Have you ever experience Push Notification Delay, missing something important. Here is the tool for fixing the issue which is caused by the improper default GCM heartbeat interval time.
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The root cause
The detailed discussion of this issue can be found at https://productforums.google.com/forum/#!msg/nexus/fslYqYrULto/lU2D3Qe1mugJ
How does this application fix this issue?
Basically this application allows you to configure the interval of GCM heartbeat, keeping the connection alive, and improving the reception of notifications.
Will this application consume too much power?
According to my test, the battery should not be much impacted over a day.
If you have problems or questions, please send me an email(email@example.com) instead of REPORT BUG AS REVIEW
This applications is open source and you can find the source code @GitHub here: https://github.com/shaobin0604/HeartbeatFixerForGCM
You can donate money to support the development via Google Play in-app Billing.