Qubit Chess: Terms of Use

Android app com.qubitsoftech.qubitchess by QubitSofTech · Effective 29 October 2026

The rules for using Qubit Chess. By using the app you agree to them.

1. The app

QubitSofTech grants you a personal, non-exclusive, non-transferable licence to use Qubit Chess on devices you own or control, for your own non-commercial use, subject to these terms and Google Play's terms.

2. Free, with ads and credits

Qubit Chess is free. It shows ads, and some features (Standard and Deep analysis, and demonstrating a game in the Studio) use credits, which you earn by watching optional videos. Credits have no cash value and can't be bought, sold, transferred, withdrawn, wagered or exchanged for anything. We may change what credits pay for or how they are earned. Credits are stored on your device and are lost if the app's data is deleted.

3. Fair play

Don't use engines, other programs or another person's help during online games, and don't manipulate ratings, for example by losing on purpose. Players flagged by our fair-play checks gain no rating, and we may restrict their online access.

4. Behaviour online

Choose a display name that isn't offensive, misleading or someone else's. Don't harass other players, abuse the server or try to get around its limits.

5. Ads

Don't click ads you aren't interested in, ask others to click them, or use tools that interact with ads automatically. Invalid ad activity can stop ads and credits for everyone, so the app may pause ads on a device that shows such activity.

6. Your content

Games and PGN files you import or create remain yours. You are responsible for having the right to use any game you import, share or turn into a demonstration.

7. Our content

The app, its design, piece sets, boards, puzzles and texts belong to QubitSofTech or its licensors. Open-source components are used under their own licences (see Settings → Open-source licenses).

8. Availability

Online play, the leaderboard and ads depend on servers and networks that may sometimes be unavailable. We may change or end features, and we may update the app.

9. No warranty

The app is provided "as is". Engine analysis and ratings are estimates and may contain mistakes. To the extent the law allows, QubitSofTech isn't liable for indirect or consequential losses, or for lost data, ratings or credits. Nothing in these terms limits rights you have under consumer law that can't be excluded.

10. Changes

We may update these terms. The app will show the new version and its effective date; continuing to use the app means you accept it.

11. Contact

Questions or requests: write to QubitSofTech, a software development company based in India, at support@qubitsoftech.com.