Yes - we need hole name and icon - best would be if get both together. What about if you try to layered texts more side by side (different colors or something)? f.ex: Letters App are upper level and You under that and number 2 will be bigger right side those texts.
When those texts are layered that hole sign can be used better in square icon.
Is here any change to send pic what I mean? I did made rough version about what I mean - just sophisticate that and made your version about it... Do you have email?