SumDash
Privacy Policy
Effective: October 14, 2026 (previously June 28, 2026)
한국어 · English
YT Lab ("we") operates the mobile game SumDash ("the app") and respects your privacy.
This policy explains what information the app processes and how. The app has no sign-up or login and does not
collect your name, email, phone number, contacts, or precise location.
1. Information We Process
| Item | When | Purpose |
|---|
| Nickname (a 3-letter tag you enter) | When submitting a score to the global ranking | Shown on the leaderboard |
| Game record (score, date) | On ranking submission | Ranking calculation/display |
| Random device identifier (generated by the app) | On first ranking submission | One record per device (anti-duplicate) |
| Country/region (inferred from device locale) | On ranking submission | Country-based ranking |
| Advertising identifier, coarse location, app interaction, diagnostics | When ads are shown (see §3) | Ad serving/measurement, error diagnostics |
| App usage statistics (screens viewed, events such as a run starting and ending, app instance ID, device model, OS version, app version, language, country/region derived from IP, session duration) | While using the app (processed by Google Analytics for Firebase) | Improving the app from aggregate statistics (see §4) |
Ranking submission happens only when you submit a score. Otherwise your records stay on the device.
The app's random identifier is separate from the advertising ID (IDFA/AAID) and is not used to track you across apps.
Country/region is an inferred country code (e.g. KR); no GPS/precise location is collected.
2. Where Data Is Stored
- Submitted ranking data is stored in Google Firebase (Cloud Firestore, region: Seoul, asia-northeast3).
- On-device data (best scores, settings, random identifier) stays on your device only.
- App usage statistics are processed by Google Analytics for Firebase (see §4).
3. Advertising
The app is free and shows ads via Google AdMob. AdMob may collect and use an advertising
identifier, coarse location, and device/usage data to serve, measure, and personalize ads. See the
Google Privacy Policy and
how AdMob uses data.
- iOS: the device advertising ID (IDFA) is used for personalized ads only if you allow it via App Tracking Transparency.
- EU/EEA & UK: a Google UMP consent screen collects your choice; personalized or non-personalized ads are shown accordingly.
- You can reset the advertising ID or opt out of personalized ads anytime in your device settings.
4. Usage analytics (Google Analytics for Firebase)
To improve the app, it uses Google Analytics for Firebase (Google LLC) to produce aggregate usage statistics.
- What is collected - app usage events (screens viewed, progress such as a run starting and ending), the app instance ID (a random identifier generated by the SDK), device model, OS version, app version, language, approximate location (country/region derived from the IP address - the IP address itself is not stored by Google Analytics), and session duration
- Purpose - aggregate statistics such as retention and drop-off points, used only to improve the app. It is not used to identify individuals and is never sold.
- Retention - per the Google Analytics retention settings, event data is kept for up to 14 months and then deleted.
- See the Google Privacy Policy and how Google uses information from sites or apps that use its services.
5. In-App Purchases
The app offers a Remove Ads in-app purchase. Payments are handled by the Apple App Store or Google Play;
we do not collect or store payment information such as card numbers.
6. Third-Party Services
- Google Firebase (Cloud Firestore) — ranking storage
- Google AdMob — ad serving/measurement
- Google Analytics for Firebase — aggregate app usage statistics
- Apple App Store / Google Play — in-app purchase processing
7. Retention & Deletion
Ranking data is retained while the service operates. To delete your record, email us your nickname.
On-device data is removed when you uninstall the app.
Google Analytics event data is deleted automatically after at most 14 months.
8. Children
The app is not primarily directed to children under 13 and does not knowingly collect their personal information.
9. Changes
We may update this policy; changes are posted here with a new effective date.
10. Contact
Privacy questions: contact@ytlab.site