# ioTouch2 Lite — For I/O checking of PLC > iPhone/iPod touch app for monitoring and manipulating PLC devices via Wi-Fi. (iPhone/iPad app by ITO SOFT DESIGN Inc..) - Source: https://appshunter.io/ios/app/iotouch2-lite/id427947924 (this page in markdown: same URL + `.md`) - Developer: [ITO SOFT DESIGN Inc.](https://appshunter.io/developer/311313017) - Category: Productivity, Business - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 13.0 · 5 MB - Languages: American English, Japanese - Released: 2011-05-18 - Data updated: 2026-07-02 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/iotouch2-lite/id427947924/reviews.md ## What is ioTouch2 Lite? 'ioTouch2 Lite' is a Lite edition of 'ioTouch2'. "ioTouch2" is an iPhone/iPod touch application which enables you to monitor and manipulate PLC(Programmable Logic Controller*1) devices easily, without the expert knowledge. *1 PLC - A digital computer used for control of machinery on factory assembly lines, etc. = The difference from 'ioTouch2 Pro' 'ioTouch2 Lite' has a restriction time (30 min. in a day) to communicate with real plc. There are Add-on items for each PLC provider. If you bought an item, it can connect to your selected provider's PLCs. More details to see http://iphone.itosoft.com/iotouch2/diff_pro_lite = What It Changes In general, there must be at least 2 people for checking I/O at the startup of a device; one for switch-on, another for monitoring. With ioTouch, you can do this by yourself, because you can monitor the device's change at the same time you are switching it, with iPhone/iPod touch in hand. Because full knowledge of PLC is not required to use ioTouch2, an assembler can adjust machines through ioTouch2. = Easy To Use A device's status appears as a lamp. You can manipulate it by pushing buttons. It's really easy to use. = How To Connect PLC devices ioTouch2 connects PLC devices(*2) by Wi-Fi, so that you can take it with you easily. If your PLC devices support Ethernet, you just need to build a Wi-Fi. Otherwise ioTouch2 can connect them through a Serial-Ethenet converter. "PLC Share" is no longer necessary. *2 ioTouch2 supports most of KEYENCE, MITSUBISHI, YOKOGAWA and OMRON devices. More details to see http://iphone.itosoft.com/iotouch2/spec . ===================================== --- C A U T I O N --- ioTouch2 can switch on/off devices. If you need to interlock devices controlled by PLC, you need to configure that on PLC. If there are some devices of which you are not sure about safety, please set the permission of them readonly and don't use that function. ===================================== ## Key features - Monitor PLC device status - Manipulate PLC devices - Wi-Fi connectivity - Visual lamp indicators - Supports major PLC brands - 30-minute daily communication limit ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | MITSUBISHI | $49.99 | one-time | | KEYENCE | $49.99 | one-time | | YOKOGAWA | $49.99 | one-time | | OMRON | $49.99 | one-time | ## Frequently asked questions about ioTouch2 Lite ### What is ioTouch2 Lite used for? ioTouch2 Lite is used to monitor and manipulate Programmable Logic Controller (PLC) devices easily via Wi-Fi. It allows users to check the status of machinery and make adjustments without needing expert PLC knowledge. ### What are the limitations of ioTouch2 Lite compared to the Pro version? ioTouch2 Lite has a daily communication restriction of 30 minutes with real PLCs. The Pro version does not have this time limit. Additional add-on items are available for specific PLC providers in both versions. ### How does ioTouch2 Lite connect to PLC devices? ioTouch2 Lite connects to PLC devices using Wi-Fi. If your PLC devices support Ethernet, you can connect them by building a Wi-Fi network. For other devices, a Serial-Ethernet converter can be used. ### Which PLC brands does ioTouch2 Lite support? ioTouch2 Lite supports most devices from KEYENCE, MITSUBISHI, YOKOGAWA, and OMRON. More specific compatibility details can be found on the developer's website. ### Is ioTouch2 Lite suitable for beginners in industrial automation? Yes, ioTouch2 Lite is designed to be easy to use, even without full knowledge of PLCs. The device status is shown as a lamp, and manipulation is done by pushing buttons, making it accessible for assemblers adjusting machines. ### What safety precautions should I take when using ioTouch2 Lite? When using ioTouch2 Lite, it is recommended to configure interlocking devices on the PLC itself. If you are unsure about the safety of certain devices, set their permission to read-only and avoid using the switching function. ### How often is ioTouch2 Lite updated? The latest version of ioTouch2 Lite is 2.1.2, which was last updated on September 23, 2024. This indicates the app receives regular updates to maintain compatibility and functionality. ### What is the pricing for ioTouch2 Lite? ioTouch2 Lite is available for free. However, it offers in-app purchases for add-on items that enable connection to specific PLC providers. ## Version history (last 5 releases) ### 2.1.2 — 2024-09-23 Thank you for using this app. The change to this version is below. - Rebuild it with iOS 18 SDK - Now it’s available on the iPad. ### 2.1.1 — 2020-03-27 Fix a bug where shows a comment editing view when pressing the Output or Enabled button in the bit monitor view. ### 2.1 — 2019-06-12 Thank you for using ioTouch2. The change in version 2.1 is as follows. - fix an issue where crashing the app when the device was locked. ### 2.0 — 2018-08-03 Thank you for using ioTouch2 Lite. Changs 2.0 - Improve compatibility for iPhone X - Fixed that the floating point could not be handled due to communication trouble with the PLC. ### 1.7.2 — 2018-04-18 Thank you for using ioTouch2 Lite. Changes version 1.7.2: - Fix an issue where by Omron FINS/TCP it could not connect in some case. ## Apps similar to ioTouch2 Lite | App | Rating | Price | Category | | --- | --- | --- | --- | | [TEAMCAL AI](https://appshunter.io/ios/app/teamcal-ai/id1642352617) | 5.0 (3) | Free | Productivity | | [TELLUS-HMI for iPad](https://appshunter.io/ios/app/tellus-hmi-for-ipad/id1495405197) | — | Free | Productivity | | [Code Zebra Symbols](https://appshunter.io/ios/app/code-zebra-symbols/id1474265866) | 5.0 (3) | $8.99 | Productivity | | [Personal Learning Coach](https://appshunter.io/ios/app/personal-learning-coach/id6503190083) | — | Free | Productivity | | [TDLogix Portal](https://appshunter.io/ios/app/tdlogix-portal/id1611179197) | 5.0 (1) | Free | Productivity | | [Point Load Test](https://appshunter.io/ios/app/point-load-test/id1253606662) | 5.0 (3) | Free | Productivity | ## More apps by ITO SOFT DESIGN Inc. - [ioTouch2 Pro](https://appshunter.io/ios/app/iotouch2-pro/id343247972) - [irPanel Pro](https://appshunter.io/ios/app/irpanel-pro/id348612496) - [irPanel Lite](https://appshunter.io/ios/app/irpanel-lite/id430145945) - [irBoard Lite](https://appshunter.io/ios/app/irboard-lite/id432058811) - [irBoard](https://appshunter.io/ios/app/irboard/id432059914) All apps by ITO SOFT DESIGN Inc.: https://appshunter.io/developer/311313017 ## Related topics [iweppro lite](https://appshunter.io/ios/topics/iweppro-lite) --- *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 2026-07-02.*