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Through the magic of Samsung Galaxy Themes, we present a powerful overlay management tool that works with overlays from multiple sources.

An overlay is an Android package that holds resource replacements for existing packages like Gmail, Instagram, Settings or SystemUI.

This means that you could have overlays found from your favorite themes on Substratum that themes third party apps, or any other overlay found online that would for example, change the location of your clock in the status bar or remove all the icons from your lock screen!

With this app, people are able to theme most, if not all apps on their device. They are no longer limited to just having a theme for system apps like a typical Samsung themes provide, but rather a theme to make Instagram, Facebook, WhatsApp, WeChat, Gmail, Snapchat, or any other app pretty!

This app supports overlays from:

  • Substratum Lite
  • Your local storage
  • Other third party apps

This app supports any Samsung device running official OneUI Pie, Q software that has Galaxy Themes preinstalled.

Media coverage: XDA Portal and Forums

Themes are one of the most popular mods for Android. There was a nice year of theming peace with Android 8. Since Android 9, non-root themes have been almost impossible. That’s changing for Samsung users with Synergy. Synergy allows for Substratum themes on One UI.

Extensive list of APIs used

-   Sharing files and binaries between apps securely, allowing overlays to be opened directly from any source into Synergy
-   On-device APK compilation, signing, packaging and installation of a bigger Theme APK on Samsung devices
-   Advance use of RecyclerViews, Adapters and Models
-   Security optimizations to prevent intrusion of dangerous overlays
-   In-app caching of overlay files allowing for multiple overlay versions installed
-   Dynamic support for hijacking of Samsung themes