I used Freeplane a lot, not just for mindmapping but also for other uses like lists, outlines and notes. So, it's quite useful for me to having it accessible as much as possible. Currently, the best available option to have Freeplane's file mobile on iPhone and iPad is using iThoughts. It is not perfect and many aspect not translated well between them, but it's usable and good enough for my need for now.
Here is some tips and notes of using iThoughts as "mobile" Freeplane :
- Turn off "Resolve Auto Attributes" under "Export Options" group in iThoughts. This will map auto/blank attributes on iThoughts to defaults to Freeplane which is better than having to deal with confusing translation of Auto/inherited attributes
- iThoughts only know edge color, so every node color (text, background, edge) will all translated (flattened to be more exact) to edge color on iThougts. The bad thing about this is that it's a lossy translation, so when you re-open on Freeplane, all node-related color are back to default except for the edge color
- Icons compatibility is quite limited. Some typical groups and sequences like flags and numbers are in-sync as some punctuation-based icon like question and exclamation icon is in-sync too. So, use icon sparingly and test for compatibility
- Even after yo have established your personal convention you might still see some surprises on maps/nodes. This usually some Auto format issue. Try to reset the format to Auto on iThoughts and/or Default in Freeplane and reapply the needed formatting. This usually get the format in-sync again