It's very user friendly for any age group, can be used by everyone from kids to parents! I love that it has all of my favorite features in 1 app which makes life easier than having several apps open at once if you are chatting with different people or groups within your family/household etc..
No issues as far as functionality goes but sometimes when there is too much going on (like during holidays) things slow down so have some patience while using this product!! Keep up what ever marketing campaign they do regarding their new updates because these help keep families connected even better. My daughter loves being able connect her friends via video chat through bluelapp- we use our home wifi connection since she doesn't own an actual smartphone yet & also helps us stay organized about who gets online last before bedtime time comes around :).