Contact
Email support@coinmadang.app with the web address or app version, browser or device details, affected screen, and displayed data time. Never send passwords or API keys.
Missing or delayed values
A metric may show unavailable or delayed because of provider, region, or network conditions. CoinMadang does not turn unknown values into zero or label delayed data as live.
Delete local data
In-app “Reset display mode” restores only the default dark theme, and “Clear watchlist” removes only watchlist entries. To remove all local app data, use Android Settings → Apps → CoinMadang → Storage → Clear data, or uninstall the app. OS backup and restore, advertising identifiers and consent information are also subject to platform and SDK controls. On the web, clear site data and cookies in your browser; change web ad choices in its privacy/cookie settings or My Ad Center. There is no current server account. Contact support@coinmadang.app about access to or deletion of older community materials or support emails. This does not mean those records have already been deleted; applicable records and retention reasons will be checked and explained.
Scope
CoinMadang is an informational web and app service. It does not provide trading, orders, a wallet, deposits, withdrawals, or financial advice.
Mobile rewarded ads and consent
The production Android app uses one rewarded ad format through Google Mobile Ads SDK to unlock calculator results. The SDK may process IP addresses (to estimate general location), ad interactions, diagnostics and identifiers such as advertising ID and app set ID; data is encrypted in transit. The SDK initializes and requests ads only when UMP permits ad requests. Where applicable, change your choice through advertising privacy options in Settings. A reward opens results for the current inputs for 30 minutes; changed inputs lock them again. Closing or cancelling without a reward, no available ad, or network/SDK failure preserves inputs and keeps results locked. Firebase Analytics, Crashlytics, banner, interstitial and app-open ads are not included. Ads may be unavailable during review. Do not include calculator inputs, private keys, recovery phrases or secrets in support requests.