diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h
index 6388b437b1c76c3d31067df4312ba8609aa26634..acac28b375fe98bd25f3e75f4eeb6817905d3773 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.h
@@ -13,4 +13,7 @@
 - (void)set_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 - (void)reset_UserDefaultsByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 
+- (void)get_TimestampByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+- (void)set_TimestampByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m
index 458257a7a8bab9fc72662c5e1beaa5fbed93698f..2f3e7af1e725aa120e27b45f7fa31335ce2b94b1 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+NSUserDefaults.m
@@ -32,4 +32,43 @@
     callback(@[[NSNull null], result]);
 }
 
+- (void)get_TimestampByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    NSString *key = [input objectForKey:@"key"];
+    NSURL *url = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
+    NSString *filePath = [url.path stringByAppendingPathComponent:key];
+    NSString *content = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];
+    
+    if (content != nil) {
+        NSDictionary *result = @{
+                   @"timestamp" : content
+                   };
+        callback(@[[NSNull null], result]);
+    } else {
+        callback(@[[NSNull null]]);
+    }
+}
+
+- (void)set_TimestampByKey:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    NSString *key = [input objectForKey:@"key"];
+    NSString *timestamp = [input objectForKey:@"timestamp"];
+    NSURL *url = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
+    NSString *filePath = [url.path stringByAppendingPathComponent:key];
+    NSError *error;
+    BOOL ok = [timestamp writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error];
+    NSDictionary *result;
+    if (!ok) {
+        NSLog(@"Error writing file at %@\n%@", filePath, [error localizedFailureReason]);
+        result = @{
+                   @"status" : @(false)
+                   };
+    } else {
+        result = @{
+                   @"status" : @(true)
+                   };
+    }
+    callback(@[[NSNull null], result]);
+}
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit.m b/RCTAppleHealthKit/RCTAppleHealthKit.m
index bff6e781938f2061ede84c23cf3f213b213ae066..5ab849251c62dcf947caf7194b947223ddc066e4 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit.m
@@ -206,6 +206,16 @@ RCT_EXPORT_METHOD(resetUserDefaults:(NSDictionary *)input callback:(RCTResponseS
     [self reset_UserDefaultsByKey:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(getLastTimestamp:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self get_TimestampByKey:input callback:callback];
+}
+
+RCT_EXPORT_METHOD(setTimestamp:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self set_TimestampByKey:input callback:callback];
+}
+
 - (void)isHealthKitAvailable:(RCTResponseSenderBlock)callback
 {
     BOOL isAvailable = NO;