Stay away
I got this a while ago because I wanted a "premium" app, meaning, not freemium, no in-apps, no upselling, no data collation on the side to make up for being free, nothing of that. It's a calculator, how frequent the formula of 2+2 gets updated? There's no need for maintenance. Right? I need it to use it again, I went through the sections to get reacquainted where I found a couple of ads, then in the main section more ads, they didn't load but might be because of mi firewall that blocks data mining, tracking, ads… I remembered back when I got it thee was another that was basically a clone of this which I also got so in the future I could differentiate them, and that's what I did; I went through my account until I found it, receipt and everything. The developer didn't care to respect their customers and just got rid of your purchase. Their not worth your time, much less money. In addition, that other clone app, it's the same dev with another name, which is shady AT BEST. Data is being collected too. They could've just cloned it again without having to block you from what you paid for, it's not like it's a foreign concept, the dev has four calculator apps between accounts with subscriptions for some by number of operations WTF. Are you doing mentally the match calculation for me or is my device doing it? It's egregious beyond belief. Just the data collection thing is a non-starter, lets alone the ads, subscriptions, and annulling your purchase by updating the app into a different thing that you purchased. Stay away.
