Sync problems one after another. Very unreliable

[As of April, 2015] The current version of Todo for Mac has a sync problem with Todo for iOS when synced over Dropbox or iCloud which is marked as a Known Issue on Appigo support site. This is not the first time. I previously experienced a different iCloud sync issue with these guys which forced me to switch to Dropbox sync. Perhaps they can no longer afford to pay enough attention to paid Todo app (non-subscription) users.

[Update as of Jan, 2016] Now Toodledo sync is broken.

ho7do9 about Todo, v3.0.7