We are planning to develop the push notification service for a telecom operator. But I haven\'t got any information whether the APNS push service is free of cost or should w
Plz refer the following
APNS is a free service. However, you need to maintain a server to send Push Messages.
Apple Local and Push Notification Programming Guide
There are many online servers which provide you free push services [for limited pushes/users/devices]. They do have plans depending upon the needs of client. Following are the few ones:
a. Parse Parse not available anymore. It is now acquired by Facebook. Read More Here
b. PushWizard
c. Xtify
d. SetUp your own push server - this tutroial comprise of complete end to end steps of how to send push messages to iOS Devices.
Hope this helps !!!