The always-on state is set to low-power mode, and color representation is restricted. Samsung recommends that you create a design that uses no more than 15% of available pixels in always-on states.
Depending on the capability of the watch’s display, two different color schemes are available for always-on states: low-bit color and high color.
Low-bit color mode
In low-bit color mode, always-on states use only cyan, magenta, yellow, red, green, blue, and white at full brightness. Grayscales and gradients cannot be used. Images might be pixelated, as low-bit color mode does not support anti-aliasing.
High color mode
The high-color mode has no color limitations, so the corresponding active versions of your watch face can be replicated more closely. However, high-color designs are displayed in low-bit color if a device does not support high color. High-color mode is supported on Gear S3 or newer devices.
Because always-on states consume power at a low rate, the on-pixel ratio (OPR) is limited to a maximum of 15%. OPR is the ratio of the sum of each on-pixel’s RGB values compared to the value when all pixels on the screen are white. The OPR increases when more pixels are on and when the sum of RGB values is higher.
OPR represents the percentage of each pixel’s RGB values. For example, a white pixel has the RGB value of R (255), G (255), and B (255) and an OPR of 100%. A red pixel’s RGB value is R (255), G (0), and B (0) and an OPR of 33.3%. A black pixel has the RGB value of R (0), G (0), and B (0), with an OPR of 0%.
Do not simply lower the brightness level of an active state to create an always-on state. This could degrade the visibility and quality of your work.
You can check the OPR value with always-on states when Settings -> Developer options -> On Pixel Ratio is on. The Developer options screen is hidden by default. To make it visible, open the watch’s Settings menu, select About watch and click the Software version five times.
When the watch uses an always-on state, the watch face regularly moves around the screen by just a few pixels to prevent a burn-in from occurring on the OLED display. Be aware that design elements near the edge of a watch face can be pushed out of the display when this happens. Replace bright colors with black for the background, and avoid applying high brightness and high chroma to a large block of pixels. For an analog watch face, leave the center empty or dark.
Always-on state default screens
The watch provides different default screens for always-on states, according to the watch face type and color mode. If a watch face does not have a corresponding always-on state, the system provides a default one.
Upload to Galaxy Store
When you’re uploading your watch face, you’ll be taken to Seller Portal. If you are not logged in, you will be redirected to the login page first. When you initially register on the website, you’ll be a Free Seller, which only lets you upload apps that are listed as free downloads. Once you switch to Commercial Seller, you can upload paid downloads. Go to Request Commercial Seller Status to find out how to become a Commercial Seller.
You can create watch faces with Galaxy Watch Studio or Tizen Studio for your personal enjoyment. However, you must receive approval from the Galaxy Watch Review Team before you can register your watch faces in Seller Portal and sell them in Galaxy Store.
Step 1. Upload to the Store
Click 1 Click Project > Uploador
Click 2 Click the Upload button.
Step 2. Upload online
In , fill out the necessary information about your watch face and upload it (login is needed).
If you are selling apps for Republic of Korea consumers under Korean law, we strongly recommend that you complete explanations of personal information usage in English and Korean in the app description field when you edit or register your apps in Seller Portal.
In order for us to provide you with our services, we need your permission to access the items described below. You can still enjoy the basic features of our services without granting Optional access permissions.
- Location: To find a connectable nearby device and connect your Watch using Bluetooth.
- Storage: To exchange stored files with your Watch.
Contacts: To use your registered Samsung Account information and provide services that must be synced with your account.
Please check the relevant notice in Seller Portal > Assistance > Notice
For watch faces created with GWS, each of the following privileges is optional:
- To show S-Health data: Sensor
- To show Weather data: Location
Microsoft Windows 10 or later (64-bit), Apple macOS X 10.8 (Mountain Lion) or later
At least dual-core 2 GHz of CPU
At least 2 GB of RAM
At least 1 GB of free disk space
Java SE 8 or 14 (see for more information):
- If you are using Windows and Java SE 8, download the Java Runtime Environment (JRE). 64-bit JRE is required.
- If you are using Windows and Java SE 14, download the Java Development Kit (JDK).
- If you are using macOS and either Java SE 8 or 14, download the Java Development Kit (JDK).
