Faberlic offers a mobile app alongside its website. Both do broadly the same things, and which one suits you depends less on features than on when and where you actually use it.
Where the app wins
Browsing between other things. Ten minutes on a train is enough to look through a new catalogue on a phone and not enough to open a laptop. Since the catalogue reissues roughly every three weeks, this is the most common way people stay current.
Quick lookups. Someone asks you about a product while you are standing in a kitchen. The app is faster than any alternative.
Notifications. Order status reaches you without checking anything.
Where the website wins
Anything involving comparison. Reading two product pages side by side is a large-screen activity.
Longer sessions. Placing a considered order, reading through a series, checking anything detailed.
Reading the compensation plan or other documents. These are not phone-sized.
Most consultants end up using both without deciding to: the app for looking, the site for doing.
Installing it safely
Only from your device's official app store, and check the publisher before installing. Applications impersonating well-known brands appear regularly, and one that asks for your consultant number and password is exactly the problem you would expect.
If an app is not available in your country's store, the website works fine on a phone browser and is the safer option. Never install anything from a link sent in a message.
What this page will not tell you
Which buttons are where, and what the current feature list is. App interfaces change with every update, features differ between countries, and a description written today is wrong by next spring. For what the app currently does, the store listing and Faberlic's own site are accurate; this page cannot be.
The realistic answer
If you use a phone for most things, install it — it lowers the effort of staying current with a catalogue that changes constantly, and that is the habit worth protecting.
If you mostly work at a desk, the website is entirely sufficient and you are not missing anything important.
Either way, the useful discipline is the one from the business section: twenty minutes per catalogue cycle looking at what changed. The device you do it on matters far less than doing it.