diff --git a/native/ios/Comm/AppDelegate.mm b/native/ios/Comm/AppDelegate.mm
--- a/native/ios/Comm/AppDelegate.mm
+++ b/native/ios/Comm/AppDelegate.mm
@@ -19,6 +19,8 @@
 #import "NetworkModule.h"
 #import "SQLiteQueryExecutor.h"
 #import "Tools.h"
+#import <cstdio>
+#import <stdexcept>
 #import <string>
 
 #ifdef FB_SONARKIT_ENABLED
@@ -232,6 +234,25 @@
 - (void)attemptDatabaseInitialization {
   std::string sqliteFilePath =
       std::string([[Tools getSQLiteFilePath] UTF8String]);
+  /*
+  Previous versions of Comm app used to keep SQLite database at location
+  that was specific to the app. Now that we share SQLite database with
+  NotificationService extension we need to keep the database in place
+  defined by App Groups. The code below is a migration fired if user
+  upgrades from version using app-specific path to newer that uses
+  App Groups.
+  */
+  NSString *appSpecificSQLiteFilePath = [Tools getAppSpecificSQLiteFilePath];
+  if ([NSFileManager.defaultManager
+          fileExistsAtPath:appSpecificSQLiteFilePath]) {
+    if (std::rename(
+            std::string([appSpecificSQLiteFilePath UTF8String]).c_str(),
+            sqliteFilePath.c_str())) {
+      throw std::runtime_error(
+          "Failed to move SQLite database from app-specific to app group "
+          "location");
+    }
+  }
   comm::SQLiteQueryExecutor::initialize(sqliteFilePath);
 }
 
diff --git a/native/ios/Comm/Tools.h b/native/ios/Comm/Tools.h
--- a/native/ios/Comm/Tools.h
+++ b/native/ios/Comm/Tools.h
@@ -3,5 +3,6 @@
 #import <UIKit/UIKit.h>
 
 @interface Tools : NSObject
++ (NSString *)getAppSpecificSQLiteFilePath;
 + (NSString *)getSQLiteFilePath;
 @end
diff --git a/native/ios/Comm/Tools.mm b/native/ios/Comm/Tools.mm
--- a/native/ios/Comm/Tools.mm
+++ b/native/ios/Comm/Tools.mm
@@ -5,6 +5,16 @@
 @implementation Tools
 
 + (NSString *)getSQLiteFilePath {
+  NSURL *groupUrl = [NSFileManager.defaultManager
+      containerURLForSecurityApplicationGroupIdentifier:@"group.app.comm"];
+  if (groupUrl == nil) {
+    throw std::runtime_error(
+        "Failed to resolve database path - could not find groupUrl");
+  }
+  return [groupUrl URLByAppendingPathComponent:@"comm.sqlite"].path;
+}
+
++ (NSString *)getAppSpecificSQLiteFilePath {
   NSError *err = nil;
   NSURL *documentsUrl =
       [NSFileManager.defaultManager URLForDirectory:NSDocumentDirectory