An unintentional one it would seem. Had no idea. Thanks for highlighting this.

Just a heads up. There is no way to export from authy. So if you ever want to switch apps for whatever reason, lets say they were bought by big evil corp., then you would have to go and regenerate all your keys. Where as a good app would let you export and import from anywhere

Even better obtanium installs direct from the Devs host. You could use fdroid to find the homepage/where they host and add it to obtanium