System requirements
We support the newest versions of:
Android for the Capptions Direct Android App
iOS for the Capptions Direct iOS App
Chrome browser for the Capptions Direct web app
Edge browser for the Capptions Direct web app
Safari browser for the Capptions Direct web app
Firefox browser for the Capptions Direct web app
In reality this means that the before-latest version of the above mentioned OS's is very likely also working without flaws.
As for the hardware, if the OS/browsers are supported by it, it should work. Of course the newer the hardware is, the better performance can be expected in general.