Pricey and confusing to buy and use. Conflicting information from the developers does not help. I located a review complaining about the price and reply from the dev.co saying that the price was now "about $15 for lifetime" dated 1/1/22. I tried to buy it for $15 on 2/13/22 and was informed "that was an old price" and now they want $39/yr. I replied that, "A huge price jump from $15 lifetime to $40/yr less than 2 months ago and you will not extend the prior price to me after I found your promise of that price in feedback to another customer, to gain a new customer? Not good businessthink." I do not have any idea if the app works because I can't get past the ads to figure it out. But I do know that my Note9 failed every one of the source tests in their phone compatibility testing applet. I thought the applet was a slick feature. Cube doesn't have that, but at least Cube does record some of my callers voices when not on Bluetooth (apparently google has blocked android recording of Bluetooth for some reason).