I asked chatgpt for you below what he said
Good question — and this is an interesting idea 
Short Answer
No, Kodular (and any App Inventor–based platform) does not currently allow changing the actual app icon dynamically after installation — Android restricts it for security and consistency reasons.
Why You Can’t Do It Directly
The app icon shown on the home screen and launcher is declared in the AndroidManifest.xml and bundled into the APK or AAB file.
Once installed, Android does not allow changing the launcher icon resource unless:
You use multiple launcher activities with different icons and enable/disable them programmatically (using Java or Kotlin code, not Kodular blocks).
Or you reinstall / update the app with a new icon.
Workarounds (Possible Alternatives)
- Dynamic icon inside the app (not launcher icon)
You can display a custom icon or logo inside your app screen that changes remotely:
Store the icon URL in Firebase (as you mentioned).
Use Image component → Image.Picture from the URL.
If Firebase image URL is empty/unavailable, show your default icon from assets.
Example Kodular logic:
When Screen1.Initialize
→ Get value “app_icon_url” from Firebase
When Firebase GotValue
If value ≠ “” then
Set Image1.Picture to value
else
Set Image1.Picture to “default_icon.png”
Works perfectly — you can change this image anytime from Firebase.
- Actual launcher icon change (only via Java Extension)
If you develop a custom AIX extension in Java, you can technically:
Create multiple launcher aliases in AndroidManifest.xml.
Use PackageManager.setComponentEnabledSetting() to enable one and disable another dynamically.
But Kodular doesn’t expose Manifest editing directly — so it requires an extension or a custom-built app (outside Kodular).
This also won’t fetch icons from a URL — the alternate icons still need to be included in the app package.
Conclusion
Goal Possible in Kodular? Method
Change actual launcher icon dynamically 
No Needs native Android code
Change displayed icon inside app UI via Firebase URL Yes Use Image + Firebase.
odular, so don’t ask tricky question with them, Always give you irrelevant suggestion 
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