Calc-12E

Calc-12E

Not just another disposable App

The drive behind Calc-12E is quite simple: To make a first quality tool for daily professional use that is a worthy replacement for the HP-12C. An app that you will keep and use, one you will be glad you spent money on. But while building a strict copy is easy (our Calculator12 was the very first HP-12C clone on the App Store), a copy is really a bit of a robbery because a copy does not deliver the new and exciting capabilities that iPhone and iPod touch make available. To remain on your iPhone, we believe Calc-12E must be significantly better than the 12C it replaced. Since August of ’08, three out of four copies remain on the customer’s phone and are kept up-to-date... the jury is in.

Making it better

Improving on a 30 year gold standard takes more than one or two skillsets. Absolutely the math has to be rock solid, that is a given. Photographing the keyboard works, but is that the best you can get out of the touchscreen? How do you pick from the myriad of “it could do this” choices when adding to the feature set? Support will have to be provided after the sale.

Knowing this, Stone Meadow Development engaged people who are acknowledged experts in their specialties to design the replacement for HP’s 12C from the ground up. The financial algorithms were written specifically for the iPhone and iPod touch–they are more accurate and three decades faster than the original and absolutely, Calc-12E gets the right answers to the “tough” problems. The interface was designed by the same group that won the Gold award from the Industrial Design Society of America’s Gold for their automated external defibrillator. Graphics were handed to a veteran game artist (they needed to be engaging!). Functionality choices are made in concert with both professional and occasional users to ensure that usability is not lost to feature creep. And customer support email goes directly to the lead programmer. This is an expensive app, you deserve excellent support.

Throughout the development process, the end game was the focus: this is a tool. Its job is to provide answers. And it can’t provide answers if people can’t use it.

A modern tool

for Business

and Finance

So prove it

As we know, Apple does not allow “try before you buy” so while we acknowledge it’s a weak alternative, we made a few videos to demonstrate features that take Calc-12E beyond the realm of original 12C. For those that are visiting on their mobile device, you will have to check the videos via the YouTube links -- or search for Calc12E in the YouTube app.

Invest mode. Compare investment scenarios side-by-side. (YouTube)

Visual Cash Flow Editing. Truly out of the dark ages. (YouTube)

Email an Amortization Schedule. Communicate your results. (YouTube)

Blisteringly fast. Redesigned math on modern hardware means no more “ ”.

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Are you a faculty member at a business school?

If so, and you are interested in evaluating Calc-12E to see if it is an acceptable tool for your students (it is!), please email to find out how we can make this happen. Our email address is on the “contact us” page. The only thing I’ll ask is that you be able to confirm that you are indeed an active faculty member—whether or not you sanction the product is entirely up to you. Because this is a limited program, not everyone will be selected to participate. Note that this app only works on iPhones and iPod touches, it does not work on PCs!

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