Needs a couple improvements

I like this app a lot so far. Ive been able to mark many things I plan to visit on my upcoming trip to London. My one problem so far is that it appears you cannot at custom points of interest you the personalized section. For example, the Chancery St Silver Vaults are not in the guide and Id like to be able to add them to my places to visit. If there is a way to to this, Ive been completely unable to find it.
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Now using in London. Great except gps only works when on wifi. Good for not looking like a total tourist!!

Cantfoldmaps about London Travel Guide Offline