Comparison

caQtDM vs ZhiHand

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

Head to head
About

caQtDM

Features
Read 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.

About

ZhiHand

This utility app facilitates on-screen task assistance by connecting your iPhone to a paired OpenClaw workspace and device. It allows for input via text, voice, images, and files, with options for screen recording and pointer calibration.

Highlights
  • Pair with OpenClaw workspace
  • Connect ZhiHand Device for control
  • Enable Eye tracking when needed
  • Send various input types
  • Save local screen recordings
  • Calibrate pointer movement
Features
Read full description

ZhiHand connects your iPhone, your paired OpenClaw workspace, and ZhiHand Device so OpenClaw can help with on-screen tasks. Use ZhiHand to: pair with your OpenClaw workspace by QR code or pair link connect ZhiHand Device for click, typing, back, and navigation turn on Eye only when OpenClaw needs to see the screen send text, voice, images, videos, and files as task input save local screen recordings when you explicitly enable recording save calibrate pointer movement on iOS with the built-in Pointer Lab ZhiHand keeps you in control: screen sharing starts from the iOS broadcast picker microphone is only used when you choose Tap to speak camera is only used to scan a pairing QR code you can stop tasks, stop screen sharing, or unpair OpenClaw at any time

Screenshots

caQtDM4 screens
ZhiHand4 screens

Verdict

The call

The clearest difference is update cadence: ZhiHand at every 9 days against caQtDM's every 5 months. On price, ads, in-app purchases and device support 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

caQtDM ships an update every 5 months, ZhiHand every 9 days. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard1 real difference · 8 level
caQtDM versus ZhiHand: the parameters behind the verdict, then further details
ParametercaQtDMZhiHand
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.016
Further details — not scored
Size68 MB3 MB
Age rating4+4+
DeveloperHelge BrandsBeijing Echang Technology Co., Ltd.

In-app purchases

None

caQtDM

No in-app purchases

None

ZhiHand

No in-app purchases

Questions

Is caQtDM free?
caQtDM is free to download, with no in-app purchases.
Is ZhiHand free?
ZhiHand is free to download, with no in-app purchases.
Do caQtDM or ZhiHand have ads?
Neither caQtDM nor ZhiHand shows ads.
Which is updated more often, caQtDM or ZhiHand?
caQtDM ships an update every 5 months, and ZhiHand every 9 days. Most recently, caQtDM was updated on November 6, 2026 and ZhiHand on November 4, 2026.

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