Comparison

caQtDM vs GL

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

Head to head
About

caQtDM

Features
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The EPICS display manager MEDM is a very powerful tool with many features and satisfies most of the needs for synoptic displays. However MEDM is based on MOTIF/Xt and X11, systems/libraries that are getting into age. Moreover applications using those systems are difficult to maintain and to extend. At PSI a new Qt based application was written, reproducing the functionality of MEDM. Moreover a parser was written to convert the MEDM files into Qt files, the resulting displays being an exact reproduction of the MEDM displays. It has to be noticed that the widgets used are not directly epics aware. The idea was to strictly separate the control system from the display part, in order to be able to add other controlsystems if necesssary (which is still the case for our high intensity particle accelerator). An application is never finished and can always be improved and new things can be added. This is therefore also the case for caQtDM. The widgets could be improved, not everything has been finished and bugs will be found. This App is directly build out of the same sources like the linux/mac or windows version with the help of Qt. For using it a http server with the configuration files (network/gateway/environment) and display files is needed.

About

GL

Features
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The GL-S20 Tool App is an application built specifically for GL.iNet hardware devices. It connects and operates your Thread Border Router and Bluetooth gateway, making it easier for you to use it. Features: Configuration Services for Bluetooth Scanning and Reporting and more scanning modes Configure devices' reporting interval, MQTT, DHCP/Static IP, Setting up MQTT servers, OTA firmware upgrades and more. Data Filtering Backup and Restore of Files If you want to learn more about GL-S20, please refer to: https://docs.gl-inet.com/iot/en/thread_board_router/gl-s20/ If you want to learn more about us, please refer to GL-iNet: https://www.gl-inet.com/

Screenshots

caQtDM4 screens
GL4 screens

Verdict

The call

The clearest difference is iOS requirement: GL at 12.0 against caQtDM's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

caQtDM ships an update every 5 months, GL every 4 months. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

Scorecard1 real difference ยท 5 level
caQtDM versus GL: the parameters behind the verdict, then further details
ParametercaQtDMGL
PriceFreeFree
Update frequencyEvery 5 monthsEvery 4 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.012.0 โ€” better
Further details โ€” not scored
Size68 MB39 MB
Age rating4+17+
DeveloperHelge BrandsGL Technologies (HK) Limited

In-app purchases

None

caQtDM

No in-app purchases

None

GL

No in-app purchases

Questions

Is caQtDM free?
caQtDM is free to download, with no in-app purchases.
Is GL free?
GL is free to download, with no in-app purchases.
Do caQtDM or GL have ads?
Neither caQtDM nor GL shows ads.
Which is updated more often, caQtDM or GL?
caQtDM ships an update every 5 months, and GL every 4 months. Most recently, caQtDM was updated on October 12, 2026 and GL on October 13, 2026.

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