# LadderTouch — graphical programming language

> Graphical programming language simulator for learning and practicing ladder logic. (iPhone/iPad app by Motonari Hibi.)

- Source: https://appshunter.io/ios/app/laddertouch/id386737169 (this page in markdown: same URL + `.md`)
- Developer: [Motonari Hibi](https://appshunter.io/developer/386737172)
- Category: Developer Tools, Productivity
- Price: $3.99
- Rating: 4.60/5 from 91 App Store ratings · 50 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.5 · 6 MB
- Languages: American English, Japanese
- Released: 2010-10-30
- Data updated: 2026-08-28
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/laddertouch/id386737169/reviews.md

## What is LadderTouch?

LadderTouch is an app 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 ladder.
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. 

---------------ELEMENTS---------------
Input(yellow)
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.

Timer(blue)
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

+ ON
- OFF
Time flows from left to right

Counter(green)
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.

---------------EDIT---------------
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.

--------------Other--------------
There is no function that connects to outer devices.

## Key features

- Learn ladder logic basics
- Execute sample programs
- Test understanding with quizzes
- Create and execute custom ladders
- Timer and counter functions
- Intuitive touch-based interface

## Chart rankings

- #60 in Top Paid · Developer Tools (US App Store)

## Recent user reviews (10 of 50)

All indexed reviews: https://appshunter.io/ios/app/laddertouch/id386737169/reviews.md

### 1/5 — One star

*2026-03-26, version 2.1.5*

For calling Twitter “X”

### 2/5 — 物足りない

*2026-02-28, version 2.1.4*

入力が5個しかないのでできる事が少ない。
フリッカー回路とかも組みづらい
三菱シーケンサーGX worksの感覚で遊べたらよかったなと思いました。

### 3/5 — 手が届きそうで届かないアプリ

*2025-12-20, version 2.1.3*

書いてる時はどんなイメージかわかってるからいいけど、見返すと何か覚えてなくてメモ機能が欲しい。あとタイマーとカウントをリセットする方法が存在しなくて、これだけじゃ完結できないのは問題だと思う。実際にどう動くか視覚的にわかるのはいいけど、紙に手書きで書いた方がまだ良かったんじゃないかと思う。自分のpcを持ってるなら不要

### 1/5 — Don’t buy it

*2025-11-15, version 2.1.3*

Some training puzzle are inoperable, don’t have an answer will piss you off as you’ll spend 30min-1hr trying to figure it out asking multiple people and there is no answer seems somethings wrong as trying to save your creations doesn’t work and gets rid of it.

### 5/5 — さいこう！

*2025-10-06, version 2.1.3*

使いやすいしわかりやすい

### 5/5 — ¡Genial!

*2025-06-02, version 2.1.2*

Es una excelente manera de aprender la lógica de los PLC. Sería ideal que se incluyan nombres en los proyectos que realizamos, en lugar de que aparezcan solo como Notebook1, Notebook2. Además, sería útil añadir más funciones.

### 3/5 — 惜しい

*2025-02-11, version 2.1.0*

シミュレーションにいいかも！と思ったが、入出力の点数が少し少なかった。改善に期待します

### 1/5 — Great concept

*2024-12-31, version 2.1.0*

Difficult to use, not sure if this is AB concept as I’m use to GX

### 5/5 — 勉強になります！

*2024-07-19, version 2.1.0*

すごく勉強になります！
もっとものすごく難しいものや問題数を大幅に増やして欲しいです！お願いします！

### 1/5 — Little more directions

*2024-05-13, version 2.1.0*

I am not the smartest however, I am not the dumbest either. There are a bunch of details left out. Who knows what mode I am in, notebook mode can I use more than 1 button? If not why not?

## Frequently asked questions about LadderTouch

### What is LadderTouch?

LadderTouch is an application designed to teach the fundamentals of ladder logic, a graphical programming language commonly used in industrial automation. It allows users to learn through samples, test their knowledge, and create their own ladder logic programs.

### What are the key features of LadderTouch?

Key features include learning through prepared samples, quizzes to check understanding, the ability to create and execute custom ladder logic, and the inclusion of timer, counter, and logical inverse functions. The app also boasts an easy-to-use touch interface for drawing and placing elements.

### Is LadderTouch free to use?

The core functionality of LadderTouch is available for free. However, the ability to edit and create your own ladders is restricted to the paid version of the app.

### What devices is LadderTouch compatible with?

LadderTouch is a mobile application, designed for use on smartphones and tablets. The description does not specify exact operating system requirements (e.g., Android or iOS), but it is intended for mobile devices.

### What are common use cases for LadderTouch?

Common use cases include students learning the basics of ladder logic for industrial automation courses, engineers practicing PLC programming concepts, and hobbyists experimenting with graphical programming languages in a simulated environment.

## Version history (last 5 releases)

### 2.1.5 — 2026-03-04

Supports iPad's compact window.

### 2.1.4 — 2026-01-12

Build in a new environment

### 2.1.3 — 2025-07-14

Organizing the internal structure

### 2.1.2 — 2025-05-08

Rebuilt the foundation from scratch.
Added an English vocabulary app using AppleIntelligence to the “Other Apps” section.
Reduced app size.

### 2.1.1 — 2025-05-05

I have changed the way the app monitors the network to a new method.
It uses network monitoring in review requests and other applications introduction page.

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## More apps by Motonari Hibi

- [LadderTouchLite](https://appshunter.io/ios/app/laddertouchlite/id405695274)
- [FindSpeedAnimation](https://appshunter.io/ios/app/findspeedanimation/id504162124)
- [SilentBonusTrack](https://appshunter.io/ios/app/silentbonustrack/id725815269)
- [SilentBonusTrackLite](https://appshunter.io/ios/app/silentbonustracklite/id796302146)
- [NumericTadpole](https://appshunter.io/ios/app/numerictadpole/id972559163)

All apps by Motonari Hibi: https://appshunter.io/developer/386737172

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*