diff --git a/android/src/main/java/to/holepunch/bare/kit/MessagingService.java b/android/src/main/java/to/holepunch/bare/kit/MessagingService.java
index b5f104d..7bd8f4f 100644
--- a/android/src/main/java/to/holepunch/bare/kit/MessagingService.java
+++ b/android/src/main/java/to/holepunch/bare/kit/MessagingService.java
@@ -27,10 +27,50 @@ protected MessagingService(ReplyCallback callback) {
     this.callback = callback;
   }
 
+  protected MessagingService(String filename, ByteBuffer source, ReplyCallback callback) {
+    this(callback);
+    start(filename, source);
+  }
+
+  protected MessagingService(String filename, String source, Charset charset, ReplyCallback callback) {
+    this(callback);
+    start(filename, source, charset);
+  }
+
+  protected MessagingService(String filename, String source, String charset, ReplyCallback callback) {
+    this(callback);
+    start(filename, source, charset);
+  }
+
+  protected MessagingService(String filename, InputStream source, ReplyCallback callback) throws IOException {
+    this(callback);
+    start(filename, source);
+  }
+
   protected MessagingService() {
     this(null);
   }
 
+  protected MessagingService(String filename, ByteBuffer source) {
+    this();
+    start(filename, source);
+  }
+
+  protected MessagingService(String filename, String source, Charset charset) {
+    this();
+    start(filename, source, charset);
+  }
+
+  protected MessagingService(String filename, String source, String charset) {
+    this();
+    start(filename, source, charset);
+  }
+
+  protected MessagingService(String filename, InputStream source) throws IOException {
+    this();
+    start(filename, source);
+  }
+
   protected void
   start (String filename, ByteBuffer source) {
     this.worklet.start(filename, source);
diff --git a/apple/BareKit/BareKit.h b/apple/BareKit/BareKit.h
index 4b07ddd..57d0916 100644
--- a/apple/BareKit/BareKit.h
+++ b/apple/BareKit/BareKit.h
@@ -19,6 +19,13 @@
 - (void)start:(NSString *_Nonnull)filename
        source:(NSString *_Nonnull)source
      encoding:(NSStringEncoding)encoding;
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+     inBundle:(NSBundle *_Nonnull)bundle;
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+  inDirectory:(NSString *_Nonnull)subpath
+     inBundle:(NSBundle *_Nonnull)bundle;
 - (void)suspend;
 - (void)suspendWithLinger:(int)linger;
 - (void)resume;
@@ -83,7 +90,6 @@
 @end
 
 typedef void (^BareRPCRequestHandler)(BareRPCIncomingRequest *_Nullable request, NSError *_Nullable error);
-typedef void (^BareRPCResponseHandler)(NSData *_Nullable data, NSError *_Nullable error);
 
 @interface BareRPC : NSObject
 
@@ -103,6 +109,8 @@ typedef void (^BareRPCResponseHandler)(NSData *_Nullable data, NSError *_Nullabl
 
 @property(nonatomic, assign, nonnull) id<BareNotificationServiceDelegate> delegate;
 
+- (_Nullable instancetype)init;
+- (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename;
 - (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
                                     source:(NSData *_Nonnull)source;
 - (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
@@ -115,6 +123,19 @@ typedef void (^BareRPCResponseHandler)(NSData *_Nullable data, NSError *_Nullabl
                                     ofType:(NSString *_Nonnull)type
                                inDirectory:(NSString *_Nonnull)subpath
                                   inBundle:(NSBundle *_Nonnull)bundle;
+- (void)start:(NSString *_Nonnull)filename;
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSData *_Nonnull)source;
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSString *_Nonnull)source
+     encoding:(NSStringEncoding)encoding;
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+     inBundle:(NSBundle *_Nonnull)bundle;
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+  inDirectory:(NSString *_Nonnull)subpath
+     inBundle:(NSBundle *_Nonnull)bundle;
 
 @end
 
diff --git a/apple/BareKit/BareKit.m b/apple/BareKit/BareKit.m
index 710a268..85e28f2 100644
--- a/apple/BareKit/BareKit.m
+++ b/apple/BareKit/BareKit.m
@@ -116,7 +116,8 @@ - (void)start:(NSString *_Nonnull)filename {
   _outgoing = _worklet.outgoing;
 }
 
-- (void)start:(NSString *_Nonnull)filename source:(NSData *_Nonnull)source {
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSData *_Nonnull)source {
   int err;
 
   const char *_filename = [filename cStringUsingEncoding:NSUTF8StringEncoding];
@@ -130,10 +131,29 @@ - (void)start:(NSString *_Nonnull)filename source:(NSData *_Nonnull)source {
   _outgoing = _worklet.outgoing;
 }
 
-- (void)start:(NSString *_Nonnull)filename source:(NSString *_Nonnull)source encoding:(NSStringEncoding)encoding {
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSString *_Nonnull)source
+     encoding:(NSStringEncoding)encoding {
   [self start:filename source:[source dataUsingEncoding:encoding]];
 }
 
