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• Users can now set a default voice to be used in BookFusion Voice which will be used system wide when selected as the TTS engine. Choose which downloaded voice other apps use for each language. • Fixed the Play button and language selection in Android’s Text-to-Speech settings. Sample playback now continues working after leaving and returning to the screen. • Improved support for multilingual Supertonic voices.
Offline neural text-to-speech with 160+ voices in 40+ languages
BookFusion Voice is a neural text-to-speech engine that brings natural-sounding AI voices to your Android device. Once downloaded, voices run completely offline — your text never leaves your device. Choose from two voice families: SUPERTONIC — 10 expressive, premium-quality voices, each able to speak 31 languages from a single download. One shared multilingual model, so you can switch voice or language instantly without downloading anything else. PIPER — a huge catalog of 150+ voices across 40+ languages, each available in low, medium, or high quality so you can balance naturalness against speed for your device. Every voice you download is automatically tested on your device, so you can see how fast it runs and get a heads-up when a voice is too demanding for smooth, gap-free playback — before you rely on it. ** HOW TO GET STARTED ** 1. Open the app and browse the voice catalog 2. Preview any voice with a native-language test sentence 3. Download the voices you like If you use BookFusion, you're done — it detects installed voices automatically, no configuration needed. For other apps, go to Android Settings > Text-to-Speech and select BookFusion Voice as your preferred engine. ** FEATURES ** - Two neural voice families: premium multilingual Supertonic voices and 150+ Piper voices - 40+ languages, with multiple voices per language - 100% offline after download — no internet required for speech synthesis - Low, medium, and high quality tiers for Piper voices - On-device performance testing — see how fast each voice runs on your device, with a clear warning when one is too slow for smooth playback - Voice preview to audition any voice before downloading - Download size shown for every voice - Adjustable speech speed (0.5x to 2.0x) - Works with any app that uses Android text-to-speech: book readers, accessibility tools, TalkBack, navigation, and more - Designed for accessibility, with full screen-reader (TalkBack) labelling throughout BOOKFUSION INTEGRATION Use BookFusion Voice together with the BookFusion eBook reader for the best read-aloud experience. When paired with BookFusion, voices are pre-buffered ahead of time for seamless, gap-free narration — no pauses between paragraphs or pages. Just download a voice here and start listening in BookFusion. PRIVACY All speech synthesis happens locally on your device. Your text is never sent to any server. The app only connects to the internet to fetch the voice catalog and download voice files. SUPPORTED LANGUAGES SUPPORTED LANGUAGES Albanian, Arabic, Basque, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Estonian, Farsi, Finnish, French, Georgian, German, Greek, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kazakh, Korean, Kurdish, Latvian, Lithuanian, Luxembourgish, Malayalam, Nepali, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Telugu, Turkish, Ukrainian, Urdu, Vietnamese, and Welsh. (Language availability varies by voice family.)