It's safe to download the app. Norges idrettshøgskole designed SKADEFRI that falls into the Sports category. The overall score for the tool is 4.5 on Google Play.
This application has been downloaded and installed by over 10K users and the most recent update was released on Oct 23, 2020. You can get the setup package of SKADEFRI 1.3 free of charge and have a look at users' reviews on Droid Informer. The app works fine on Android 4.0 and higher.