The Thirty Puzzles and Thirty Puzzles Lite applications are built using the Unity 3D engine (https://unity3d.com) which collects certain user data as described in the Unity 3D engine's privacy policy: https://unity3d.com/legal/privacy-policy

The Thirty Puzzles Lite application displays ads from Unity Ads, which is part of the Google Certified Ad Network: https://support.google.com/googleplay/android-developer/answer/9283445?hl=en