What we'd like you to test
1. Map: pan and zoom around London. Any stutters or flickering pins?
2. Flights: one pin per terminal per hour. Counts and times right?
3. Next 4 hours: is anything missing?
4. New places (hotels, pubs, hospitals): check light and dark mode.
5. Filters: do red counts match the map?
6. Settings > Distance Unit: miles or km everywhere?
7. Ferro button: only hotspots ~10 min away.
8. Saved spots: alert ~10 min before opening.
9. Alerts: max 5 a day, 45 min apart.