Slide Rule

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I should have read the entire description more closely. The description says the slide rule is used for multiplication, division, roots, logs and trig functions. I downloaded it and couldn't find the log and trig stuff. My old slide rule flipped over to reveal a second set of scales. I slid the slide out and tried all the iPhone tricks to flip it to get to other scales. The link on the information page (which also mentions trig functions and logs) goes to a Japanese language site. Worthless for anyone who doesn't read Japanese. It wasn't until I re-read the last sentence of the description that I saw that log and trig functions are not included on this slide ruler. Why mention them, then, in the application information? Other than that, the application works as described.

I'm a 20-something engineer, and each year during Engineering Week, my workplace holds a slide rule competition to see who in the office can solve math problems using a slide rule. I like learning useless skills, so I decided to learn how to use a slide rule so I could compete. I found this app last year and it was awesome! It's also a good way to introduce the younger generation to this out-of-date math tool. The only problem I have with this app is that it doesn't include a trig scales or the log scale. Not only would adding those scales improve the quality of the app, but it will also allow me to use the app in the competition (because it always includes trig and log problems). -Jason

I was just thinking to myself "A slide rule. That would make a fun app." Then, I went to the next "recent apps" page and lo and behold - there's a slide rule!. The app seems to work well enough. I even managed to fling the slide out one end. Maybe a bit too much oil? Anyway, this was worth a buck just for the irony of using then unimagined technology to do 2 x 5 = 10 on a slipstick simulation. edit: Notes, and suggestions: Gets stuck in cropped vertical on launch, sometimes. Only works in one landscape orientation. Smoother animation. Slide moves, slightly, when removing finger.

Agree with PriRmentndo. Great novelty app. Sort of ironic to have a slide rule on an iPhone. Similar to the Rotary Dialer app ... regarding the irony that is. This app is also pretty cool in that it is a good tool for honing one's skills in the use of a slide rule ... again for novelty sake. Would be nice to have an Instruction Page too. Would also be cool to allow the user to zoom in so as to make it easier to read between graduations, etc.

I don't write many reviews, but this app really hits the spot for it's accurate rendition of an elegant device that got us to the moon. When a younger co-worker revealed that he had never seen a slide rule, I pulled out my iPhone to Google it and show him. As I did so, it hit me that this would make for a perfect app, and if there wasn't one, I would have to make one. Well, sure enough, this app recreates that device as I would have, but probably even better. Thanks for taking me back to my junior year in high school when we made the abrupt transition in two of my classes from slide rule the first semester to calculators the next. Well done!