Infinirule Virtual Slide Rule

I've never learned how to use slide rule before. Though I was taught how to read the scale at school, but it was only theoretically and not using any real device. Until I found this app. Really fascinating.

I collect slide rules as a hobby. They're interesting to me as an engineer, just realizing how much easier it is to do engineering work than it used to be. This app allows me to play around with slide rules without having to take anything in my collection along with me. If you like slide rules, download this app!

Loved it, but would like to see more scales and a zoom capability (in multiples of 10) for greater accuracy. It's virtual, so there is no reason not to be able to expand it to a length of one kilometer, 10 kilometers, etc., thereby gaining an additional decimal point for each multiple of 10 in length.

What amazing tool! Do you intend to go developing it? Thank you for this digital version of such smart "ancient" analogical calculators.

Its very easy to manipulate the wrong part of the screen and erase the calculation you're trying to achieve but it works just fine.

Great for practice

I was given a circular slide rule as a kid and this has the same feel. Good fun though. π squared was tricky. thanks for sharing this.

Being able to have A, B, CI, C and D scales at the same time would have been useful. As it is, it's like the top half of a slide rule, and there's lots of empty space.

Great slide rule and really helpful builtin help. I've never seen one for real so thanks for the chance to experience it in this app :)

Just one question: why not updates? This is an amazing tool! Please, answer my question: do you intend to keep developing it? Thank you for this digital version of these great "ancient" analogical calculators .

Cursor does not behave as expected.

Just one question: why not updates? This is an amazing tool! Please, answer my question: do you intend to keep developing it?

Upgraded review from 4 to 5. Built-in help is helpful!

No zoom or precision controls. Only two scales. Lack of ads and small download size do not make up for lack of features.

Just one question: why not updates? This is an amazing tool!

It's clear Infinirule was developed to be a serious computational tool and not a toy, unlike most other slide rule apps. Expect to be frustrated until you learn these controls, but once you get the hang of it, this thing really is powerful. It will be as accurate as you want it to be, from quick-and-dirty to five or more significant digits. I docked 1 star because the menu that pops up if your finger rests on the screen too long while making a fine adjustment is really annoying. If that could be turned off, this would easily rate 5 stars. If you need to be sure you're getting correct answers and you want to have more fun than stabbing buttons on a calculator, this is the best slide rule app out there.

No zoom or precision controls. Only two scales. Lack of ads and small download size do not make up for lack of features.

Há anos espero algum modo inteligente de aprender os princípios por trás da régua de cálculo. Esse app cumpre o papel com maestria e sem a chatice de se carregar régua de cálculo para todo lugar. Obviamente não pretendo usá-la como substituto da calculadora, mas por mim valeu cada segundo gasto.

Thanks

For instance if you are trying to carefully place a scale by touching and sloooooly moving it, a popup comes up giving you a tip. Which is OK but it stops you being able to position the scale. So you have to clear the popup and try again. Also to zoom you must put both fingers on the same scale. Then once it's zoomed you have to slide the rule over to fine the X scale to read your result. Don't touch the slide scale or you will mess it up. Something like a sub window showing your result would be useful there. The selection of scales is confusing and doesn't seem to always conform to the usual scale naming convention. Give me normal log-log duplex scale names. Of course this isn't a particularly useful app - it's more a curiosity at this point. But it *could* be useful if it was just a bit more functional. I can see a sliderule all that displays results digitally for your analog sliding. That would be fun and useful, allowing you to explore a range of results for a particular operation and input range. In other words instead of a sliderule emulator, take the good parts of a sliderule and combine them with the computing power in your hand.

...for most part. Wrote developer as zoom in/out does not work on my Galaxy Note 2. Took a little time getting used to circular type fxn & remembering this is NOT regular slide rule. Otherwise OK. Good effort. Would like to see an actual circular slide rule, tho prob difficult on phone. More for tablet (simply due to size constrictions).

This is the best implementation of a slide ruler I have ever seen. Truly flexible and precise.

Very well designed. If only I could remember how to use a slide rule! Well - I don't have to - a guide is included!

I love this app. Laurence has created a virtual slide rule that is better than what I even imagined a virtual slide rule should be. I bought a circular slide rule on ebay because I like them so much. (Yes, I am an engineer). This app captures the essential nature of a circular slide rule, then takes it to a new level that is impossible in the physical world. Just a few suggestions: (1) Place constant landmarks on the scale, like pi. (2) Highlight certain frequently used numbers, like 1 (makes it easier to do division). (2.1) If you've ever seen an E6B (circular slide rule specialized for pilots), on the lower scale the 60 and, to a lesser extent, 36, are highlighted as they are used frequently. Then, on the lower scale (often the result of a time computation in minutes) under the 70 is the start of a new scale that reads 1:10 (70 min is 1 hour 10 minutes). (3) Allow the display to flip over depending on how the screen is held. These are really small things. I love the app just as it is. Laurence, in your own way you are making the world a better place. Thank you. KR

Awww, so small and functional. Allows for tweak adjustment too. My favourite calculator for Android!