Silmadi Privacy Policy
- App:
- Silmadi (실마디) — formerly Cellumo (셀루모), Android package com.neulstudio.cellumo
- Developer:
- Neul Studio (늘 스튜디오)
- Last updated:
Silmadi is a logic puzzle app where matches serve as clues and answers are settled by deduction. It has no accounts, and your progress and statistics live on your device. Third parties process information for three purposes: anonymous usage statistics, ads, and in-app purchases. This policy explains each, item by item.
1. What we collect
The Silmadi app itself does not collect personal data that identifies you — no name, email address, phone number, or address. There is no sign-up and no login.
There are, however, an app-generated random install identifier and behavioral events (section 3), an advertising identifier and device information processed by Google AdMob (section 4), and purchase information processed by Google Play (section 5). Each purpose and scope is explained in its own section below.
2. Data stored on your device
Your puzzle progress and statistics are stored only in a local database (SQLite) on your device. Whether you own "Play without ads" is also stored only in a local document on your device — no payment method or account information is stored. Your device holds the authoritative copy; Neul Studio cannot access it.
You manage this data yourself. Clearing the app's data in Android settings, or uninstalling the app, removes it from the device. See section 7 for backups.
3. Anonymous usage statistics (PostHog, EU region)
Silmadi sends an app-generated install identifier (a random UUID) and behavioral events — such as screens, tutorial steps, and puzzle progress — to PostHog (EU region). No name, email, location, or advertising identifier is included.
Turning this off in Settings › Analytics stops sending immediately. In the EEA/UK, we send only if you allowed it on the consent screen. Retention is one year.
To request deletion, send the install identifier (the first 8 characters of the diagnostics export file name in Settings) to the email address in the Contact section below.
4. Ads (Google AdMob)
Silmadi uses Google AdMob to show interstitial and rewarded ads. For this, Google processes the advertising identifier and device information.
Buying "Play without ads" (a one-time purchase) removes ads and stops this processing. In the EEA/UK, a consent screen appears on first launch, and you can change your choice anytime in Settings › Privacy options. Google's processing follows the Google Privacy Policy.
5. Purchases (Google Play Billing)
The "Play without ads" purchase is handled by Google Play Billing. Silmadi stores only whether you own it, on your device — it stores no payment or account information.
6. Exporting analytics data (manual)
Silmadi has an "Export analytics data" feature. This is separate from the automatic statistics described in section 3, and it runs only when you start it. It packages the local analytics database on your device (puzzle progress and event records; no personally identifiable information) into a file named silmadi-analytics-*.db and opens the Android share sheet. Where the file goes is your choice.
The app never sends this file on its own, and nothing reaches Neul Studio automatically.
7. Device backup
If Android device backup (backup to your Google Account) is turned on, Silmadi's app data may be backed up. This is an operating-system feature provided by Android, and it follows your device settings, where you can turn it off or manage it.
8. International transfer
The statistics servers in section 3 are in the EU (PostHog Cloud EU). The ad processing in section 4 and the purchase processing in section 5 take place on servers operated by Google.
9. Children
Silmadi is not directed at children. It is made for a general audience.
10. Changes to this policy
When this policy changes, the revised version is published at this same address and the "Last updated" date at the top is updated.
11. Contact
Questions about this policy or about how Silmadi handles personal data can be sent to:
Neul Studio — contact@neul.studio