VoiceOver (iOS) or TalkBack (Android) are both services that are built directly into the phones themselves. As long as VoiceOver is enabled on your phone (instructions here), you won’t have to do anything else to activate any of the Accessibility features inside of TrainerRoad.
As soon as VoiceOver or TalkBack is enabled, the app should automatically start using any Accessibility features we’ve built. You don’t need to toggle anything in our app, just make sure that the voice-over service is on for your mobile!