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+     inBundle:(NSBundle *_Nonnull)bundle {
+  NSString *path = [bundle pathForResource:name ofType:type];
+
+  [self start:path source:[NSData dataWithContentsOfFile:path]];
+}
+
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+  inDirectory:(NSString *_Nonnull)subpath
+     inBundle:(NSBundle *_Nonnull)bundle {
+  NSString *path = [bundle pathForResource:name ofType:type inDirectory:subpath];
+
+  [self start:path source:[NSData dataWithContentsOfFile:path]];
+}
+
 - (void)suspend {
   int err;
   err = bare_worklet_suspend(&_worklet, 0);
@@ -311,7 +331,8 @@ @implementation BareRPCIncomingRequest {
   BareRPC *_rpc;
 }
 
-- (_Nullable instancetype)initWithRPC:(BareRPC *_Nonnull)rpc request:(rpc_message_t *)request {
+- (_Nullable instancetype)initWithRPC:(BareRPC *_Nonnull)rpc
+                              request:(rpc_message_t *)request {
   self = [super init];
 
   if (self) {
@@ -339,6 +360,8 @@ - (void)reply:(NSString *_Nonnull)data
 
 @end
 
+typedef void (^BareRPCResponseHandler)(NSData *_Nullable data, NSError *_Nullable error);
+
 @implementation BareRPCOutgoingRequest {
   BareRPC *_rpc;
   BareRPCResponseHandler _responseHandler;
@@ -558,8 +581,7 @@ @implementation BareNotificationService {
   BareWorklet *_worklet;
 }
 
-- (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
-                                    source:(NSData *_Nonnull)source {
+- (_Nullable instancetype)init {
   self = [super init];
 
   if (self) {
@@ -568,8 +590,27 @@ - (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
     [BareWorklet optimizeForMemory:YES];
 
     _worklet = [[BareWorklet alloc] init];
+  }
+
+  return self;
+}
+
+- (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename {
+  self = [self init];
+
+  if (self) {
+    [self start:filename];
+  }
+
+  return self;
+}
+
+- (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
+                                    source:(NSData *_Nonnull)source {
+  self = [self init];
 
-    [_worklet start:filename source:source];
+  if (self) {
+    [self start:filename source:source];
   }
 
   return self;
@@ -578,27 +619,66 @@ - (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
 - (_Nullable instancetype)initWithFilename:(NSString *_Nonnull)filename
                                     source:(NSString *_Nonnull)source
                                   encoding:(NSStringEncoding)encoding {
-  return [self initWithFilename:filename
-                         source:[source dataUsingEncoding:encoding]];
+  self = [self init];
+
+  if (self) {
+    [self start:filename source:source encoding:encoding];
+  }
+
+  return self;
 }
 
 - (_Nullable instancetype)initWithResource:(NSString *_Nonnull)name
                                     ofType:(NSString *_Nonnull)type
                                   inBundle:(NSBundle *_Nonnull)bundle {
-  NSString *path = [bundle pathForResource:name ofType:type];
+  self = [self init];
 
-  return [self initWithFilename:path
-                         source:[NSData dataWithContentsOfFile:path]];
+  if (self) {
+    [self start:name ofType:type inBundle:bundle];
+  }
+
+  return self;
 }
 
 - (_Nullable instancetype)initWithResource:(NSString *_Nonnull)name
                                     ofType:(NSString *_Nonnull)type
                                inDirectory:(NSString *_Nonnull)subpath
                                   inBundle:(NSBundle *_Nonnull)bundle {
-  NSString *path = [bundle pathForResource:name ofType:type inDirectory:subpath];
+  self = [self init];
+
+  if (self) {
+    [self start:name ofType:type inDirectory:subpath inBundle:bundle];
+  }
+
+  return self;
+}
+
+- (void)start:(NSString *_Nonnull)filename {
+  [_worklet start:filename];
+}
+
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSData *_Nonnull)source {
+  [_worklet start:filename source:source];
+}
+
+- (void)start:(NSString *_Nonnull)filename
+       source:(NSString *_Nonnull)source
+     encoding:(NSStringEncoding)encoding {
+  [_worklet start:filename source:source encoding:encoding];
+}
+
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+     inBundle:(NSBundle *_Nonnull)bundle {
+  [_worklet start:name ofType:type inBundle:bundle];
+}
 
-  return [self initWithFilename:path
-                         source:[NSData dataWithContentsOfFile:path]];
+- (void)start:(NSString *_Nonnull)name
+       ofType:(NSString *_Nonnull)type
+  inDirectory:(NSString *_Nonnull)subpath
+     inBundle:(NSBundle *_Nonnull)bundle {
+  [_worklet start:name ofType:type inDirectory:subpath inBundle:bundle];
 }
 
 - (void)didReceiveNotificationRequest:(UNNotificationRequest *)request