No instructions, no sync
The interface is simple as claimed. The iCloud sync feature between the OS and iOS did not work at first. The developer provided quick support and after a couple of brief emails, I reset my iCloud account that fixed the issue. The annoying part is that there is no instruction on how to set it up. If you close the OS app window, there is no way to bring back the interface without quitting and relaunching the app. I will love this app if these issues are resolved. It is a great simple no-nonsense app for keeping track of expenses.
brainedge about Oikon - Simple Expense Tracking