Copied from a review by Hiley in the iOS app store (who have the app too, of course)
Just returned from 3 months travelling in Africa and this card CHANGES EVERYTHING. No fees means no more exchanging for cash everywhere; the rate’s the same so use the card! Also, the app tells me what I’ve just spent, in local and home currency, the INSTANT I use the card, so I see exactly what’s just been charged. Instant confidence with every transaction; in Africa!!
I had a problem with a dodgy ATM in Malawi which appeared to charge me but then said ‘transaction cancelled’. I used the support part of the app (at 7pm UK time) and quickly had a cool chap text me back that everything’s groovy and i’ve not been charged. This is the future.