How does Partiko (plan to) make money? [Partiko 2018]

The Partiko mobile client has been around for about 8 months, developing faster then many other projects.
We have seen several interviews with the lead developer Hive account@crypto.talk and many posts have been published about Partiko, but nowhere was i able to find what the business model of Partiko is and who is paying for it.

Don't get me wrong, the client is amazing and it's great to see actual useful apps being developed for the STEEM blockchain, apps that even grandma can use.
BUT what the commercial internet has taught us is that if you are not paying for the product, then you are the product.

I'm very surprised that few ask the important questions, while everything else on the the STEEM blockchain is very open and transparent.

I hope Partiko can one day share their view on this matter.