Specific versions of Google Play Services (notably 4.0 through 4.4) launched concurrently with KitKat and introduced several critical frameworks: Google Play services 4.4 - Android Developers Blog
com.google.android.gms_44.apk
If you are still using a KitKat device, maintaining this APK is critical, as it provides core functionality for Google apps, synchronised contacts, and location-based services. The Final Stable Version google play services apk android 44
Are you trying to fix a , or just trying to get a particular app to run on your KitKat device? Specific versions of Google Play Services (notably 4