There are obvious benefits to having a church app. Ministries can benefit from improved engagement if their church app is done well. When church members are able to stay better connected, communities can thrive. The statistics tell us that people spend three times longer on apps than mobile websites. Your church can and will benefit from a church app that provides tools to increase community, give, watch sermons, and share prayer requests.
The phrase "closing the back door" is often used when addressing how to prevent members from leaving a church, but I think a better phrase is "leave no one behind." For many people who stop attending church, it's simply a matter of falling out of the habit. When someone from the church actively reaches out and invites the member to come back, that person is often more receptive and willing to return.
Changing churches is never easy. For those who are very connected through volunteering, children's ministry, and other aspects of church community, change is rarely sought after. Many people feel called away from their current church for a number of different reasons. Moving to a new state or city is one obvious situation, but there are a slew of other reasons why people leave their church and join another, or quit church altogether.
What leads up to this point is perhaps, a can of worms to be opened.
How does your church leadership respond to criticism? This is a great topic of conversation for your next church staff meeting. I'm sure every pastor and person on the church staff has been criticized at one time or another; it's what you do with the outcome that matters.