cMT Viewer vs SMART Keypad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
cMT Viewer
This application allows for the visual control of HMI hardware and software directly on an iPad. It offers seamless integration with powerful project editor software, enabling intuitive multi-touch gesture operation for data display and trend analysis.
- Multiple iPad clients
- Simultaneous operation of multiple HMI servers
- Intuitive multi-touch gestures
- Fluid and vivid visualization
- Account management for access privileges
- Hot project switching
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Breaking through the architecture of HMI hardware and software, we freed HMI from its traditional combination with LCD panel and touch screen, and perfectly integrated HMI’s visual control into iPad with the powerful EasyBuilder project editor software. Not only do we inherit the advantage of traditional HMI and the motto of “Make Things Easy,” we also encourage infinite innovation in HMI technology and lead HMI into the cloud. FEATURE ● Multiple iPad Clients A cMT-SVR can be operated by three iPads simultaneously, and by Account Management in EasyBuilder, user accounts and access privileges can be managed properly. ● One iPad, Multiple cMT-SVRs An iPad can connect to operate up to 253 cMT-SVRs, and 3 of the connected cMT-SVRs can be set as hot projects for instant switch in operation. ● Break with Tradition Embrace the Trend Through the integration of iPad and EasyBuilder, cMT Viewer, requiring no additional learning, break the public image of traditional HMI operation. By multi-touch-gesture-enabled Trend Display, Data Display, etc., you can immediately experience fluid and vivid visualization as well as the most intuitive HMI operation. Learn more: http://www.weintek.com/global/
SMART Keypad
This application enables the diagnosis and configuration of a Lenze i500 inverter via a WLAN module. It offers features for connecting, diagnosing device status, performing basic commissioning, managing parameters, and controlling the inverter manually. Users can also transfer parameter sets and reset errors.
- Inverter diagnosis and parameterization
- Device connection and search
- Parameter list and management
- Manual inverter control
- Parameter set transfer
- Error reset and device reset
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This app allows the diagnosis and parameterization of a Lenze i500 inverter. A WLAN module on the i500 inverter is required for communication. Supported views and functions: • Connect Device search, Direct connection via IP address, Simulation, GDC file • Diagnosis Dashboard, logbook, fieldbus, digital and analog inputs/outputs, process controller, device information • Basic commissioning via wizard • Parameter list Menu-guided overview of all device parameters • Transfer Up-/Download and e-mailing of parameter sets • Manual control Setpoint setting, start-stop function and reversal of direction of rotation • Optical tracking • Display of the current Wi-Fi network • Search for parameters • Set parameter values • Save the parameter set • Reset the error • Release controller • Inhibit controller • Reset device (PIN, parameter set and logbook) • Automatic and manual updating of device descriptions • Log in/out • Contact to support (mail and telephone)
Screenshots
Verdict
The clearest difference is review sentiment: cMT Viewer at 43% against SMART Keypad's 20%. cMT Viewer also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (12.0 vs 14.2). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
cMT Viewer ships an update every 2 months, SMART Keypad every 8 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.
| Parameter | cMT Viewer | SMART Keypad |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) — better | — |
| Positive reviews | 42.9% of reviews — better | 20.0% of reviews |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 14.2 |
| Further details — not scored | ||
| Size | 67 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Weintek Labs., Inc. | Lenze SE |
Customer experience
cMT Viewer
SMART Keypad
In-app purchases
cMT Viewer
No in-app purchases
SMART Keypad
No in-app purchases
Questions
Is cMT Viewer free?
Is SMART Keypad free?
Do cMT Viewer or SMART Keypad have ads?
Which is updated more often, cMT Viewer or SMART Keypad?
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