Prim Prim is a free lifestyle app developed by Mercialys for Android users. It offers a loyalty program for La Galerie stores that rewards shoppers with purchasing power. With every purchase at La Galerie stores, users accumulate euros that can be converted into Prim' to spend in any La Galerie store without any minimum purchase required. The percentage of euros accumulated varies depending on ongoing promotions, and it can range from 2% to 10%.

Apart from the loyalty program, the app also provides users with access to the latest news about their favorite La Galerie stores, promotional offers, and a list of shops. Additionally, users can participate in activities to receive free vouchers. The interactive map of the center lets users easily navigate their way once they are inside the center.

Overall, Prim Prim is a great app for frequent shoppers at La Galerie stores. It offers an easy way to accumulate purchasing power and stay updated on the latest events and promotions.