IonRow without IonGrid

In Ionic 4 documentation, it says that IonRow is meant to be used with IonGrid but in the official conference app I can see many examples where IonRow is used without IonGrid. Which is correct? When should I use IonGrid and when not?

you should always use ion-row within ion-grid, if not you will get styling issues.

Well, the official conference example app has it another way! I haven’t yet run into issues using it without grid… do you have an example where it causes issues?