Last updated: November 12, 2026
This policy explains what information the QuadraChess app ("Quadra Chess - 4 Player Chess" on Google Play, package com.chess4d) collects, why, and who it is shared with. The app is made by Godwin J (developer "jgnsecrets" on Google Play), India. Questions: mrghostpride@gmail.com.
The player name you type or roll at random. It is sent only when you play online or over Wi-Fi, so the other players in that game can see it. Please don't use your full real name as a nickname.
When you play online, the moves, game state, the game's join code, your nickname and whether you're connected are stored in Google Firebase while the game runs. Each online game is deleted automatically: one hour after it ends, or after two hours without a move.
For online play the app signs in to Firebase anonymously. This creates a random ID for your installation of the app. It is not linked to your name, email or Google account. The same ID is used in our analytics, so that events and crash reports from one installation can be grouped together.
We use PostHog to see which features are used and to find and fix problems. It receives:
PostHog stores this information in the United States.
From version 3.1.0, the free app shows a full-screen ad between some games: never during a game, and none in your first day or first three games. Ads are provided by Google AdMob.
QuadraChess is played by people of all ages, including children, so every ad request is marked as child-directed. This tells Google not to show personalized (interest-based) ads or remarketing and to show only ads suitable for all ages. The app can't read your device's advertising ID.
To deliver ads, measure them and prevent fraud, Google still receives technical information such as your IP address (and the approximate location it implies), device and app details, and how you interact with ads. Google uses this under its own policies: How Google uses information from apps that use its services.
In the European Economic Area, the UK and Switzerland, the app asks for your consent through Google's consent form. You can change your choice at any time in Settings → Ad privacy choices.
"Remove ads" is a one-time purchase made through Google Play. Google handles the payment; we never see your card or payment details. RevenueCat, a purchase management service, receives the purchase record (what was bought and when, and Google's purchase token) together with a random ID for your installation. It uses them to confirm the purchase and restore it if you reinstall the app.
Your settings, unfinished offline games, the counters that decide when an ad may show, and whether you own "Remove ads" are stored on your phone and are not sent anywhere.
We don't sell your information, and we don't share it for any other purpose.
Everything the app sends to Firebase, PostHog, AdMob and RevenueCat is encrypted in transit (HTTPS/TLS). Wi-Fi games travel only over your local network, between the phones in the game.
QuadraChess is suitable for all ages. We don't ask anyone for their real name, email, phone number or age, there are no accounts, and there is no chat. Ads are child-directed, as described above. Analytics use a random ID, never a name or email, and are used only to keep the app working and to improve it.
If you're a parent or guardian and think your child has given us personal information (for example, a real name used as a nickname), contact us and we will delete what we can find.
If you are in the EEA or the UK: we process this information to provide the features you use (online and Wi-Fi games, purchases), for our legitimate interest in keeping the app working and improving it (analytics and crash reports), and with your consent for ads where the law requires it. You can ask to access or delete your information, object to its use, or complain to your local data protection authority.
If this policy changes, we will update the "Last updated" date above. Important changes will also be mentioned in the app's update notes.
Godwin J, India
Email: mrghostpride@gmail.com