This is a review I have posted on the iPhone App Store:
Here-to-fore, my favorite RPN iPhone app has been the HP 42s (which I rate 4 *'s). Though it's an amazing replica of the original, the project is focused on recreating the 42s, as opposed to pushing forward. Though superbly engineered, it was done at a time when dynamic reconfigurability of the keyboard/functionality was limited. In contrast, the ND1 is easily reconfigured. Currently, I am taking a Chemistry course, so I wanted a 42s type calculator that has physical constants built-in. I was easily able to reconfigure the ND1 to do so. Moreover, for my day job, I wanted to include a core-set of financial functions, which I was also able to easily add.
As impressed as I am with ND1 in its current incarnation, I believe the best is yet to come. I believe that the developers of ND1 will continue to focus on configurability and expandability.
Lest you feel intimidated by all of the power of the ND1, don't be. As I mentioned, it is ready to go right out of the box, but it's nice to know if one wants to make "tweaks" that these can be easily accomplished.
Here is a screenshot of how my 42s++ looks:
- ND1.PNG (109.22 KiB) Viewed 42999 times