WhatsApp is highly price-competitive with the native offerings, particularly in the markets where it is most popular. It also benefits from wide cross platform

WhatsApp is highly price-competitive with the native offerings, particularly in the markets where it is most popular. It also benefits from wide cross platform and cross network availability. While the UI for Talko might be slick, there are already very similar and competitive offerings to Talko that operate on multiple platforms (e.g. Voxer) that have failed to take any market share the way Talko apparently hopes to. If they're going to be successful, it will boil down to marketing more than anything.