I mean, I just guess that if people weren't using the app, they would uninstall it eventually? I've had a retention rate of 60% which I thought was pretty good and made the think that people actually use the app.
That being said, I completely understand the trust issue you mention. It's even worse for the online version of the same service, iamproxy.com
Do you have a suggestion how I can improve the trust?
I'm serious. I'm not a mobile app publisher, I don't know anything about app discovery through the Play store, but I have experienced the paradox of increasing sales by increasing prices in other channels.
I'm not super up on the psychology at play, but I've read it's because people use price as a proxy for quality/utility in uncertain markets.
And honestly, if you look at the app, a higher price would feel like a ripoff.
But what value would you assign to "being able to check Kibana on AWS from the phone"?