An iphone app interface top right corner a small magnifying glass icon (search button). middle large, clean, user-friendly interactive map of a city, possibly with green routes marking the trails/paths. highlighted path showing details when clicked trail length, expected duration, elevation, etc. bottom four icons evenly spaced - home, explore (active, highlighted), notifications, and profile. overall aesthetic utilize a modern, clean, and streamlined design. the color theme should be using shades of blue, green, or gray. the interface should look friendly and inviting, using clear, legible fonts.