It's secure to download this application. Mobilist is the developer of the app which can be found in the Social tools category. One Voice App is for users aged 14 and older, it was rated 4.7 on Google Play.
This application has been downloaded and installed by over 50 users and its most recent release is dated Feb 9, 2018. It's free of charge to get the installation package of One Voice App, also, you can check out users' reviews on Droid Informer. The app works fine on Android 4.0 and higher.