And since it immediately switched them to numbers-only, it's not caching, which explains why it polls so much. It's likely they didn't want any sort of delay wh

And since it immediately switched them to numbers-only, it's not caching, which explains why it polls so much. It's likely they didn't want any sort of delay when opening the app, so they found a way to poll regularly without impacting battery life significantly. Sounds pretty straightforward to me, if that's the case.