It's secure to download the app. Karos SAS is the developer of Karos which is listed among the Travel & Local category. The most recent update was on Oct 12, 2020 and the tool was downloaded and set up by over 100K users.
According to the latest info, this application is rated 4.1 on Google Play. Download the setup package of Karos 8.4 that is free and take a look at users' reviews on Droid Informer. The app is developed for Android 5.0 and higher.