Uno Calculator

The other ios calculators became unusable due to full screen ads you can't even close. Very happy to find this one, thanks to the developers

Found this calculator app thanks to a reddit post from others as annoyed as I am about Apple’s insane decision not to include a native calculator in iPadOS. Of course because of this developers have been lining up to sell their mostly mediocre calculators, so finding one that is truly free with no ads or subscription nags is truly a gift from the open source gods! This calculator doesn’t have a fancy skin, it’s plain and simple, and it works. It works well! It has standard and scientific modes, it has a history ribbon, it loads very fast and best of all it really is free. It has no annoying or distracting ads and it doesn’t nag you to purchase an upgrade.