diff --git a/RCTAppleHealthKit.xcodeproj/project.pbxproj b/RCTAppleHealthKit.xcodeproj/project.pbxproj
index 0f9d512a7b3846fb76126d331d4754b013b40809..51ca4183b8a5be5887e74bcc6c688bcb776573cf 100644
--- a/RCTAppleHealthKit.xcodeproj/project.pbxproj
+++ b/RCTAppleHealthKit.xcodeproj/project.pbxproj
@@ -19,6 +19,7 @@
 		61232F931E303758000A5026 /* RCTAppleHealthKit+Methods_Mindfulness.m in Sources */ = {isa = PBXBuildFile; fileRef = 61232F921E303758000A5026 /* RCTAppleHealthKit+Methods_Mindfulness.m */; };
 		64C42D4A1D351A8800A0A8F7 /* RCTAppleHealthKit+Methods_Vitals.m in Sources */ = {isa = PBXBuildFile; fileRef = 64C42D491D351A8800A0A8F7 /* RCTAppleHealthKit+Methods_Vitals.m */; };
 		64E0E73F1D37947B00EAB905 /* RCTAppleHealthKit+Methods_Results.m in Sources */ = {isa = PBXBuildFile; fileRef = 64E0E73E1D37947B00EAB905 /* RCTAppleHealthKit+Methods_Results.m */; };
+		83C70EFC1FDFA6BB00AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.m in Sources */ = {isa = PBXBuildFile; fileRef = 83C70EFB1FDFA6BB00AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -58,6 +59,8 @@
 		64C42D491D351A8800A0A8F7 /* RCTAppleHealthKit+Methods_Vitals.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "RCTAppleHealthKit+Methods_Vitals.m"; sourceTree = "<group>"; };
 		64E0E73D1D37947B00EAB905 /* RCTAppleHealthKit+Methods_Results.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "RCTAppleHealthKit+Methods_Results.h"; sourceTree = "<group>"; };
 		64E0E73E1D37947B00EAB905 /* RCTAppleHealthKit+Methods_Results.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "RCTAppleHealthKit+Methods_Results.m"; sourceTree = "<group>"; };
+		83C70EFA1FDFA59300AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "RCTAppleHealthKit+NSUserDefaults.h"; sourceTree = "<group>"; };
+		83C70EFB1FDFA6BB00AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "RCTAppleHealthKit+NSUserDefaults.m"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -112,6 +115,8 @@
 				377D44F21D247D0A004E35CB /* RCTAppleHealthKit+Methods_Characteristic.m */,
 				37837E7B1DCFE270000201A0 /* RCTAppleHealthKit+Methods_Sleep.h */,
 				37837E7C1DCFE270000201A0 /* RCTAppleHealthKit+Methods_Sleep.m */,
+				83C70EFA1FDFA59300AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.h */,
+				83C70EFB1FDFA6BB00AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.m */,
 			);
 			path = RCTAppleHealthKit;
 			sourceTree = "<group>";
@@ -181,6 +186,7 @@
 				64C42D4A1D351A8800A0A8F7 /* RCTAppleHealthKit+Methods_Vitals.m in Sources */,
 				3774C8931D2092F20000B3F3 /* RCTAppleHealthKit.m in Sources */,
 				377D44F31D247D0A004E35CB /* RCTAppleHealthKit+Methods_Characteristic.m in Sources */,
+				83C70EFC1FDFA6BB00AD7AA9 /* RCTAppleHealthKit+NSUserDefaults.m in Sources */,
 				3774C89E1D2095850000B3F3 /* RCTAppleHealthKit+TypesAndPermissions.m in Sources */,
 				3774C8D71D20C65F0000B3F3 /* RCTAppleHealthKit+Methods_Fitness.m in Sources */,
 			);
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h
new file mode 100644
index 0000000000000000000000000000000000000000..6388b437b1c76c3d31067df4312ba8609aa26634
--- /dev/null
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h
@@ -0,0 +1,16 @@
+//
+//  RCTAppleHealthKit+NSUserDefaults.h
+//  RCTAppleHealthKit
+//
+//  Created by rosswang on 2017/12/12.
+//  Copyright © 2017年 Greg Wilson. All rights reserved.
+//
+
+#import "RCTAppleHealthKit.h"
+
+@interface RCTAppleHealthKit (Methods_UserDefaults)
+
+- (void)set_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+- (void)reset_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+
+@end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m
new file mode 100644
index 0000000000000000000000000000000000000000..458257a7a8bab9fc72662c5e1beaa5fbed93698f
--- /dev/null
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m
@@ -0,0 +1,35 @@
+//
+//  RCTAppleHealthKit+NSUserDefaults.m
+//  RCTAppleHealthKit
+//
+//  Created by rosswang on 2017/12/12.
+//  Copyright © 2017年 Greg Wilson. All rights reserved.
+//
+
+#import "RCTAppleHealthKit+NSUserDefaults.h"
+#import "RCTAppleHealthKit+Utils.h"
+
+@implementation RCTAppleHealthKit (Methods_UserDefaults)
+
+- (void)set_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    NSString *str = [input objectForKey:@"key"];
+    NSData *newAnchor = [[NSUserDefaults standardUserDefaults] objectForKey:[@"New" stringByAppendingString:str]];
+    [[NSUserDefaults standardUserDefaults] setObject:newAnchor forKey:[@"Old" stringByAppendingString:str]];
+    NSDictionary *result = @{
+                             @"status" : @(true)
+                             };
+    callback(@[[NSNull null], result]);
+}
+
+- (void)reset_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    NSString *str = [input objectForKey:@"key"];
+    [[NSUserDefaults standardUserDefaults] setObject:HKAnchoredObjectQueryNoAnchor forKey:[@"Old" stringByAppendingString:str]];
+    NSDictionary *result = @{
+                             @"status" : @(true)
+                             };
+    callback(@[[NSNull null], result]);
+}
+
+@end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
index 6352072bba3356659d1223a4f19b8dc46d94d748..9bf9c4f8d1d27d2c3d0552799ebc58b55bd483b1 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.m
@@ -515,7 +515,7 @@
         }
         
