I love everything about this app. I’ve been using it for years now. The recent update (9.7) had a bug in it which prevented some phones from updating. I emailed the developer. I got an immediate response back from the developer even though it was on a weekend. They were already on it and even emailed me back again to let me know that another update was now available to fix the bug in 9.7. The developer is as awesome as their app. 5 stars!

This colorful calculator has been my mainstay for years now ... I'd be lost without it! I especially love the "paper tape" feature and the ability to erase the tape at any time, but never accidentally. Even though I keep the sound off for almost all apps, this one allows you to choose one of four sounds plus an option for a man's or woman's voice ... all in your preferred language! Can't think of a single thing to change – crazy about it just the way it is!

Best calculus App I have ever had it has some quirks like key click noise that you can turn off that confuses me as it’s hard to tell it’s coming from my phone and self clearing paper tape at the wrong Time just when when you think it’s safe. Things are cool and more scientific options would be nice but I like the nice simple basic all the functions you need calculator.

I found this calculator a decade ago, my prerequisites being simple, bright interface and a “running tape” total similar to an adding machine, so you can see what you’ve already entered and check your work. I’ve been happy with it all this time…if it’s not broken, don’t fix it (or try to improve it every year). It’s perfect as is!