroid(): failure to locate file', async () => {
   )
   expect(writeFileMock).not.toHaveBeenCalled()
 
-  expect(logger.error).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication.java, MainApplication.kt or MainApplication" automatically.'))
+  expect(logger.error).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication" automatically.'))
 })
 
 test('insertAndroid(): failure to locate package directory', async () => {
@@ -279,7 +343,7 @@ test('insertAndroid(): failure to locate package directory', async () => {
   expect(readFileMock).not.toHaveBeenCalled()
   expect(writeFileMock).not.toHaveBeenCalled()
 
-  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication.java, MainApplication.kt or MainApplication" automatically.'))
+  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication" automatically.'))
 })
 
 test('insertAndroid(): project directory error', async () => {
@@ -293,7 +357,7 @@ test('insertAndroid(): project directory error', async () => {
   expect(readFileMock).not.toHaveBeenCalled()
   expect(writeFileMock).not.toHaveBeenCalled()
 
-  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication.java, MainApplication.kt or MainApplication" automatically.'))
+  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication" automatically.'))
 })
 
 test('insertAndroid(): no identifiable onCreate method', async () => {
@@ -311,5 +375,5 @@ test('insertAndroid(): no identifiable onCreate method', async () => {
   )
   expect(writeFileMock).not.toHaveBeenCalled()
 
