diff --git a/Sources/Decide.swift b/Sources/Decide.swift
index 6c699086..8781a62f 100644
--- a/Sources/Decide.swift
+++ b/Sources/Decide.swift
@@ -29,6 +29,7 @@ class Decide {
             let semaphore = DispatchSemaphore(value: 0)
             decideRequest.sendRequest(distinctId: distinctId, token: token) { [weak self] decideResult in
                 guard let self = self else {
+                    semaphore.signal()
                     return
                 }
                 guard let result = decideResult else {
diff --git a/Sources/Mixpanel.swift b/Sources/Mixpanel.swift
index d5d80e00..377b99ef 100644
--- a/Sources/Mixpanel.swift
+++ b/Sources/Mixpanel.swift
@@ -46,6 +46,9 @@ open class Mixpanel {
                                useUniqueDistinctId: Bool = false,
                                superProperties: Properties? = nil,
                                serverURL: String? = nil) -> MixpanelInstance {
+        #if DEBUG
+        didDebugInit(distinctId: apiToken)
+        #endif
         return MixpanelManager.sharedInstance.initialize(token: apiToken,
                                                          flushInterval: flushInterval,
                                                          instanceName: ((instanceName != nil) ? instanceName! : apiToken),
@@ -86,6 +89,9 @@ open class Mixpanel {
                                useUniqueDistinctId: Bool = false,
                                superProperties: Properties? = nil,
                                serverURL: String? = nil) -> MixpanelInstance {
+        #if DEBUG
+        didDebugInit(distinctId: apiToken)
+        #endif
         return MixpanelManager.sharedInstance.initialize(token: apiToken,
                                                          flushInterval: flushInterval,
                                                          instanceName: ((instanceName != nil) ? instanceName! : apiToken),
@@ -141,6 +147,32 @@ open class Mixpanel {
     open class func removeInstance(name: String) {
         MixpanelManager.sharedInstance.removeInstance(name: name)
     }
+    
+    private class func didDebugInit(distinctId: String) {
+        let debugInitCountKey = "MPDebugInitCountKey"
+        let debugInitCount = UserDefaults.standard.integer(forKey: debugInitCountKey) + 1
+        if debugInitCount == 1 {
+            Network.sendHttpEvent(eventName: "First SDK Debug Launch", apiToken: "metrics-1", distinctId: distinctId) { (_) in }
+        }
+        checkForSurvey(distinctId: distinctId, debugInitCount: debugInitCount)
+        UserDefaults.standard.set(debugInitCount, forKey: debugInitCountKey)
+        UserDefaults.standard.synchronize()
+    }
+    
+    private class func checkForSurvey(distinctId: String, debugInitCount: Int) {
+        let surveyShownCountKey = "MPSurveyShownCountKey"
+        let surveyShownCount = UserDefaults.standard.integer(forKey: surveyShownCountKey)
+        if (debugInitCount > 10 && surveyShownCount < 1) || (debugInitCount > 20 && surveyShownCount < 2) || (debugInitCount > 30 && surveyShownCount < 3) {
+            let waveHand = UnicodeScalar(0x1f44b) ?? "*"
+            let thumbsUp = UnicodeScalar(0x1f44d) ?? "*"
+            let thumbsDown = UnicodeScalar(0x1f44e) ?? "*"
+            print("""
+                \(waveHand)\(waveHand) Zihe & Jared here, tell us about the Mixpanel developer experience! https://www.mixpanel.com/devnps \(thumbsUp)\(thumbsDown)
+                """)
+            UserDefaults.standard.set(surveyShownCount + 1, forKey: surveyShownCountKey)
+            Network.sendHttpEvent(eventName: "Dev NPS Survey Logged", apiToken: "metrics-1", distinctId: distinctId, properties: ["Survey Shown Count": surveyShownCount, "Debug Launch Count": debugInitCount]) { (_) in }
+        }
+    }
 }
 
 class MixpanelManager {
diff --git a/Sources/MixpanelInstance.swift b/Sources/MixpanelInstance.swift
index 68298851..855dd6cc 100644
--- a/Sources/MixpanelInstance.swift
+++ b/Sources/MixpanelInstance.swift
@@ -816,7 +816,7 @@ extension MixpanelInstance {
         let defaultsKey = "trackedKey"
         if !UserDefaults.standard.bool(forKey: defaultsKey) {
             trackingQueue.async { [apiToken, defaultsKey] in
-                Network.trackIntegration(apiToken: apiToken, serverURL: BasePath.DefaultMixpanelAPI) { [defaultsKey] (success) in
+                Network.sendHttpEvent(eventName: "Integration", apiToken: "85053bf24bba75239b16a601d9387e17", distinctId: apiToken) { [defaultsKey] (success) in
                     if success {
                         UserDefaults.standard.set(true, forKey: defaultsKey)
                         UserDefaults.standard.synchronize()
diff --git a/Sources/Network.swift b/Sources/Network.swift
index 75928861..ca38d925 100644
--- a/Sources/Network.swift
+++ b/Sources/Network.swift
@@ -128,13 +128,12 @@ class Network {
                         parse: parse)
     }
 
-    class func trackIntegration(apiToken: String, serverURL: String, completion: @escaping (Bool) -> Void) {
-        let requestData = JSONHandler.encodeAPIData([["event": "Integration",
-                                                      "properties": ["token": "85053bf24bba75239b16a601d9387e17",
-                                                                     "mp_lib": "swift",
-                                                                     "version": "3.0",
-                                                                     "distinct_id": apiToken,
-                                                                     "$lib_version": AutomaticProperties.libVersion()]]])
+    class func sendHttpEvent(eventName: String, apiToken: String, distinctId: String, properties: Dictionary<String, Any> = [:], completion: @escaping (Bool) -> Void) {
+        let trackProperties = properties.merging(["token": apiToken,
+                                                  "mp_lib": "swift",
+                                                  "distinct_id": distinctId,
+                                                  "$lib_version": AutomaticProperties.libVersion()]) {(current, _) in current }
+        let requestData = JSONHandler.encodeAPIData([["event": eventName, "properties": trackProperties]])
 
         let responseParser: (Data) -> Int? = { data in
             let response = String(data: data, encoding: String.Encoding.utf8)
@@ -154,14 +153,14 @@ class Network {
                                                  headers: ["Accept-Encoding": "gzip"],
                                                  parse: responseParser)
 
-            Network.apiRequest(base: serverURL,
+            Network.apiRequest(base: BasePath.DefaultMixpanelAPI,
                                resource: resource,
                                failure: { (_, _, _) in
-                                Logger.debug(message: "failed to track integration")
+                                Logger.debug(message: "failed to track \(eventName)")
                                 completion(false)
                 },
                                success: { (_, _) in
-                                Logger.debug(message: "integration tracked")
+                                Logger.debug(message: "\(eventName) tracked")
                                 completion(true)
                 }
             )