Too bad the iPad version of IndexCard has features that this iPhone version does not. Why not a 64bit universal iOS version? The #AppStore should require all apps to include a specific category for delineating between 32bit apps (older version) and 64bit apps (current version).
Too much work to get it to properly sync with Scrivener. It does work and It will sync, but its a pain when Devs dont update their apps. Its kind of lame because many improvements have been made to DropBoxs API in the past year that neither Index Card nor Scrivener take advantage of. They are 2 completely different apps being independently developed by individual developers and each with their own personal intent. Which is why each will be slow to implement if at all any necessary features that would improve user experience. Personally, I think this app was only developed for someones personal need and its doubtful it will ever go beyond this purpose.
SeekerJones about Index Card for iPhone, v3.0