sharing zoho writer docs with microsoft word and other word processing programs

sharing zoho writer docs with microsoft word and other word processing programs

I'm using Word for Mac and it lets me share documents with mac and PC users.  Will zoho writer be able to read Word docs from PCs and macs, and let me save in a format that can I can send out to the PC and mac world?  The real question is -- can I use zoho with an iphone to work on documents on the fly?  Can it function in any limited but meaningful way as a substitute for a computer on a limited basis?