diff --git a/Docs/API.md b/Docs/API.md
index 5e256bf8..a41f0116 100755
--- a/Docs/API.md
+++ b/Docs/API.md
@@ -21,6 +21,7 @@
 - [trackCrossPromotionImpression](#trackCrossPromotionImpression) 
 - [trackAndOpenStore](#trackAndOpenStore) 
 - [setCurrencyCode](#setCurrencyCode) 
+- [setDeviceTrackingDisabled](#setDeviceTrackingDisabled)
 
 
 ---
@@ -656,3 +657,23 @@ appsFlyer.setCurrencyCode(currencyCode, () => {});
 ```
 
 ---
+
+##### <a id="setDeviceTrackingDisabled"> **`setDeviceTrackingDisabled(isDeviceTrackingDisabled, callback)`**
+
+It is possible to anonymize specific user identifiers within AppsFlyer analytics.<br/>
+This complies with both the latest privacy requirements (GDPR, COPPA) and Facebook's data and privacy policies.<br/>
+To anonymize an app user:<br/>
+
+| parameter                   | type     | description                                                |
+| ----------                  |----------|------------------                                          |
+| isDeviceTrackingDisabled    | boolean  | True if want Anonymize user Data (default value is false). |
+| callback                    | function | success callback                                           |
+
+
+*Example:*
+
+```javascript
+appsFlyer.setDeviceTrackingDisabled(true, () => {});
+```
+
+---
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 00000000..a4ed8477
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,86 @@
+/**
+ * Typescript Definition Sync with v5.1.1
+ **/
+declare module "react-native-appsflyer" {
+    type Response<T>    = void | Promise<T>;
+    type SuccessCB      = (result?:any) => any;
+    type ErrorCB        = (error?:any) => any;
+    export type ConversionData = {
+        status: "success" | "failure",
+        type: "onAppOpenAttribution"
+            | "onInstallConversionDataLoaded"
+            | "onAttributionFailure"
+            | "onInstallConversionFailure",
+        data: {
+            is_first_launch: "true" | "false";
+            media_source: string;
+            campaign: string;
+            af_status : "Organic" | "Non-organic";
+            [key:string]:any;
+        }
+    }
+
+    export enum AF_EMAIL_CRYPT_TYPE {
+        NONE,
+        SHA1,
+        MD5
+    }
+
+    export interface InitSDKOptions {
+        devKey:string;
+        appId?:string; //for iOS
+        isDebug?:boolean;
+    }
+
+    export interface SetEmailsOptions {
+        emails?:string[];
+        emailsCryptType:AF_EMAIL_CRYPT_TYPE | 0 | 1 | 2;
+    }
+
+    export interface GenerateInviteLinkParams {
+        channel: string;
+        campaign?: string;
+        customerID?: string;
+        userParams?: object;
+        [key:string]:any;
+    }
+
+    const appsFlyer: {
+        onInstallConversionData(callback:(data:ConversionData)=>any): () => void;
+        onAppOpenAttribution(callback:(data:any)=>any): () => void;
+
+        initSdk(options:InitSDKOptions, successC?:SuccessCB, errorC?:ErrorCB): Response<string>
+        trackEvent(eventName:string, eventValues:object, successC?:SuccessCB, errorC?:ErrorCB): Response<string>
+        setUserEmails(options:SetEmailsOptions, successC?:SuccessCB, errorC?:ErrorCB): void
+        setAdditionalData(additionalData:object, successC?:SuccessCB): void
+        getAppsFlyerUID(callback:(error:Error, uid:string)=>any): void
+        updateServerUninstallToken(token:string, successC?:SuccessCB): void
+        setCustomerUserId(userId:string, successC?:SuccessCB): void
+        stopTracking(isStopTracking:boolean, successC?:SuccessCB): void
+        setAppInviteOneLinkID(oneLinkID:string, successC?:SuccessCB): void
+        generateInviteLink(params:GenerateInviteLinkParams, successC?:SuccessCB, errorC?:ErrorCB): void
+        trackCrossPromotionImpression(appId:string, campaign:string): void
+        trackAndOpenStore(appId:string, campaign:string, params: object): void
+        setCurrencyCode(currencyCode:string, successC:SuccessCB): void
+        setDeviceTrackingDisabled(isDeviceTrackingDisabled:boolean, successC:SuccessCB): void
+
+        /**
+         * For iOS Only
+         * */
+        trackAppLaunch(): void
+        trackLocation(longitude:number, latitude:number, callback:SuccessCB): void
+
+        /**
+         * For Android Only
+         * */
+        sendDeepLinkData(callback:any): void
+        setCollectIMEI(isCollect:boolean, successC?:SuccessCB): void
+        setCollectAndroidID(isCollect:boolean, successC?:SuccessCB): void
+        /** @deprecated - please use updateServerUninstallToken **/
+        setGCMProjectNumber(gcmProjectNumber:any, successC?:SuccessCB, errorC?:ErrorCB): void
+        /** @deprecated - please use updateServerUninstallToken **/
+        enableUninstallTracking(gcmProjectNumber:any, successC?:SuccessCB): void
+    };
+
+    export default appsFlyer;
+}