iSlideRule 4+

The issues are similar to the HD version, except that the nudge feature randomly seems to get stuck nudging in the same direction in both portrait and landscape orientation. The Display Values option is irritating on small devices, since it appears to be impossible to adjust the cursor in increments as small as the displayed precision indicates (for example, 1.201 is as close as you are going to get the cursor to 1.2 on the D scale).

The slide rule looks really good, but I could not use it as a slide rule. The main problem was that I had no easy way of moving the entire rule (with slide staying put in the rule body) across to see a number to the right. I could move the body or the slide, but not both together, at least not consistently. A minor annoyance was that, although I could choose dozens of scales, they came out in the designed order, not what I am used to. For example, I could not put the C scale at the bottom of the slide.

I have been using a Slide Rule since I was eight and I still do. I even teach classes on how to use the Slide Rule, so trust me when I say that this is THE App to get if you want to try your hand using one. The rendering of scales is precise, clear and easy to use. You can even choose the scales that you want on each of the pieces, (the top and bottom stators and the slide). There is even a descriptive help file to tell you what each scale is for and its mathematical function! Every feature to aid you in learning or practicing is there, even to allowing the cursor to show the actual numerical values that are currently under the hairline! With this feature, iSlideRule acts like an interactive Slide Rule manual because gaining the ability to accurately read the scales caused no end of students many problems in mastering this essential skill. I could go on and on about this fantastic App, but I think you get the point. Now, get the App!