Stego – AI Powered Test Authoring Tool



Stego is primarily designed for developers, QA teams, and product managers who desire to increase the quality of their mobile apps. In addition, it is composed of an intuitive design that can be used by people without programming knowledge, so it is convenient to write test scenarios fast. It can be the best solution for QA and development teams who are looking for a more convenient and efficient way to handle the test process automation.

Stego supports Android/iOS native, hybrid and web apps.

  Yes. When creating test scenarios in Stego, the real devices are connected with USB and mirrored at the Stego. Additionally, completed Stego test scenarios can be uploaded to Cloud to be tested on multiple phones.  

No. Stego is a black box testing tool, thus only the binary of the app without the source code needed. If the app’s binary file does not exist, don’t worry! We provide a handy feature to grab a binary from the app store using Package Name or Bundle ID.

Currently, Stego officially supports two languages, English and Korean. Stego can still be used in other languages, but Stego is not optimized for those languages. So if you need, please check with us for additional language support.


Stego can be installed and used on the following desktop/laptop.
Install Platform: Mac PC (M1 Mac, Intel Mac, Big Sur, Monterey, Xcode 12.1)
Minimum Free Space: 2GB
Other Platform:  Coming Soon (Windows, Linux)

Please refer to the Stego installation manual emailed to you. If you have any problems with the installation or have any questions, please contact

The most frequent causes of installation failure are conflicts with the existing Stego version, Xcode version issues, Apple Developer ID-related settings, and other settings issues. As a first step before you consult us, we recommend uninstalling the previously installed Stego and reinstalling it. For additional problems, please contact

No. Stego is using the AI Vision service from, so it is required to be connected to the internet.

Test Device

First, check whether your test device is connected with your Mac/PC via USB cable. If the connection error dialog persists from Stego, 1) Quit Stego, 2) Reboot the test device (most important!), 3) Reconnect the USB cable to Mac/PC, 4) Restart Stego and connect the device. If that didn’t fix your problem, please contact

Yes, Stego can be connected and tested concurrently up to 4 devices. Additionally, using the Cloud, Stego scenario can be tested with unlimited number of devices.

The devices currently supported by Stego are smartphones (iOS, ANDROID). In addition, we plan to support IPTV set-top boxes in the second half of 2022. For other devices, please contact us.

Stego supports all Android devices capable of USB debugging regardless of the country of manufacture.

You can disconnect the device by clicking the [x] button in the Stego’s device list. From the device screen, click the ‘Add’ button to connect a new device. If you still have problems despite trying these methods, please contact us at

You can click or scroll with the mouse as if you are using it directly on the screen of a mirrored device. Additionally, other manipulations are supported from the toolbar on the right that is activated after connection. For details, refer to ‘Operating the device’ in the manual.

Test Scenario

It depends, but it will be blazingly faster than the programming approach. In Stego, test scenario authoring is merely a recording of your simple touch-based gestures on the phone via mirrored screen. In fact, it is enough to select the button/text in the GUI environment and save the corresponding action as Drag-n-Drop. In particular, Stego is an authoring tool in a no-code environment created by mimicking human motion. For authoring a simple test case (i.e login test), beginners take an average of 10 minutes, and experienced users an average of 5 minutes. Please refer to the enclosed user manual for more details on how to write a test scenario.

Yes. In particular, as it is a No-Code-based tool, even beginners can easily write test scenarios quickly.

You can export or import any Stego scenario (.zip format) and share it with other Stego users from your team. For more information, refer to the ‘Export Scenario’ section of the manual.

Stego’s scenario test job can be scheduled at your preference at Furthermore, by linking your CI/CD with the via openapi, you can set the desired date, number, and device of the scenario created with Stego and receive detailed test reports periodically. For more details, please contact

If your Stego test scenario fails, please review the following: 1) Check device connection 2) Check if Stego is connected to internet and AI Vision service is available 3) Check if your login in the scenario is handling the triggered condition (i.e unexpected popup or screen) If the phenomenon simply stops after meeting a specific step, additional conditions (eg, if the next screen loading takes a long time, add a Wait action) may be necessary by looking before and after the corresponding step. In this case, please consider adding a conditional step. For other information, please contact

  Read user manual and other documents by thoroughly. If you have any problems while creating scenarios, or if you are unsure of any part, please contact  

Stego has implemented a technology for AI to imitate how humans see the app with their own eyes and operate buttons on the app screen instead. 1) By doing so, with the help of AI Vision, Stego needs to recognize a specific UI, such as a specific button, which we call UIObject. 2) UIObject refers to a specific UIElement created through AI screen analysis. 3) OCR means UIObject in the form of text 4) OD (Object Detection) is a recommended UIObject selected by AI 5) and finally Relative means UIObject based on a relative value. If you need further explanation of underline technology, please refer to the user manual or contact us.