Dent has over a million downloads on google play store now which is a relatively high number already for a blockchain project. But the thing to consider is that the market is much bigger. Maybe when at least 10% of the market have adopted, the volume of transactions might become even higher compared to the current volume on exchanges.
Don't consider only downloads some people won't use them after downloading but with active users, we may expect some huge growth in the market. So always try to get updates from the team about their progress.