Hello Asami,

Yes Splash screen can surely be avoided.

You can set specific splash screen in application properties.

Its a good practice to have a splash screen and customizing a splash screen is up to requirements.

If requirement is to customize then you can customize as well.

Thanks,

Krunal

Hello Asami 

Glad to see that you are focusing on Best Practices. Here is my answers for all your comments - 

In mobile apps, screen transition between modules has a splash screen (first time only). Is this a specification (Common/Splash)?

Splash Screen is not an specification. It is neither any mandatory screen but if you will see any Enterprise or Social Mobile App, the Splash Screen will be included. 

Please look into the Article to see why it is important: https://uxplanet.org/splash-screen-is-more-important-than-you-think-855e78da3c2c 

I want to know whether it can be avoided or not.

Yes, you can defiantly avoid it as Krunal Shared the Approach.  

Or is it better to accommodate with splash screen customization like URL below?

The Answer for this question will depend on your requirements and Scope. I hope the above shared URL will help you to understand if you want to use and how to build the good one! 

Please feel free to ask if you have further question for the same. 

Let me clarify some of the statement.

Splash screen on Outsystems is needed for UX when loading resources, simple example that you can check with browser : if you use PWA as distributable for your mobile, splash screen is where service worker will run to prepare the PWA, you can see this on browser developer screen on network tab.

If you not using splash screen, you can, but blank page will shown on the beginning of the app (because the resource still need to load)

Thanks