OATH Studio · PieceStorm
PRIVACY
POLICY
TL;DR
PieceStorm is local-first. Your matches, settings, and progress live on your device and are never sent anywhere. The only component that touches the internet is anonymous Firebase analytics. No ads. No accounts. No data sales.
Overview
PieceStorm is a local-first game: your matches, settings, and progress are stored on your device and never sent anywhere. Two Google services are involved: • Google Firebase (analytics) — anonymous usage analytics that help us improve the game. This is the only component that sends data to the internet. • Google Play — processes purchases of optional Founder Pack items. We do not run ads, do not sell data, and do not collect anything we do not need for the above.
What Stays On Your Device
PieceStorm keeps a small amount of local, on-device data so the game remembers your preferences and unfinished matches:
You can delete all of it by clearing the app's data in your OS settings or by uninstalling the app.
Analytics — Google Firebase
The app uses Google Firebase Analytics to understand how the game is used and to fix problems.
- ▸What is collected: anonymous app-usage events (screens opened, features used, match outcomes), a random app-instance ID, and basic device information (device model, OS version, language).
- ▸What is NOT collected: no account or contact information, no precise location, no payment details, and no content you create.
- ▸Who receives it: Google, as a service provider, for the purpose of analytics, under Google's terms of service and data-processing terms. Google may process the data in the United States.
- ▸Retention: analytics events are retained for a limited period per Google's policies (by default, up to two months for GA4 events).
How to limit it: on Android you can reduce ID-based collection by enabling "Limit ad tracking" (Settings → Privacy → Ads), or by uninstalling the app.
Purchases — Google Play
On Android, optional Founder Pack items (relics, characters, themes, boards, bosses) are purchased through Google Play. Payment processing and your payment details are handled by Google under its own policies; we only receive the purchase confirmation (product ID) needed to unlock the item in-app. We do not see, store, or use your payment information.
Children's Privacy
The app is suitable for all ages and is not directed at children under 13. The only data sent to Google is the anonymous analytics described above; no personal information from children is collected for any other purpose.
Data Security
Local match and settings data never leaves your device. Analytics data is transmitted to Google over encrypted connections (TLS). We have no access to raw analytics data beyond the aggregated reports the Firebase console shows.
Your Rights (GDPR / CCPA)
- ▸Access / portability: your local data is stored in standard, readable formats on your device; you can export it by backing up the app data.
- ▸Deletion: uninstalling the app, or clearing app data, deletes your local data. Analytics events expire per the retention period above; you can also request deletion by contacting us (we handle the request with Google, our processor).
- ▸Opt-out: see the Analytics section above.
- ▸Legal basis: analytics is processed on the basis of legitimate interest (improving the product); purchases are processed to provide the service you request.
Changes
If this ever changes (it is not currently planned), we will update this policy and the effective date.
Contact
If you have questions about this privacy policy or how PieceStorm handles data, contact us:
OATH Studio
PieceStorm · Real-Time Chess · Free