Wich language was used to create this application pliiiz 🙄🙄🙄🙄🙄🙄🙄🙄

Backend/architecture: PHP (scripting language), Neo4j (database), Nginx (web server)

App: Titanium Appcelerator (cross-platform mobile SDK), JavaScript (used to build Titanium apps and of course across the web).

Let me know if you have any other questions.

I wanna start mobile app development
And i have to now if the languages :
HTML 5 + CSS3 + JAVASCRIPT
Can let you build a mobile app easly

Look into ionic framework too

Thx any other advice

Ionic is good advice. You can definitely build a nice mobile app with it. A good starting point if you're looking to develop an app with JS.

Yes thx you reassured me