Comparison

cMT Viewer vs SMART Keypad

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

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.

Highlights
  • Inverter diagnosis and parameterization
  • Device connection and search
  • Parameter list and management
  • Manual inverter control
  • Parameter set transfer
  • Error reset and device reset
Read full description

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

cMT Viewer2 screens
SMART Keypad4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
cMT Viewer versus SMART Keypad: the parameters behind the verdict, then further details
ParametercMT ViewerSMART Keypad
PriceFreeFree
Rating4.6 (8 ratings) — better—
Positive reviews42.9% of reviews — better20.0% of reviews
Number of ratings8 — better—
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better14.2
Further details — not scored
Size67 MB90 MB
Age rating4+4+
DeveloperWeintek Labs., Inc.Lenze SE

Customer experience

cMT Viewer

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

SMART Keypad

Written reviews10 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

In-app purchases

None

cMT Viewer

No in-app purchases

None

SMART Keypad

No in-app purchases

Questions

Is cMT Viewer free?
cMT Viewer is free to download, with no in-app purchases.
Is SMART Keypad free?
SMART Keypad is free to download, with no in-app purchases.
Do cMT Viewer or SMART Keypad have ads?
Neither cMT Viewer nor SMART Keypad shows ads.
Which is updated more often, cMT Viewer or SMART Keypad?
cMT Viewer ships an update every 2 months, and SMART Keypad every 8 months. Most recently, cMT Viewer was updated on October 9, 2026 and SMART Keypad on October 7, 2026.

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