Proloquo4Text's user interface is localized in the following languages with corresponding voices available for free download within the app:
- Danish
- Dutch
- English
- French
- German
- Italian
- Norwegian
- Spanish
- Swedish
Currently, Proloquo4Text includes default word prediction dictionaries for the following languages:
- Arabic
- Catalan
- Czech
- Danish
- Dutch
- English
- Finnish
- French
- German
- Greek
- Italian
- Norwegian
- Polish
- Portuguese
- Russian
- Spanish
- Swedish
- Turkish
In addition, region-specific voices are available for free download in many languages. The following are included:
- Catalan (Spain)
- Czech (Czech Republic)
- Danish (Denmark)
- Dutch (Belgium)
- Dutch (Netherlands)
- English (Australia)
- English (Canada)
- English (United Kingdom)
- English (United States)
- Finnish (Finland)
- French (Canada)
- French (France)
- French (Switzerland)
- German (Germany)
- German (Switzerland)
- Italian (Italy)
- Norwegian Bokmål (Norway)
- Polish (Poland)
- Portuguese (Brazil)
- Portuguese (Portugal)
- Spanish (American)
- Spanish (Spain)
- Swedish (Sweden)
- Turkish (Turkey)
