All the data shown in a H-DAM app is stored in our cloud Data-vault.
H-DAM apps are true "native" so a copy is also stored on the user's device (and the app works without a phone or internet connection) but each installed app updates itself to the Data-vault, when it is in a reception area. Only changed data is transferred.
As the app owner can access the Data-vault directly and make your own text and image changes that go live immediately at the vault.
So even an app based on a large and complex data set can be kept up-to-the minute correct, at low cost and under your direct control.