diff --git a/apps/ios/Shared/SimpleXApp.swift b/apps/ios/Shared/SimpleXApp.swift
index f030f105b..fd1ec9511 100644
--- a/apps/ios/Shared/SimpleXApp.swift
+++ b/apps/ios/Shared/SimpleXApp.swift
@@ -27,7 +27,8 @@ struct SimpleXApp: App {
 
     init() {
         DispatchQueue.global(qos: .background).sync {
-            hs_init(0, nil)
+            haskell_init()
+//            hs_init(0, nil)
         }
         UserDefaults.standard.register(defaults: appDefaults)
         setGroupDefaults()
diff --git a/apps/ios/SimpleX.xcodeproj/project.pbxproj b/apps/ios/SimpleX.xcodeproj/project.pbxproj
index d2456b696..3326dc060 100644
--- a/apps/ios/SimpleX.xcodeproj/project.pbxproj
+++ b/apps/ios/SimpleX.xcodeproj/project.pbxproj
@@ -118,6 +118,8 @@
 		5CCB939C297EFCB100399E78 /* NavStackCompat.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CCB939B297EFCB100399E78 /* NavStackCompat.swift */; };
 		5CCD403427A5F6DF00368C90 /* AddContactView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD403327A5F6DF00368C90 /* AddContactView.swift */; };
 		5CCD403727A5F9A200368C90 /* ScanToConnectView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD403627A5F9A200368C90 /* ScanToConnectView.swift */; };
+		5CD67B8F2B0E858A00C510B1 /* hs_init.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CD67B8D2B0E858A00C510B1 /* hs_init.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		5CD67B902B0E858A00C510B1 /* hs_init.c in Sources */ = {isa = PBXBuildFile; fileRef = 5CD67B8E2B0E858A00C510B1 /* hs_init.c */; };
 		5CDCAD482818589900503DA2 /* NotificationService.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5CDCAD472818589900503DA2 /* NotificationService.swift */; };
 		5CE2BA702845308900EC33A6 /* SimpleXChat.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 5CE2BA682845308900EC33A6 /* SimpleXChat.framework */; };
 		5CE2BA712845308900EC33A6 /* SimpleXChat.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 5CE2BA682845308900EC33A6 /* SimpleXChat.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -399,6 +401,8 @@
 		5CCB939B297EFCB100399E78 /* NavStackCompat.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NavStackCompat.swift; sourceTree = "<group>"; };
 		5CCD403327A5F6DF00368C90 /* AddContactView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AddContactView.swift; sourceTree = "<group>"; };
 		5CCD403627A5F9A200368C90 /* ScanToConnectView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScanToConnectView.swift; sourceTree = "<group>"; };
+		5CD67B8D2B0E858A00C510B1 /* hs_init.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = hs_init.h; sourceTree = "<group>"; };
+		5CD67B8E2B0E858A00C510B1 /* hs_init.c */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.c; path = hs_init.c; sourceTree = "<group>"; };
 		5CDCAD452818589900503DA2 /* SimpleX NSE.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = "SimpleX NSE.appex"; sourceTree = BUILT_PRODUCTS_DIR; };
 		5CDCAD472818589900503DA2 /* NotificationService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationService.swift; sourceTree = "<group>"; };
 		5CDCAD492818589900503DA2 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -808,6 +812,8 @@
 				5CE2BA8A2845332200EC33A6 /* SimpleX.h */,
 				5CE2BA78284530CC00EC33A6 /* SimpleXChat.docc */,
 				5CE2BA96284537A800EC33A6 /* dummy.m */,
+				5CD67B8D2B0E858A00C510B1 /* hs_init.h */,
+				5CD67B8E2B0E858A00C510B1 /* hs_init.c */,
 			);
 			path = SimpleXChat;
 			sourceTree = "<group>";
@@ -892,6 +898,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				5CE2BA77284530BF00EC33A6 /* SimpleXChat.h in Headers */,
+				5CD67B8F2B0E858A00C510B1 /* hs_init.h in Headers */,
 				5CE2BA952845354B00EC33A6 /* SimpleX.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -1262,6 +1269,7 @@
 				5C00168128C4FE760094D739 /* KeyChain.swift in Sources */,
 				5CE2BA97284537A800EC33A6 /* dummy.m in Sources */,
 				5CE2BA922845340900EC33A6 /* FileUtils.swift in Sources */,
+				5CD67B902B0E858A00C510B1 /* hs_init.c in Sources */,
 				5CE2BA91284533A300EC33A6 /* Notifications.swift in Sources */,
 				5CE2BA79284530CC00EC33A6 /* SimpleXChat.docc in Sources */,
 				5CE2BA90284533A300EC33A6 /* JSON.swift in Sources */,
diff --git a/apps/ios/SimpleXChat/SimpleX.h b/apps/ios/SimpleXChat/SimpleX.h
index 250f1cb73..2872922a9 100644
--- a/apps/ios/SimpleXChat/SimpleX.h
+++ b/apps/ios/SimpleXChat/SimpleX.h
@@ -9,7 +9,7 @@
 #ifndef SimpleX_h
 #define SimpleX_h
 
-#endif /* SimpleX_h */
+#include "hs_init.h"
 
 extern void hs_init(int argc, char **argv[]);
 
@@ -42,3 +42,5 @@ extern char *chat_encrypt_file(char *fromPath, char *toPath);
 
 // chat_decrypt_file returns null-terminated string with the error message
 extern char *chat_decrypt_file(char *fromPath, char *key, char *nonce, char *toPath);
+
+#endif /* SimpleX_h */
diff --git a/apps/ios/SimpleXChat/hs_init.c b/apps/ios/SimpleXChat/hs_init.c
new file mode 100644
index 000000000..7a5ea2456
--- /dev/null
+++ b/apps/ios/SimpleXChat/hs_init.c
@@ -0,0 +1,25 @@
+//
+//  hs_init.c
+//  SimpleXChat
+//
+//  Created by Evgeny on 22/11/2023.
+//  Copyright © 2023 SimpleX Chat. All rights reserved.
+//
+
+#include "hs_init.h"
+
+extern void hs_init_with_rtsopts(int * argc, char **argv[]);
+
+void haskell_init(void) {
+    int argc = 5;
+    char *argv[] = {
+        "simplex",
+        "+RTS", // requires `hs_init_with_rtsopts`
+        "-A16m", // chunk size for new allocations
+        "-H64m", // initial heap size
+        "-xn", // non-moving GC
+        0
+    };
+    char **pargv = argv;
+    hs_init_with_rtsopts(&argc, &pargv);
+}
diff --git a/apps/ios/SimpleXChat/hs_init.h b/apps/ios/SimpleXChat/hs_init.h
new file mode 100644
index 000000000..48850e819
--- /dev/null
+++ b/apps/ios/SimpleXChat/hs_init.h
@@ -0,0 +1,14 @@
+//
+//  hs_init.h
+//  SimpleXChat
+//
+//  Created by Evgeny on 22/11/2023.
+//  Copyright © 2023 SimpleX Chat. All rights reserved.
+//
+
+#ifndef hs_init_h
+#define hs_init_h
+
+void haskell_init(void);
+
+#endif /* hs_init_h */