FAQ — Bookverse

The Listen button plays no audio

Bookverse speaks with the text-to-speech voices installed on your device — it does not stream audio from a server. If your device has no voice for the course language (for example Thai), Listen stays silent and the app shows a note under the button.

Android

Open Settings → General management (or System) → Text-to-speech output.
Select Speech Services by Google as the preferred engine. Vendor engines on some phones list languages they cannot actually speak.
Tap the gear next to the engine → Install voice data → download the course language (e.g. ไทย / Thai).
Restart the Bookverse app.

On some phones — especially China-region models without full Google services — Google’s engine may be unavailable or unable to download voice data. In that case install any third-party text-to-speech app that ships the language you’re learning and select it as the preferred engine.

iPhone / iPad

Open Settings → Accessibility → Spoken Content → Voices.
Choose the course language and download a voice.
Restart the Bookverse app.

Web (desktop browser)

The browser uses your operating system’s voices. On macOS add voices under System Settings → Accessibility → Spoken Content → System Voice → Manage Voices; on Windows under Settings → Time & language → Speech. Reload the page afterwards.

Speaking practice says it didn’t hear me

The Speak / Record button uses your device’s speech recognizer. If it keeps answering “didn’t hear any speech”:

Check the microphone permission for Bookverse (or for the browser on web).
Start speaking within a second or two of tapping the button — it stops itself on silence.
On Android the recognizer may not have your course language installed: open the Google app → your profile → Settings → Voice → Offline speech recognition and download the language.
Where the device recognizer can’t handle the language, Bookverse falls back to cloud transcription automatically — that path needs an internet connection.

Audio worked before and then stopped

Force-close and reopen the app. If that doesn’t help, switch the device’s text-to-speech engine to a different one and back — engines occasionally get stuck after system updates.