I just posted the 1.0.3 update to Apple, so it should be available within a few days. This update includes improvements in the scale numeric graphics for the P, LL/0, LL/1, LL0, LL1, LL2, and LL scales (increased kerning by 1 pixel in the smaller fonts). Also, I've adjusted the acceleration and deceleration of the slide movement when the cursor is used to move the slide and top/bottom rules to the left or right.

Additionally, I corrected a problem where the cursor would seemingly "lock" to the left side of the display when scrolling, even after the touch was lifted and the slide action should have stopped.

Another change was done to the way the non-moving touch action performed. Instead of using the current position of the opposite rule to determine which direction to move the piece in, the application now looks at the touch location. If you touch the display on the left side, on, for example, the slide, the top and bottom rule will move to the left until the rightmost index is at the farthest position to the left that it can go. Similarly, touching the display on the right will move the rule or slide (whichever piece is not being touched) to the right until the leftmost index is at the farthest position to the right that it can move.

The next update will take a bit of time to deliver as I'll be adding in several new features, including the triplex rule system, and optional digital display capability. In the mean time, I believe 1.0.3 is very stable and use-able. Please let me know if you find any issues! And thanks!