Slide Rule

★★★★★ I still like it. The latest update is still easy to read, it still operates smoothly, and it's still a great way to learn or review the classic way to do calculations. I haven't seen any ads. The help screens are among the best I've ever seen (and I don't say that casually--I write help for a living and have judged international competitions for user assistance). I don't use this app very frequently, but it's one of my favorite apps to show off. This app is a must for anyone trying to create a steampunk droid. Calculating on a slide rule isn't just an old, obsolete curiosity. By showing the relationships between numbers, it's easier to spot egregious errors in calculations. You're forced to think about precision and error propagation. Slide rules also promote an understanding of logarithms.

★★★★★ Amazing Learning to use this slide rule properly will teach you more about the fundamentals of mathematics than any clasroom.

★★★★★ Fun While this is a great app, the slide rule in general has no use today whatsoever. People are suggesting that kids be taught how to use this like in the past but that's ridiculous. It was once necessary but given that we have calculators and smartphones, it's totally useless, especially since it isn't accurate. As a math teacher, I'll be happy when students understand basic math. There's no time for nonessentials.

★★☆☆☆ Keep your update! To me, a slide rule fits Obi-wan's description of a light saber - "an elegant weapon"! However, while I'm sure that some of the latest changes are improvements, I haven't updated. Based on comments and Play Store images, the authentic, nostalgic look has been replaced by a remedial educational toy. It may be easier to use (hell, I've got RealCalc for that!), but the nostalgic coolness factor is gone. Bring back the former graphics for *****! UPDATE: Now that earlier version has been disabled, uninstalled!

★★☆☆☆ You ruined it. The June 9 "update" turns a great professional grade N600ES app into a toy. Unrealistic graphics,unreadable font, condescending "help". Don't call this an "update"; launch it as a new app. I choose the old one. Now get this version off my "update" list.

★★☆☆☆ New version sucks Was disappointed when I updated and found that this formerly beautiful looking app has been replaced with a crappy cartoonish looking slide rule with ads at the bottom. Un-installing it now. I bought this app for nostalgia, which is mostly gone now.