1280×1024 resolution display (higher resolution recommended)
Now in beta
Anyone who’s interested in making watch faces can join this beta program. Help us perfect Galaxy Watch Studio by giving us feedback about its stability and performance.
No experience needed
The interface has been designed to be immediately familiar to anyone who’s used to working with applications like Adobe Photoshop and Illustrator.
Unleash your creativity
Packed with powerful features to bring your ideas to life
Conditional line based component control
Adjust the conditional line of each component for maximum flexibility and customization. For example, you can show the SUNNY background image during the day (06:00 ~ 17:59), then show the MOON background image at night (18:00 ~ 05:59). You can also apply conditions based on battery level and number of steps taken.
Make your designs move with a range of powerful animation features.
Distribute your designs
Galaxy Watch Studio can be used to create watch faces for your own personal enjoyment. However, if you want to sell or distribute your designs in Galaxy Store, you must receive approval from the Galaxy Watch Review Team. See Watch Face Design Review for more information.
Galaxy Watch Studio does not install on macOS
Newer versions of macOS include a feature that allows only trusted software to be run on your system. You may see one or more of the following messages when you try to install GWS on macOS.
If you see this message, you need to confirm that you want to install GWS. Do the following:
Open System Preferences (click on the Apple logo).
Click on Security & Privacy.
From the General tab, under Allow apps downloaded from, click Open Anyway next to the “Installer.pkg was blocked from use because it is not from an identified developer.”
A window displays the message “macOS cannot verify the developer of Installer.pkg. Are you sure you want to open it?” Click Open to install GWS.
If you see one of the messages listed above, you need to configure your system to allow it to install GWS and then confirm that you want to install GWS. Do the following:
Open System Preferences (click on the Apple logo).
Click on Security & Privacy.
From the General tab, under Allow apps downloaded from, select App Store and identified developers.
Install GWS. You will see another message, “Installer.pkg cannot be opened because the developer cannot be verified.” Follow the steps in the section above.
For more information, see Safely open apps on your Mac.
You need to go through the Build process to produce a .tpk file. This is the type of file that you upload to the store.
Step 1. Build
Select Build from the menu bar.
Click 1 Click Project > BuildorClick 2 Click the Build button.
Step 2. Build a .tpk
Save the .tpk file in a folder. Once the build is finished, upload your watch face to the store.
The GWS project name is used to name the .tpk file. Because Seller Portal does not accept filenames that contain spaces, if you have a space in the project name, you must either rename and rebuild your project or remove the space from the .tpk filename (by default, the .tpk file is located in /Users/<user.name>/GearWatchDesigner/workspace).
Click 3 Enter the Author certificate password you registered.
Click 4 Click on the Build button
When you build your project in GWS, the package ID has to be unique, uses the format xxx.xxx.xxx (where xxx is any alphanumeric character), and cannot contain special characters. If any app is already registered in Seller Portal with the same package name, you won’t be allowed to register the watch face. You can change the package ID from Project > Build > Package ID.
If your package name is the same as another seller’s registered app, then ‘Package ID is already used by other seller’ error shows in Seller Portal when you try to upload your binary file.
If the package ID is the same as another registered app of yours, then ‘Package ID is not valid’ error shows.
If you see either of these two messages when trying to upload your binary file to Seller Portal, rename the Package ID in GWS, rebuild your project, and upload the binary file again.
Choose target API version
As of Tizen 4.0, it is required by law to notify the user about personal information used in the watch face and how the user can determine whether or not to allow access to personal information during app launch. A device using Tizen 4.0 or later must generate a separate .tpk file for this purpose. GWS provides an option to generate separate .tpk files for version 3.0 and earlier and version 4.0 or later.
When uploading a watch face to Seller Portal:
Upload a file with _TW4 postfix for devices using Tizen 4.0 or later version.
Upload a file with _TW3 postfix for devices using Tizen 3.0 or earlier version.
To support all devices, upload both files.
Change preview image
You can change the preview image seen when you select a watch face in the watch. We recommend one of the following resolutions: 512 x 512px or 360 x 360px at 96 PPI (pixels per inch). File formats supported are .PNG, .JPG, and .GIF.
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