-  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication.java, MainApplication.kt or MainApplication" automatically.'))
+  expect(logger.warn).toHaveBeenCalledWith(expect.stringContaining('Failed to update "MainApplication" automatically.'))
 })
diff --git a/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after-2.kt b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after-2.kt
new file mode 100644
index 0000000000..873c8130e8
--- /dev/null
+++ b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after-2.kt
@@ -0,0 +1,48 @@
+package com.bugsnagreactnativeclitest
+
+import com.bugsnag.android.Bugsnag
+import android.app.Application
+import com.facebook.react.PackageList
+import com.facebook.react.ReactApplication
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
+import com.facebook.react.flipper.ReactNativeFlipper
+import com.facebook.soloader.SoLoader
+
+class MainApplication : Application(), ReactApplication {
+
+  override val reactNativeHost: ReactNativeHost =
+      object : DefaultReactNativeHost(this) {
+        override fun getPackages(): List<ReactPackage> =
+            PackageList(this).packages.apply {
+              // Packages that cannot be autolinked yet can be added manually here, for example:
+              // add(MyReactNativePackage())
+            }
+
+        override fun getJSMainModuleName(): String = "index"
+
+        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+      }
+
+  override val reactHost: ReactHost
+    get() = getDefaultReactHost(this.applicationContext, reactNativeHost)
+
+  override fun onCreate() {
+    // something between curly brace and super call
+    super.onCreate()
+    Bugsnag.start(this)
+    SoLoader.init(this, false)
+    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
+      // If you opted-in for the New Architecture, we load the native entry point for this app.
+      load()
+    }
+    ReactNativeFlipper.initializeFlipper(this, reactNativeHost.reactInstanceManager)
+  }
+}
diff --git a/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after.kt b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after.kt
new file mode 100644
index 0000000000..67c3edb782
--- /dev/null
+++ b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-after.kt
@@ -0,0 +1,47 @@
+package com.bugsnagreactnativeclitest
+
+import com.bugsnag.android.Bugsnag
+import android.app.Application
+import com.facebook.react.PackageList
+import com.facebook.react.ReactApplication
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
+import com.facebook.react.flipper.ReactNativeFlipper
+import com.facebook.soloader.SoLoader
+
+class MainApplication : Application(), ReactApplication {
+
+  override val reactNativeHost: ReactNativeHost =
+      object : DefaultReactNativeHost(this) {
+        override fun getPackages(): List<ReactPackage> =
+            PackageList(this).packages.apply {
+              // Packages that cannot be autolinked yet can be added manually here, for example:
+              // add(MyReactNativePackage())
+            }
+
+        override fun getJSMainModuleName(): String = "index"
+
+        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+      }
+
+  override val reactHost: ReactHost
+    get() = getDefaultReactHost(this.applicationContext, reactNativeHost)
+
+  override fun onCreate() {
+    super.onCreate()
+    Bugsnag.start(this)
+    SoLoader.init(this, false)
+    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
+      // If you opted-in for the New Architecture, we load the native entry point for this app.
+      load()
+    }
+    ReactNativeFlipper.initializeFlipper(this, reactNativeHost.reactInstanceManager)
+  }
+}
diff --git a/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before-2.kt b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before-2.kt
new file mode 100644
index 0000000000..52b7349533
--- /dev/null
+++ b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before-2.kt
@@ -0,0 +1,46 @@
+package com.bugsnagreactnativeclitest
+
+import android.app.Application
+import com.facebook.react.PackageList
+import com.facebook.react.ReactApplication
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
+import com.facebook.react.flipper.ReactNativeFlipper
+import com.facebook.soloader.SoLoader
+
+class MainApplication : Application(), ReactApplication {
+
+  override val reactNativeHost: ReactNativeHost =
+      object : DefaultReactNativeHost(this) {
+        override fun getPackages(): List<ReactPackage> =
+            PackageList(this).packages.apply {
+              // Packages that cannot be autolinked yet can be added manually here, for example:
+              // add(MyReactNativePackage())
+            }
+
+        override fun getJSMainModuleName(): String = "index"
+
+        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+      }
+
+  override val reactHost: ReactHost
+    get() = getDefaultReactHost(this.applicationContext, reactNativeHost)
+
+  override fun onCreate() {
+    // something between curly brace and super call
+    super.onCreate()
+    SoLoader.init(this, false)
+    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
+      // If you opted-in for the New Architecture, we load the native entry point for this app.
+      load()
+    }
+    ReactNativeFlipper.initializeFlipper(this, reactNativeHost.reactInstanceManager)
+  }
+}
diff --git a/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before.kt b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before.kt
new file mode 100644
index 0000000000..71fe2e5995
--- /dev/null
+++ b/packages/react-native-cli/src/lib/__test__/fixtures/MainApplication-before.kt
@@ -0,0 +1,45 @@
+package com.bugsnagreactnativeclitest
+
+import android.app.Application
+import com.facebook.react.PackageList
+import com.facebook.react.ReactApplication
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.defaults.DefaultReactNativeHost
+import com.facebook.react.flipper.ReactNativeFlipper
+import com.facebook.soloader.SoLoader
+
+class MainApplication : Application(), ReactApplication {
+
+  override val reactNativeHost: ReactNativeHost =
+      object : DefaultReactNativeHost(this) {
+        override fun getPackages(): List<ReactPackage> =
+            PackageList(this).packages.apply {
+              // Packages that cannot be autolinked yet can be added manually here, for example:
+              // add(MyReactNativePackage())
+            }
+
+        override fun getJSMainModuleName(): String = "index"
+
+        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG
+
+        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
+        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
+      }
+
+  override val reactHost: ReactHost
+    get() = getDefaultReactHost(this.applicationContext, reactNativeHost)
+
+  override fun onCreate() {
+    super.onCreate()
+    SoLoader.init(this, false)
+    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
+      // If you opted-in for the New Architecture, we load the native entry point for this app.
+      load()
+    }
+    ReactNativeFlipper.initializeFlipper(this, reactNativeHost.reactInstanceManager)
+  }
+}
diff --git a/packages/react-native-cli/src/lib/__test__/fixtures/root-build-before-without-agp-version.gradle b/packages/react-native-cli/src/lib/__test__/fixtures/root-build-before-without-agp-version.gradle
new file mode 100644
index 0000000000..842db470dc
--- /dev/null
+++ b/packages/react-native-cli/src/lib/__test__/fixtures/root-build-before-without-agp-version.gradle
@@ -0,0 +1,37 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+    ext {
+        buildToolsVersion = "29.0.2"
+        minSdkVersion = 16
+        compileSdkVersion = 29
+        targetSdkVersion = 29
+    }
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath("com.android.tools.build:gradle")
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        mavenLocal()
+        maven {
+            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+            url("$rootDir/../node_modules/react-native/android")
+        }
+        maven {
+            // Android JSC is installed from npm
+            url("$rootDir/../node_modules/jsc-android/dist")
+        }
+
+        google()
+        jcenter()
+        maven { url 'https://www.jitpack.io' }
+    }
+}