Calculator with History Tape

I have been using this calculator app for several years, really love it. It has a back delete button to erase just one number and not the whole thing. No ads, comfortable and easy to use, has a history, many options available, very intuitive. Congratulations to the developers. Update: Has been my favorite calculator. Exactly what I needed. I’ve used many different calculator apps and this one is absolutely the best. I can change the button size and the font size, love the customizable options, beautiful interface, I love the way it has a history, allowing me to see any possible errors, I can see everything I calculate. I use this calculator almost every day, it has everything I need! Update: Have used the app for 4 years, on my iPhone and my iPad, works great, practical and easy to use and no advertisements popping up. This app helps me a lot, it’s like the best thing ever. Again just the Best calculator. Thanks for making the app.

While I’m inexperienced with calculator apps, this one has me amazed. All of the options would be incredibly helpful for people who do more complicated math or need to look back at old equations to keep track of new ones. I’m using it for a Business Math class, and I’m reeling at the abilities! I don’t need to keep my paper next to me in order to keep track of answers I need, because it saves it for me right then and there. This should be the base calculator app that Apple iPhones come with instead of the one it has. This is brilliant!

With no documentation and no other means of contacting the developer for guidance, I was forced to initially post a negative review in the hopes of getting some feedback as to how some of the features were supposed to work. After reading the developer’s subsequent feedback, I at least now know what the “diskette” and “folder” icons are supposed to do (see developer’s response — spoiler alert: tapping the “folder” icon will create an archive of all of the calculations that were on the screen, and the blank input screen you see is simply for entering the title you want to give that archive.) So, all in all, except for a few quirks (eg. adding a title to an individual calculation inserts it below the calculation instead of above?), it really is a pretty useful calculator. Now, if only there was a way to paste in values or expressions, or go back and edit a calculation you previously entered, that would be really helpful.