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Acapela Group Demo
Terms and conditions

The User of this demo undertakes to use the demo in accordance with customs and standard practices. the User shall ensure that the demo will not be used to create prompts which are unlawful, harmful, threatening, abusive, harassing, tortuous, defamatory, vulgar, obscene, libellous, invasive of another's privacy, hateful, or racially, ethnically or otherwise objectionable.


Acapela TTS for Android

Software Development toolkit designed to give a voice to any Android application.

Deliver 24/7 real-time vocal information to your customers

Acapela TTS for Android has been designed to enable developers to easily add a voice to their applications. Breathe life into your interface and content, provide users with the Voice First experience, let your Android applications talk with a wide range of pleasant and smart voices.

Developer benefits

The High Level API written in Java enables developers, with a minimum of code lines, to quickly and easily integrate speech synthesis into their application.

Market apps and services

For navigation, smart toys, virtual assistants, portable Accessibility apps, AAC, SGD, blindness, low vision, visual impairment, talking book players, Braille, BrailleNote, computer aids, reading aids, digital video assistants, video magnifiers, screen readers, braille displays, speech synthesizers, devices for autonomy and much more.

Key benefits


Very natural and pleasant voices
Simple integration of text to speech voices into your Android application, for a natural interface and rich audio content. In over 30 languages and 120 standard voices.


Multiple voice formats & qualities
Colibri Voices (3 to 9 MB/voice), Low Footprint (15-30MB/voice) and High Quality Medium (40-150MB/voice) for embedded text to speech, no internet connection needed.


Multiple Android devices
Acapela TTS for Android has a java library with native libraries compatible with Android versions from Android 2.x to the latest 8.x (ICS and JB) and those to come!


Android market pricing
License royalties are based on a percentage of the selling price of your app, other pricing models like inApp billing etc. are possible too. Let’s talk!


Android audio friendly
Perfectly integrated with Android audio framework, allows users to work effectively with music in the background as it fades away.


Fast and easy integration
The High Level API written in Java enables developers, with a minimum of code lines, to quickly and easily integrate speech synthesis into their application.

Technical Specifications

  • Android support
    from 2.3 to 8.0+.
  • Easy integration
    with a java class interface.
  • Audio output
    22 kHz.
  • Output support
    direct audio (AudioTrack) and audio file (WAV).
  • Text tags
    to modify parameters on the fly.
  • Word positions
  • CPU usage
    from 70 MIPS to 120 MIPS depending on the voice format.
  • Running memory needed
    from 3-4 MB to 7-20 MB depending on the voice format.
  • Storage memory
    2 MB + voice data (from 10 MB to 200MB depending on the voice format).
  • Please contact us for more information.

Pricing info

The Acapela TTS for Android offer consists of two parts:


  • The Software Development kit: comprises a developer license (with libraries, sample code) and support and maintenance service. You pay a yearly fee.


  • The Commercial Licence: When a product/application/service has been developed incorporating our software, a royalties-bearing agreement will worked out. The level of royalties will depend on the number of units, on the voices and on the languages used.


  • TTS for Android
    • TTS for Android
  • 1. I’m not a developer, I am an Android end-user. How can I use your voices on my device for my talking apps?

  • 2. I would like to develop an application with TTS for Android and resell it on Google Play.

  • 3. As a developer, which is the best? Acapela TTS for Android SDK or the Android Text-To-Speech service?