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  • #: 15197
  • Price: $2.99 In Apple Store
  • Category: Education
  • Updated: 2016-12-22
  • Current Version: 1.5.0
  • 1.5.0
  • Size: 1.00 MB
  • Language: English
  • Seller: Motonari Hibi
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.1.3 or later
  • © motonari hibi
  •  Add to Favorite apps



LadderTouch is an application to learn the basics of ladder logic, which is a graphical programming language.

This app has three functions.

You can learn about that mechanism by executing some of the prepared samples.

You can check your understanding with questions.

In addition, you can create and execute your own circuit.

Ladder functions of the timer, counter, and logical inverse are provided.

The user interface is designed to be easy to operate. The lines are written by tracing the screen. You can set an element by tapping a cell at which you want to add it.



Up to 5 elements.

You can control the input signal by tapping the buttons at the bottom of the display.

Virtual output(red)

Up to 5 elements.

Internal memory(gray)

Up to 20 elements.

Virtual output(red) and internal memory(gray) are the same for logical behavior.

But the difference is in usage.

The virtual output is the last element in the ladder logic chain.

The Internal memory is for the processing element of the ladder logic chain.

These are an imitation of the actual ladder logic with the output devices.


Up to 5 elements.

The timer can be set from 0.1 seconds to 10.0 seconds. The setting unit is 0.1 second.

The timer works only 'on delay'. This app does not include 'off delay'.

On Delay.

-++++++++++ source

-++++++ destination

Off Delay.

+++ source

++++++++- destination



Time flows from left to right


Up to 5 elements.

You can set from 1 to 50.

There is no counter reset element in this app. Many other ladder logic software has it.

The way to reset the counter is to stop running the ladder.

All elements can be inverse in the source area.

However, timers and counters cannot do it in the destination area.

It is difficult to understand the inverse logic of a timer and counter in the destination area.


You can edit ladders only with the paid version.

How to write elements or lines

Select the pencil icon.

To add an element: Tap where you want to set the element and select the element.

To draw a line: Draw where you want to write a line.

How to delete elements or lines

Select the eraser icon.

Tap where you want to delete the element.

How to scroll

Select the scroll icon, then you can scroll.

How to remove useless spaces

Select the order icon.

Tap order icon to remove useless spaces.

Line color

Green with complete ladder logic.

Red with something wrong.


There is no function that connects to outer devices.

What's New in Version 1.5.0

for iPad.

I have made two specifications of input buttons.
- Switch with touch.
- ON when touching.

Design change.

Requires iOS 8 or later

View iPhone screenshots | View iPad screenshots

iPhone Screenshots

LadderTouch iPhone Screenshot 1
LadderTouch iPhone Screenshot 2
LadderTouch iPhone Screenshot 3
LadderTouch iPhone Screenshot 4
LadderTouch iPhone Screenshot 5

iPad Screenshots

LadderTouch iPad Screenshot 1
LadderTouch iPad Screenshot 2
LadderTouch iPad Screenshot 3
LadderTouch iPad Screenshot 4
LadderTouch iPad Screenshot 5

Video Reviews

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Customer reviews

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Rated 4/5 based on 1 customer reviews.


4/5 stars


This is really cool , but 1 thing I do not like is that there are no RES so you are unable to reset counters unless you start over and with there being so little of them it seems that you should be able to reset them without having to start over every time. I'm am a PLC programmer myself and this is ah really nice app for basic understanding so I give it four stars for that and the fifth can be earned if you all ever decide to make some RES circles to reset the counters. Over all it's on the boarder of not being worth the price you have to pay maybe a dollar less but if the problem with the counters is fixed then it would be a five star app and worth a dollar more. Just my thoughts on the matter. So go ahead and buy it's nice.


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The information may be outdated (2017-03-06 17:12:20). For actual information go to iTunes

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