Privacy Policy

Effective date: February 15, 2026 · Last updated: July 4, 2026

Filipino Mahjong Online ("the App") is a free-to-play multiplayer Filipino Mahjong game. This policy explains what data the App collects, how it is used, and your rights.

Data We Collect

Player display names. When you create or join a game room, you enter a display name. This name is sent to our game server so other players can identify you during the game.

Display names are ephemeral — they are held in server memory only for the duration of the game room and are automatically discarded when the room closes.
Display names are not stored in any database or log after the game session ends.
Display names are not linked to any identity — the App has no user accounts, no login, and no persistent profile.

Data We Do Not Collect

No email addresses, phone numbers, or contact information
No location data in the mobile apps (the web version may derive approximate location, such as country or city, from your IP address for analytics — see Analytics below)
No advertising identifiers (such as IDFA or Android Advertising ID) — the web version's ads use cookies, not device advertising IDs (see Advertising below)
No financial or payment information (the App is free with no in-app purchases)
No photos, files, or media from your device
No browsing or search history

The list above describes information we collect ourselves. On the web version only, Google's advertising cookies are handled by Google as a third party — see Advertising below.

Analytics

The App (web, iOS, and Android) uses PostHog for usage analytics to help us understand how the game is played and to fix problems. Analytics data includes:

Product interaction events — for example, when a game starts, a round ends, a room is created or joined, or a tutorial lesson is completed
A randomly generated identifier stored locally on your device, used to count returning players. It is not derived from your device hardware, is not an advertising ID, and is not linked to your identity (the App has no accounts)
Device and app information — such as operating system, screen size, app platform (web, iOS, or Android), and language
Error reports — technical details of crashes or errors, to help us fix bugs

We do not send your display name or room codes to analytics.

On the iOS and Android apps, session recording is disabled (we never capture a replay of your screen on mobile) and IP-based location enrichment is turned off, so no location data is derived from mobile analytics. The web version may use session recording with all text inputs masked, and may derive approximate location (country or city) from your IP address.

Analytics data is processed by PostHog, Inc. on our behalf on servers located in the United States. This analytics data is used only for the purposes described above and is never sold or used for advertising.

Advertising

The web version of the App (at filipinomahjongonline.com) displays ads served by Google AdSense. The iOS and Android apps show no ads.

Google and its advertising partners use cookies and similar technologies to serve ads and measure their performance. These may be used to show you ads based on your prior visits to this and other websites.
We do not share your display name, room codes, or gameplay data with advertisers. The ad cookies are set and read by Google under its own policies, not by us.
Ads are labelled as advertising (for example, “Sponsored”) and appear only in the web version of the App.

You can control the ads you see and opt out of personalized advertising:

Manage or turn off ad personalization at Google Ad Settings.
Read how Google uses information from sites that use its services in Google's “partner sites” notice.
Opt out of personalized advertising from many providers at aboutads.info or, in Europe, Your Online Choices.

If you are in the European Economic Area, the United Kingdom, or Switzerland, you will be shown a consent message before any non-essential advertising cookies are used, and you can decline personalized ads. Your choice is saved and can be changed at any time.

Local Storage

The App stores a small amount of data locally on your device:

A session token to enable reconnection if you are temporarily disconnected during a game. It is automatically invalidated when the game room closes and is never transmitted to third parties.
Your display name, remembered on your device for convenience so you don't have to retype it. It stays on your device.
The random analytics identifier described in the Analytics section.

Clearing your browser site data (web) or the app's storage (mobile) removes all of the above, including the analytics identifier.

Data Retention & Deletion

Player display names exist on our game server only in memory for the duration of a game room and are discarded when the room closes.
Analytics events are retained in PostHog for up to 12 months and then deleted.
Deletion requests: you can ask us to delete analytics data associated with your device by emailing [email protected]. Because the App has no accounts, please include the approximate dates you played and your platform (web, iOS, or Android) so we can locate the records.

Voice Chat & Microphone Access

The iOS app does not include voice chat and does not request microphone access.

On platforms where voice chat is available, it is optional. When you enable voice chat:

The App may request access to your device's microphone (for example, the RECORD_AUDIO permission on Android)
Audio is transmitted in real time to other players in the same game room and is not recorded or stored on our servers
You can mute or disable voice chat at any time during gameplay
If you deny microphone access, the rest of the App functions normally — voice chat is entirely optional

Network Communication

The App connects to our game server via encrypted WebSocket (WSS) for real-time gameplay synchronization, and sends analytics events to PostHog as described above. All communication uses HTTPS/TLS encryption.

Data Sharing

We do not sell your personal data. Analytics data is processed by PostHog solely as a service provider acting on our instructions. The web version shows ads through Google AdSense; Google and its partners process ad-related cookie data under their own privacy policies, as described in the Advertising section above. The iOS and Android apps show no ads.

Children's Privacy

The App is a general-audience game and is not directed to children under 13. It contains no user accounts, no text chat, and no social features beyond the in-game display name visible to other players in the same room. We do not knowingly collect personal information from children under 13, and we do not knowingly show them personalized ads. If we learn that we have collected personal information from a child under 13, we will delete it — contact us at the address below.

Changes to This Policy

If we make material changes to this privacy policy, we will update the "Last updated" date above. Continued use of the App after changes constitutes acceptance of the updated policy.

Contact

For privacy questions or concerns, please open an issue at our GitHub repository or email [email protected].