caQtDM vs GL
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
caQtDM
Read full descriptionHide full description
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.
GL
Read full descriptionHide full description
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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | caQtDM | GL |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 months โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 12.0 โ better |
| Further details โ not scored | ||
| Size | 68 MB | 39 MB |
| Age rating | 4+ | 17+ |
| Developer | Helge Brands | GL Technologies (HK) Limited |
In-app purchases
caQtDM
No in-app purchases
GL
No in-app purchases









