Offline Voice Input no longer works on my phone... alternatives?

I have happily used Offline Voice Input for a few months on my Galaxy Note9, but a recent update has caused it to stop working. The app and its widget in my keyboard now claim that my phone's CPU is too old for the current version. I'm not very tech literate, so I've had no joy trying to install an older APK. Is there a suggested alternative for Android 10, for truly-offline speech-to-text?