ioTouch2 Lite vs splotRF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ioTouch2 Lite
Monitor and control industrial machinery via Wi-Fi. This app simplifies PLC management, allowing a single user to adjust machines and check device status without expert knowledge. It offers a user-friendly interface with visual indicators for device states.
- Monitor PLC device status
- Manipulate PLC devices
- Wi-Fi connectivity
- Visual lamp indicators
- Supports major PLC brands
- 30-minute daily communication limit
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'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. =====================================
splotRF
Visualize and analyze touchstone S-parameter data with interactive plots. Supports multiple file overlays, stability calculations, and various matrix conversions. Export data in vector graphics formats.
- Plot .snp format S-parameter data
- Stability circles and µ/µ' analysis
- Overlay multiple trace data
- View data as a table
- S/Y/Z matrix conversion
- Smith Chart, Polar, and Rectangular plots
- Export to PDF
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Key Features: • plots .snp format s-parameter touchstone data • stability circles for load and source • µ and µ' for load and source stability • interactive data markers • overlay multiple trace data on a single plot • overlay trace data from multiple files • view data as a table list • arbitrary number of ports (.s1p, .s2p, s3p…snp support) • S/Y/Z matrix conversion • mA/RI/dB formatting • interpolation over frequency • exports vector graphics to .pdf • plotting display properties and configuration are saved within file comments • automated grid layout • Smith Chart, Polar and Rectangular plots • reads and plots .zip archives containing s-parameter data
Screenshots
Verdict
The clearest difference is in-app purchases: splotRF at none against ioTouch2 Lite's 4. splotRF also leads on update cadence (every 10 days vs every 7 months). ioTouch2 Lite's advantage is iOS requirement (13.0 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ioTouch2 Lite sells 4 one-off in-app purchases. splotRF asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for ioTouch2 Lite against 5.0 for splotRF. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
ioTouch2 Lite ships an update every 7 months, splotRF every 10 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.
| Parameter | ioTouch2 Lite | splotRF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 7 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | ITO SOFT DESIGN Inc. | DirectRF |
Customer experience
ioTouch2 Lite
splotRF
In-app purchases
ioTouch2 Lite
- MITSUBISHI$49.99
- KEYENCE$49.99
- YOKOGAWA$49.99
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- OMRON$49.99
splotRF
No in-app purchases









