Slacken — Privacy Policy

Effective date: 27 September 2026

Slacken (“we”, “us”, “the app”) is an iOS puzzle game published by Jinyang Wang. This policy explains what data the app collects, why, and who it is shared with. It is intentionally short because Slacken is intentionally minimal: there is no account system, no analytics SDK, no crash-reporting SDK, and no social or networking features.

Data we collect ourselves

None. Slacken does not operate any servers that store personal data. Your progress (current level, hint balance, completed-level set, preferences) is persisted only on your device via Apple's standard UserDefaults storage and is removed when you uninstall the app.

Data collected by third-party services

Slacken integrates three Apple-platform or Apple-mediated services and one third-party advertising SDK. Each is listed below with what it collects and why.

Google AdMob (advertising)

We use Google's AdMob SDK to show interstitial and opt-in rewarded ads. AdMob may collect:

• Advertising identifier (IDFA) — only if you grant tracking permission via Apple's App Tracking Transparency prompt. If you decline, AdMob serves contextual (non-personalised) ads and does not use the IDFA.
• Coarse location — an approximate location (for example, city or region) that Google derives from your device's IP address. Slacken never requests access to your device's location services.
• Advertising and ad-interaction data — which ads were shown, and ad-impression / click events used by Google to serve and measure ads, bill advertisers, and prevent fraud.
• Diagnostics — SDK crash and performance data (such as device model, OS version, and ad load latency) used by Google to keep the ads SDK working.

If you are in the European Economic Area, the UK, or Switzerland, Slacken shows Google's consent form before any ads are requested, and you can change your choice at any time from Settings → Privacy Options inside the app.

For full details see Google's privacy policy and the AdMob data-disclosure notice.

You can revoke tracking permission at any time in Settings → Privacy & Security → Tracking on your device.

Apple StoreKit (in-app purchases and subscriptions)

When you buy a hint pack or start an ad-free subscription, Apple processes the transaction. We receive a signed receipt indicating which product was bought and whether the subscription is still active. We do not receive your name, email address, billing address, or payment instrument. Apple's handling of this data is governed by Apple's privacy policy.

Apple App Tracking Transparency

Required by iOS before any third-party SDK may access the IDFA. Apple controls the prompt and your answer; we only receive the result (authorised / denied / restricted / not determined).

Apple App Store Connect (crash reports)

If you opt in to share analytics with app developers (Settings → Privacy & Security → Analytics & Improvements → Share With App Developers), Apple may share aggregated crash logs with us through App Store Connect. These logs contain no personal data; they help us fix bugs that affect real devices. You can opt out at any time in the same Settings screen.

What we do not collect

• No account creation, login, or email capture.
• No analytics SDK (no Firebase, Amplitude, Mixpanel, etc.).
• No third-party crash-reporting SDK (no Sentry, Crashlytics, etc.).
• No access to location services (GPS), contacts, photos, microphone, or camera.
• No social-network integrations.

Children

Slacken is rated 4+ but is not directed at children under 13 and is not enrolled in the Apple Kids Category. We do not knowingly collect personal data from children. If you believe a child has provided personal data through one of the third-party services above, contact us and we will work with that provider to address it.

Your rights

Because we do not store personal data on our own servers, the standard GDPR / CCPA rights to access, correct, export, or delete data are satisfied locally:

• Access / export: all data the app holds about you lives in your device's UserDefaults and Apple-mediated subscription history. iOS Settings shows your subscription status; the app shows your level/hint state in the Settings and HUD screens.
• Delete: uninstalling Slacken removes all locally-stored data. Subscription receipts are retained by Apple under its own privacy policy.

For data held by Google AdMob, see Google's privacy request form.

Changes to this policy

We will update the effective date at the top of this page whenever the policy changes. Material changes will additionally be flagged in the App Store “What's New” copy for the release in which they take effect.

Contact

Privacy questions and requests: jinyang.wang27@outlook.com.