         NSData *data = [NSKeyedArchiver archivedDataWithRootObject:newAnchor];
-        [[NSUserDefaults standardUserDefaults] setObject:data forKey:quantityType.identifier];
+        [[NSUserDefaults standardUserDefaults] setObject:data forKey:[RCTAppleHealthKit stringFromType:quantityType status:false]];
         
         if (completion) {
             NSMutableArray *data = [NSMutableArray arrayWithCapacity:1];
@@ -582,7 +582,7 @@
         }
     };
     
-    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:quantityType.identifier];
+    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:[RCTAppleHealthKit stringFromType:quantityType status:true]];
     HKQueryAnchor *anchor = [NSKeyedUnarchiver unarchiveObjectWithData:data];
     
     HKAnchoredObjectQuery *anchorQuery = [[HKAnchoredObjectQuery alloc] initWithType:quantityType
@@ -610,7 +610,7 @@
         }
         
         NSData *data = [NSKeyedArchiver archivedDataWithRootObject:newAnchor];
-        [[NSUserDefaults standardUserDefaults] setObject:data forKey:quantityType.identifier];
+        [[NSUserDefaults standardUserDefaults] setObject:data forKey:[RCTAppleHealthKit stringFromType:quantityType status:false]];
         
         if (completion) {
             NSMutableArray *data = [NSMutableArray arrayWithCapacity:1];
@@ -644,7 +644,7 @@
         }
     };
     
-    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:quantityType.identifier];
+    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:[RCTAppleHealthKit stringFromType:quantityType status:true]];
     HKQueryAnchor *anchor = [NSKeyedUnarchiver unarchiveObjectWithData:data];
     
     HKAnchoredObjectQuery *anchorQuery = [[HKAnchoredObjectQuery alloc] initWithType:quantityType
@@ -672,7 +672,7 @@
         }
         
         NSData *data = [NSKeyedArchiver archivedDataWithRootObject:newAnchor];
-        [[NSUserDefaults standardUserDefaults] setObject:data forKey:categoryType.identifier];
+        [[NSUserDefaults standardUserDefaults] setObject:data forKey:[RCTAppleHealthKit stringFromType:categoryType status:false]];
         
         if (completion) {
             NSMutableArray *data = [NSMutableArray arrayWithCapacity:1];
@@ -739,7 +739,7 @@
         }
     };
     
-    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:categoryType.identifier];
+    NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:[RCTAppleHealthKit stringFromType:categoryType status:true]];
     HKQueryAnchor *anchor = [NSKeyedUnarchiver unarchiveObjectWithData:data];
     
     HKAnchoredObjectQuery *anchorQuery = [[HKAnchoredObjectQuery alloc] initWithType:categoryType
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.h b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.h
index f5d33f380636b123fd370874e61fcbebb104c9e6..2543ac0681763758bc05e096e9b7d61242a45908 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.h
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.h
@@ -33,4 +33,6 @@
 
 + (NSMutableArray *)reverseNSMutableArray:(NSMutableArray *)array;
 
++ (NSString *)stringFromType:(HKSampleType *)type status:(bool)status;
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
index 9ffb0967d3a067a481f2f6bd2611caea4948991e..555e51332e7b398f4b00d7d41a09e6a4d62d244d 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
@@ -320,4 +320,21 @@
     return array;
 }
 
++ (NSString *)stringFromType:(HKSampleType *)type status:(bool)status {
+    NSString *str = status ? @"Old" : @"New";
+    if ([type isEqual:[HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeartRate]]) {
+        str = [str stringByAppendingString:@"HeartRateSync"];
+    }
+    if ([type isEqual:[HKCorrelationType correlationTypeForIdentifier:HKCorrelationTypeIdentifierBloodPressure]]) {
+        str = [str stringByAppendingString:@"BloodPressureSync"];
+    }
+    if ([type isEqual:[HKObjectType categoryTypeForIdentifier:HKCategoryTypeIdentifierSleepAnalysis]]) {
+        str = [str stringByAppendingString:@"SleepSync"];
+    }
+    if ([type isEqual:[HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount]]) {
+        str = [str stringByAppendingString:@"StepCountSync"];
+    }
+    return str;
+}
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit.m b/RCTAppleHealthKit/RCTAppleHealthKit.m
index 24ec62fbd80f155879208850f899eadb9dc28c20..bff6e781938f2061ede84c23cf3f213b213ae066 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit.m
@@ -16,6 +16,7 @@
 #import "RCTAppleHealthKit+Methods_Results.h"
 #import "RCTAppleHealthKit+Methods_Sleep.h"
 #import "RCTAppleHealthKit+Methods_Mindfulness.h"
+#import "RCTAppleHealthKit+NSUserDefaults.h"
 
 #import <React/RCTBridgeModule.h>
 #import <React/RCTEventDispatcher.h>
@@ -195,6 +196,15 @@ RCT_EXPORT_METHOD(saveMindfulSession:(NSDictionary *)input callback:(RCTResponse
     [self mindfulness_saveMindfulSession:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(setUserDefaults:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self set_UserDefaultsByKey:input callback:callback];
+}
+
+RCT_EXPORT_METHOD(resetUserDefaults:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self reset_UserDefaultsByKey:input callback:callback];
+}
 
 - (void)isHealthKitAvailable:(RCTResponseSenderBlock)callback
 {