Because it's a headache and hassle that's not worth it. Using a saas service is not a large expense and frees up time and mindshare to focus on things I can add

Because it's a headache and hassle that's not worth it. Using a saas service is not a large expense and frees up time and mindshare to focus on things I can add value to. Best case scenario you have to: 1. Worry about Apple AND Google push notification infrastructure 2. Manage device tokens 3. Forever add one more cron to your life to manage device token invalidation requests for Apple (Is there something similar for Google? I dunno) 4. Gotta keep your certs/keys updated Yes, you can work around all that stuff. Of course you can, people are doing this after all. But an even better option to me is to spend a small sum and let somebody else worry about these boilerplate systems.