BigVoicy: Speech Synthesizer is a high-quality speech synthesizer app developed by AnyBoost.app. It is a free app available for Android devices. This app offers 29 languages and 70 voices, including locales such as Australian English, Brazilian Portuguese, Canadian French, and more. BigVoicy supports the most common audio formats, including .mp3 and .ogg.

One of the best features of BigVoicy is that it doesn't require you to install any TTS engines on your device. Just enter your text, and BigVoicy will do the rest. You can also download and share your audio files, and even get a link to access them on any device. Overall, BigVoicy is an excellent app for anyone who needs a high-quality speech synthesizer with a wide range of language and voice options.