diff --git a/Sources/NTPClient.swift b/Sources/NTPClient.swift
index e340749..94ea71a 100644
--- a/Sources/NTPClient.swift
+++ b/Sources/NTPClient.swift
@@ -92,6 +92,7 @@ final class NTPClient {
     private var pool: [String] = [] {
         didSet { invalidate() }
     }
+    var isStarted: Bool { return self.reachability.callback != nil }
 }
 
 private extension NTPClient {
diff --git a/Sources/TrueTime.swift b/Sources/TrueTime.swift
index a588a4e..a76f43c 100644
--- a/Sources/TrueTime.swift
+++ b/Sources/TrueTime.swift
@@ -92,6 +92,7 @@ public typealias LogCallback = (String) -> Void
     @objc public var maxConnections: Int { return config.maxConnections }
     @objc public var maxServers: Int { return config.maxServers}
     @objc public var numberOfSamples: Int { return config.numberOfSamples}
+    @objc public var isStarted: Bool { return ntp.isStarted }
 
     private let config: NTPConfig
     private let ntp: NTPClient