The device came out about a year ago: https://www.notebookcheck.net/The-HMD-Touch-4G-is-an-all-scr...
It looks like it's still India-exclusive. I haven't heard much about it online, and with a dedicated chat app I would've expected to if it was a success. Did it bomb?
A dedicated app that's only compatible with itself and only have miniscule install count means nothing. I tried downloading it and it only even support 4 countries prefix at the moment. It's also not that cheaper compared to "proper" smartphone from other brands in that area. Notebookcheck says it's launched with 3999 rupees while I see Itel Zeno 10 is just 4769 rupees. With India's unskilled labor minimum monthly wage about 20000 rupees I don't think anyone would care about the price difference.
Reminds me of the myriad of secure encrypted apps that are available.
Problem is, unless you have people willing to jump ship, or technical friends who like to experiment. You're just chatting to yourself