Slide Rule

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.

Very nice, very convenient, very usable app. I use a slide regularly for quick computations. For endless decimal point precision I'll still resort to a calculator. However for basic math, trig, and geometric calculations I'll have the solution in hand with sufficient real-world accuracy where I'd otherwise still be pushing buttons. For learning basic math skills the number line and the sliderule are indispensable tools, though some alleged math teachers would have us believe otherwise.

This is good for math enthusiasts. I do think that, if used well, they can be a great teaching tool. They also give an idea of realistic levels of precision. Depending on the size of the side rule, it can be accurate up to about 3 significant digits, which is close to most real world needs.

It's a bit like a trip to a museum nowadays. Perhaps the only way to keep the idea of slide rules available to youngsters is to emulate it via software like this one. Thanks a lot, I really like it!!!

2010126-Tu., checking this out.

Good tutorials. Smooth scrolling and fine adjustment option. A good application now that slide rules are difficult to find. The scales seem to be a bit offset during some calculations, but 5 nevertheless

I liked the maths

As above + uninstalled. Simple ruler.rule is what i wanted

I can't adjust it every time I touch it it just moves to the other extreme end.

Bug-free and brilliant

Its accurate and fun

Very nice representation; well done!

Nice...

Great for mathematics

Awesome

Not bad

There is something perverse about using the substantial computing power of a modern smart phone to emulate a device which is essentially a couple of sticks with printed faces. There is also something elegant about a slide rule that's just lost with a modern calculator. This app can't replace the tactile experience of a slide rule, but it can at least teach the basics of slide rule usage.

Try 75*26. The answer is 1950, but the scales read a bit more than 1950. If you do 1950/26 it's not quite 75. Seems to be a rounding error in the rendering of the marks.

But I give you credit for making a cool app.

Cool

Great for mathematics

It is fun to play with and use to check calculations.

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.

Abominable since "upgrade". Was awesome.

Old slide rule better

Now it's just annoying.

Disapointed, I lost something good. I paid for the previous version to avoid adverts, now I have adverts that obscure bottom part of rule and threaten to launch if I'm not very careful. Cannot let the kids play with it now.

Used to be great. Now it isn't.

Was a great app now sucks. Uninstalled.

Bring Back Old Graphics

As a collector and user of slide rules this is the perfect app, the juxtapostion of the vintage Pickett N-600-ES with the state of the art android smartphone is superb.

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.

Glad I'm set up for manual updates. I'll keep the old graphics, thanks. Can't see anyone complaining after 40 years,tho.

Exactly what it says it is - simple and elegant. Any chance we could see additional models as a selectable option (N3/N4 for instance)?

THERE ARE NO ADS and NO CARTOONs If you want to understand how a slide rule works, this app, using animation and some text, will show you. But, at it's best, a slide rule has only one digit of accuracy. The remaining digits are powers of ten. In other words, the slide rule supported the math to get a man on the moon. But now, like morse code, there is no practical reason to use it. Paul Bergsman, N3PSO..

Just wish it could zoom a bit, other than that this app rocks!

It' so smooth. Very well done. For many it will be little more than a curiosity. For some of us who used a slide rule in our work, it is a reminder of things past.

Very nice & clear tutorial

I'm not familiar with slide rules but this apps seems to go over how to read it, just wish there was more detail on reading it

Best I have encountered to date, free or paid.