The following are the system requirements for using the Authy app:
| Platform | OS support |
| iOS | iOS 9 or above |
| Android | Android OS 4.1 or above |
| Mac | OS X (MacOS) 10.11 or above* |
| Windows | Desktop and laptops running Windows 7 or above* |
| Linux | See Authy Linux system requirements |
| Chrome | The Chrome App & Extension is no longer supported |
* In Desktop, make sure your firewall allows access to standard HTTP port (HTTPS 443) and to urls https://*.authy.com, https://*.twilio.com, https://kinesis*.amazonaws.com, https://s3*.amazonaws.com
Notice: If you have the Authy app installed on an older unsupported version of iOS or Android, it will continue to work. However, if the Authy app is installed on an older unsupported version of MacOS or Windows, it may stop working entirely. In all cases, you will no longer be able to receive enhancements, bug fixes, and regular security patches. These updates are only released in new versions of the Authy app, which only work on the supported operating systems listed above.