The left screen is what everyone gets when they tap a verse. The right screen is what they get if they tap once more. Nothing on the right is required to understand the left.
First tapThe reading page
Acts 2:42
They devoted themselves to the apostles' teaching and the fellowship, to the breaking of bread and the prayers.
"Devoted themselves" is one verb, προσκαρτεροῦντες, in a form that means they kept it up over time. It governs all four items, so this is one habit seen from four sides rather than four separate activities.
"The prayers" has the definite article. Not prayer in general, but a known set of them.
Jerusalem, within weeks of Pentecost. These are Jewish believers who still went up to the temple at the fixed hours of prayer and then ate in each other's houses. Nothing here has left the synagogue yet.
The four items are probably not a programme Luke is prescribing. He is describing what the community looked like, and the single governing verb is what makes it a portrait rather than a checklist.
Luke 24:35
The only other place this exact phrase for breaking bread appears, and Luke wrote both.
1 Corinthians 10:16
Uses the same word for fellowship, of the bread and the cup.
Acts 4:32
Shows what the fellowship actually looked like in practice.
Second tapThe map
Acts 2:42
Every verse below is also a dot above. Closer means more alike. Tap either one.
What changed. The verse text is now pinned to the top of both screens and never scrolls away. The map button says what it does. Every dot on the map is repeated as a ranked row underneath, so the spatial reading is optional rather than required. And travelling to a new verse keeps the old one on screen, marked came from, instead of wiping the canvas.