1. Scope and who we are
This Privacy Policy applies to the F2Pool ROI mobile application (the “App”), developed and provided by DCMA Technology Limited (“we”, “us”, or “our”), operating under the DCMA.APP product studio. The App helps Bitcoin miners review F2Pool account performance, rig health, payouts, and return-on-investment scenarios.
2. Information stored on your device
The App stores its settings and cached market snapshot in the platform’s local preferences. This can include the F2Pool user or sub-account name, the F2Pool API secret you enter, revenue target, average miner price, projection window, language and theme choices, ad preference, setup state, sample-data mode, and the last successful market snapshot.
When you use a real account, the App keeps the most recent account data in memory for the current session so it can display the dashboard and preserve the last good view during a refresh failure. The App does not provide a DCMA account, cloud sync, or DCMA-hosted mining database.
3. When information can leave your device
When you connect or refresh a real account, the App sends the F2Pool user name and, when supplied, the API secret in requests directly to F2Pool’s API at api.f2pool.com. Depending on the token and API version, requests retrieve account balances, earnings, worker hashrates and status, hashrate history, and revenue transactions. The App does not send this information through a DCMA server.
The App also requests public market information directly from its configured providers: Blockchain.com for BTC price, difficulty, and network hashrate, with CoinGecko as a BTC-price fallback. These market requests are not intended to include your F2Pool credentials or account name.
If you enable “Support the app with ads” in Settings, the App may request an AdMob banner and may request a DCMA house-ad unit from dcmobileapps.com. A house-ad click may be sent to that service for click measurement. AdMob and other providers may handle device, advertising, or network information under their own privacy policies; review their current notices for details.
4. Device permissions
The Android build requests Internet access so it can reach F2Pool, market-data providers, and optional ad services. The current source does not request camera, photo library, location, contacts, microphone, or notification permission. Internet access allows network requests; it does not by itself mean the App can access files, contacts, or other device content.
5. Advertising, analytics, and tracking
The current source contains no separate product-analytics, sign-in, payment, or crash-reporting service. AdMob is included for optional banner advertising, and the DCMA house-ad endpoint can be used when ads are enabled. Ads are disabled by default, and the App does not make those ad requests while that setting remains off.
Because Google and other advertising providers control parts of their own data handling, we do not describe their collection, retention, or personalised-ad choices as being controlled by this App. Review the provider notices and the advertising controls available on your device.
6. Retention and your choices
You can change or clear the saved account settings in the App’s Settings screen. Disconnecting removes the saved F2Pool user name and API secret from the App’s local preferences; removing the App and its local data also removes locally stored App data. Device backups and operating-system behaviour are controlled by Apple or Google and may follow their own policies.
F2Pool, Blockchain.com, CoinGecko, AdMob, and the DCMA house-ad service receive requests only when the relevant App feature is used. Their retention and deletion practices are controlled by those providers. We cannot delete records held by a provider on your behalf without a provider-specific process, so contact that provider for requests relating to its systems.
7. Changes to this policy
We may update this policy when F2Pool ROI, its providers, or legal requirements change. We will revise the date on this page when we do.
8. Contact
For privacy questions or requests, contact support@dcma.app with the subject line “F2Pool ROI privacy request”.