Search the forum you'll find an link for IDA full version 6.8.1 we guess.
Hope the link still works.
I'm using radare2 but still ARM is an problem. Search for hex bytes, dumping is all extremely awesome.
jtool is amazing tool for static analysis & many things. Its like 10 utilities in one. I use it very frequently to undertand the Mach-o file format.
Download from below site all the utility its an must for iOS RE .
One more thing order the book by J which is going to get released soon. It would be worth the money for sure.
Also learn ROP programming its an must for sure once we need to inject our code in mach-o.
Question: If any one has an good link for ROP programming specifically for iOS with example please share.
Note: Its easy to read the slide information but need an example how to assemble gadgets & GadgetChain etc.. etc..