I use it to get a quick overview of what I can do in a new destination since I'm not big into research before my trips. TicketLens also compares more providers at once so my chance is higher to get into an attraction last minute since I don't really prebook anything.
Great product for anyone trying to get an overview over paid activities in cities you travel to. Currently there are so many different platforms out there that it gets hard to make a choice and Ticketlens helps make choices a lot easier!
I used it in Vienna, Singapur, London and New York multiple times and the purchase of the tickets was easy and fast and most of the time I just showed the online ticket at the entrance - so I needed no paper :-)