With Wolf Toss we tried to deal with them manually, but it was extremely difficult, and took a lot of time. Not to mention iOS has few tools for investigating crashes. At least with Android you can ask the user for a log.
Due to our experience with Wolf Toss, Crittercism is now built in to Moai, and you can sign up for an account from your Moai dashboard. It automatically reports and analyzes iOS and Android crashes per version. We highly recommend it - we got our Android crash rate down under 1% using it.http://getmoai.com/partner-services/crittercism.html