Futsal Manager doesn't collect or share any data.
No personal data, tracking data or any other type of data is leaving your device at all and so it can't even reach the Internet.
Futsal Manager is made with Godot Engine and it is licensed under the free and libre Open Source AGPL-3.0-or-later license. It doesn't track you and has no third party libraries included. You can find the source code on GitHub and Codeberg.
If you have questions send me a mail at firstname.lastname@example.org.