Thanks for sharing, @MartinHN. This is such a difficult product to get right. From my experience, most add too much friction and don't provide significant value beyond existing, familiar solutions like txt'ing or FB events. I'll check this out though.
I have an idea for them. When you use trippy.com, they have a special feature. Whenever you type "@" then you can tag a location.
I think, the same feature would be great for this product. In this version's chat feature, i cant see any advantage to whatsapp or other messaging apps.
Defunct? No website, no android app.