🔒 Privacy Policy

비트코인계산기 · 2026-09-10
Last updated: 2026-09-10 · Effective: May 11, 2026

Server-provided market analysis, announcements and inquiries are separate from the removed voice AI and chatbot.

Price alerts removed

Price, target-price, sharp-move and kimchi-premium alerts and their settings have been removed. Microphone, voice AI and chatbot features are also unavailable. Calculators and the Boomerang banner remain.

Official announcements remain separate settings. The updated app attempts to disable previous price subscriptions when opened and connected to the server. Existing pushes may continue until server settings are applied or if cancellation fails.

This change does not erase all existing device records or server-held data. Price-alert storage items below describe previous-version data.

External banner link

The banner opens an external website. It does not load an external image or tracking script, or append quantities, portfolios or memos to the link. After navigation, consult that site’s privacy notice for handling of visits, IP addresses and other information.

boomerang.shop

This notice distinguishes device storage from external transmissions. Removing voice and AI does not remove separate price, notification, inquiry or analytics processing.

📊 1. Stored Information (device-internal only)

Device storage may contain current data and older-version records. Consult the separate sections below for external consent, inquiry and analytics processing.

TypeContentsStorage location
⚙️ SettingsDark mode, language and theme. Saved legacy voice preferences do not activate voice features.Device-local
💼 PortfolioHeld coins, quantities, average pricesDevice-local
🔔 AlertsLegacy price-alert, briefing and notification-history data. Price alerts are no longer available.Device-local
📝 Investment memosInvestment memos and journals. Previously dictated text may remain, but new voice input is unavailable.Device-local
📊 Price history24-hour price records (for chart analysis)Device-local
Previously stored: 💬 AI conversation historyRecent AI conversations (temporary session cache)Device-local
✅ Consent records v127Timestamps of terms / age-14+ consentDevice-local
📲 Onboarding statusWhether first-entry guide was completedDevice-local
Previously stored: ⭐ FavoritesFrequently used conversion pairs, unit optionsDevice-local

This update does not delete previously stored device data or data previously sent to external services. Manage device data through reset, individual deletion or the browser’s site-data controls.

🌐 2. Externally Transmitted Data

The data this service sends externally is limited to:

2-1. Price lookup (price API)

Quote requests send symbols and other query information to a provider or proxy; connection information such as IP addresses may be processed. LOUI was removed from the visible picker, which does not mean all historic data or internal quote processing was deleted.

2-2. AI features removed

This update stops AI question submission, AI provider configuration loading and chat-widget execution. Separate price, notification, inquiry and analytics communications may continue as described in the relevant sections.

2-3. PWA updates

2-4. Firebase Realtime Database v135

We use Firebase (Google) for the following two purposes:

2-5. Push notifications v146+

Subscribing to remaining announcements may involve processing push endpoints, chosen topics, subscription/renewal times, device type, language and delivery history. Price, target-price, kimchi-premium alerts and spoken briefings are no longer current features. Previous subscriptions may remain until app cancellation or server changes take effect. Unsubscribing does not mean immediate deletion of all historical records.

2-6. Cloudflare Insights

3. Voice features removed

This update does not use microphone input, speech recognition, speech playback or voice AI. It does not request new microphone permission. Existing browser permission can be revoked in site settings.

🍪 4. Cookies and Tracking

✅ No ad cookies / no cross-site tracking This service does not use advertising cookies, tracking pixels, Google Analytics, or ad networks at all. Firebase is used only for anonymous aggregation without identifiable personal information (see 2-4).

The storage / communication technologies used are:

🔐 5. Security

5-1. Transmission security

5-2. Storage security

5-3. Data deletion

You can delete all data via the following methods:

  1. In-app: "Reset data" in Settings (planned)
  2. Browser: Settings → Privacy → Delete site data
  3. iOS: Settings → Safari → Clear History and Website Data
  4. Android: Chrome Settings → Privacy → Clear browsing data

📦 5-4. Processing Outsourcing Status (Korean Personal Information Protection Act §26) v146+

The operator outsources some processing to the following companies for service delivery. All processors maintain appropriate security levels and are managed safely under processing agreements or terms.

Processor Outsourced task Processed data
Cloudflare, Inc. (USA) CDN, Workers (API backend), KV/D1 storage, Web Analytics IP (hashed), push endpoint, anonymous statistics, analytics data
Google LLC / Firebase (USA) Realtime Database, App Check, Analytics, FCM Push subscription info, anonymous statistics, announcement / news data
Mozilla Push / Apple Push Firefox / Safari push delivery (when those browsers are used) Push endpoint URL, notification payload

※ If processors change or are added, this policy will be updated to notify users.

👤 6. User Rights

Users have the following rights:

Since this service does not retain personal information on a server, users can exercise all rights themselves.

👶 7. Child Protection · Age Verification strengthened in v127+

These measures aim to comply with Korea's "Act on Promotion of Information and Communications Network Utilization and Information Protection", the EU GDPR, and minor-protection laws in each country.

🌍 8. International Users

This service is operated from the Republic of Korea, but is available worldwide.

9. AI features removed

Microphone buttons, recognition, voice commands, speech playback, spoken tutorials, shake-to-speak, the AI assistant and the chat widget have been removed. Previously enabled settings do not reactivate them.

This update stops AI question submission, AI provider configuration loading and chat-widget execution. Separate price, notification, inquiry and analytics communications may continue as described in the relevant sections.

Existing data

This update does not delete previously stored device data or data previously sent to external services. Manage device data through reset, individual deletion or the browser’s site-data controls.

📰 10. Announcement / Event Feed v135

The KSTA announcements / events feed on the main screen receives real-time data, read-only, from Firebase Realtime Database.

🔄 11. Policy Changes

📞 12. Inquiries and Contact

For inquiries about personal information, correction / deletion requests, or rights exercise, please email the above and we will reply within 7 business days.

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