User names are not mentioned for sake of privacy but you can find these and thousands of other reviews at Mac App Store.
Awesome app! ★★★★★
The app delivers on its promise! Useful formulas, easy-to-use interface and, most importantly, good accessibility with VoiceOver screen reader. Thank you!
Fabulous calculator ★★★★★
Calc. w. memory, scientific, loan (printing full amortization), financial, tip, currency, conversions, notes showing calculations, and MUCH more! This is the most complete calculator I have ever used. A really super app.
What more would you want? ★★★★★
The calculator has everything you need and want. The price is a steal. Best dollar I’ve spent!
Just right ★★★★★
I rarely write reviews, but this one is well deserved. This is a great app. I wasted time and a few bucks on other apps but was able to delete them all because this one nailed it.