MERIDIAN

A nine-storey seafront block sold the way a sales office sells it. A live availability board of 54 apartments with filters by rooms and price; tap one and its floor plan, view and payment schedule follow you down the page. Plus the building shown from two viewpoints with interactive hotspots, a virtual tour of four rooms that unlocks a promo code, an interest-free installment calculator with a real schedule, a finishing-materials calculator, and a quote you can save as a PDF or send as a link.