Try signcheck, it even creates a little file on your SD called signcheck.csv to keep for all time.
Not really doing much Wii stuff these days.
ios-wise. I'd just prefer to keep it un-modded in case we need to send it back under warranty or anything as we have only just got it. It's not mine in fact, it' smy sisters so I don't have the same freedom as I would with something that it completely mine!