Continue to app

Publisher Description

Arvutaja (= the Estonian word for "the one that computes") is a voice actions app, i.e. it converts a spoken utterance in some natural language to an expression/command in some formal language and then evaluates the formal expression.

Currently supported input languages:

- Estonian

- English

Currently supported expressions and commands:

- measurement unit conversion expression

- currency conversion expression

- arithmetical expression

- alarm clock / timer setting command

- phone number

- Estonian address query (only with Estonian language input)

The expressions/commands are evaluated using an external app, such as

- Google Maps

- Google Search website

- WolframAlpha website

- device's built-in alarm clock app

- device's built-in phone app

The arithmetical and measurement unit conversion expressions are also evaluated by Arvutaja itself.

Arvutaja uses grammar-based speech recognition, i.e. its input languages and commands are explicitly defined by a grammar. The grammars are written using Grammatical Framework (GF). For more information, see the separate Grammars-project at (Arvutaja uses the Action-grammar.)

Arvutaja prompts you to first install the speech recognition app Kõnele, see

Kõnele uses the speech recognition server which has support for grammar-based speech recognition. Note that you can override in the Kõnele settings which grammar is used in Arvutaja, this allows you to use your own grammar with custom voice commands with Arvutaja.

For more information see:

Testing version:

Arvutaja is a free software application from the System Maintenance subcategory, part of the System Utilities category. The app is currently available in English and it was last updated on 2017-09-19. The program can be installed on Android.

Arvutaja (version ) is available for download from our website. Just click the green Download button above to start. Until now the program was downloaded 6 times. We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.

Program Details


Publisher Kaarel Kaljurand
Released Date 2017-09-19
Languages English


Category System Utilities
Subcategory System Maintenance

System requirements

Operating systems android

Download information

File size
Total downloads 6


License model Free
Price N/A

Version History

Here you can find the changelog of Arvutaja since it was posted on our website on 2014-06-14. The latest version is and it was updated on on 2018-03-26. See below the changes in each version:


posted on 2017-09-19

Small fixes


posted on 2016-09-16

- improve compatibility with Android N (split screen mode),- examples are now displayed in the selected input language (before: in the current device language)

version Varies with device

posted on 2013-02-20

Several fixes and updates

Add a review

Tell us your experience with Arvutaja

Our Recommendations


Click stars to rate this APP!

Users Rating:  
  3.0/5     1
Editor Rating:  
Downloads last week: 0
Release Date: 2017-09-19
Publisher: Kaarel Kaljurand
Operating System: android
Type: Free