Though texting is more ubiquitous and more effective once done correctly, a push note is generally free and can be a perfect fit for churches just getting started and want to reduce costs. If that church is able to motivate users to download the app, then this is a really a good cost saver. The cost is included in the cost of the mobile app plan.
Push notifications can replace broadcast emails. Some studies show that 87% of emails sent by churches and ministries do not get opened. These notifications have a 50% open rate. These numbers show that using push notifications through a mobile app is an effective way to engage with your audience. You can reach people on the devices that they already carry, without the need to collect contact information.